
Lunar Meteorite
Northwest Africa 7834, 7948, 8306, 10149,
10172, 10203, 10272, 10253, 10258, 10263, 10291, 10317, 10376, 10546, 10599,
10644, 10782, 10810, 10989, 11109, 11185, 11249, 11563, Galb Inal, & [unnamed 93]
(paired stones)
northwestern
Africa, probably Mauritania


NWA
7834
(photo
credit: Rachid Chaoui)
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NWA
7948
(photo
credit: Rachid Chaoui)
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NWA
8306
(photo
credit: Said Haddany)
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Sawn
slices of NWA 8306
(photo
credit: Darryl Pitt)
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Two
views of Northwest Africa 10149
(photo
credit: Mohamed Aid)
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Another
side of NWA 10149
(photo
credit: Darryl Pitt)
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The
320-gram stone of Northwest Africa 10172
(photo
credit: Mohammed Hmani)
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Sawn
face of the 328-gram stone of NWA 10172
(photo
credit: Mohammed Hmani)
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Four
of the NWA 10203 stones
(photo
credit: Rob Wesel)
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Sawn
faces of the NWA 10203 stones
(photo
credit: Rob Wesel)
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Sawn
face of another NWA 10203 stone
(photo
credit: Edwin Thompson)
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Northwest
Africa 10272
(photo
credit: Fabien Kuntz)
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Northwest
Africa 10291. This one is more vesicular than the others.
(photo
credit: Fabien Kuntz)
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One
of the NWA 10253 stones
(photo
credit: Darryl Pitt)
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A
slice of one of the NWA 10253 stones
(photo
credit: Steve Arnold)
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The
2 stones of NWA 10263
(photo
credit: Rachid Chaoui)
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Photomicrograph
of a thin section of NWA 10317
(photo
credit: Addi Bischoff)
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Sawn
face of Northwest Africa 10376
(photo
credit: Philippe Schmitt-Kopplin)
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A
slice of NWA 10546
(photo
credit: Pierre-Marie Pelé)
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Sawn
faces of Northwest Africa 10599
(photo
credit: Carl Agee)
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Two
faces of a saw cut through Northwest Africa 10644. Click on image for
enlargement.
(photo
credit: Mendy Ouzillou)
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Two
sides of a slice of Northwest Africa 10782. Click on image for enlargement.
(photo
credit: Luc Labenne)
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Northwest
Africa 11109. Click on image for
enlargement.
(photo
credit: Weibiao Hsu)
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The
four stones of Northwest Africa 11185
(photo
credit: Ben Hoefnagels)
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Northwest
Africa 11249
(photo credit: Ben Hoefnagels)
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Galb
Inal and a slice thereof
(photo
credit: unknown)
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Lab
samples of NWA 7834
(photo
credit: Randy Korotev)
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Lab
samples of NWA 7948
(photo
credit: Randy Korotev)
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Lab
samples of NWA 8306. Click on image for enlargement.
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10149
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10172
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10203. Click on image for enlargement. Thanks to Rob Wesel
for the sample.
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10253. Click on image for enlargement. Thanks to Carl Agee
for the sample.
(photo
credit: Randy Korotev)
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Two
sides of a slice of NWA 10258. Thanks to Steve Arnold for the sample.
(photo
credit: Randy Korotev)
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Another
lab sample of NWA 10258. Thanks to Carl Agee for the sample.
(photo
credit: Randy Korotev)
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Two
views of chips of NWA 10263
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10272
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10291
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10317. Thanks to Stephan Decker for the sample.
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10376. Thanks to Philippe Schmitt-Kopplin for the
sample.
(photo
credit: Randy Korotev)
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Two
sides of lab sample of Northwest Africa 10599. Thanks to Frank Carroll for
the sample.
(photo
credit: Randy Korotev)
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Lab
sample of NWA 10546
(photo
credit: Randy Korotev)
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Two
sides of lab sample of NWA 10644. Thanks to Mendy Ouzillou
for the sample.
(photo
credit: Randy Korotev)
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A
different slice of NWA 10782. Click on image for enlargement. Thanks to Luc
Labenne for the sample.
(photo
credit: Randy Korotev)
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Two
sides of a slice of NWA 10810 Thanks to Anthony Love for the sample.
(photo
credit: Randy Korotev)
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Two
sides of lab sample of NWA 10989. Click on image for enlargement. Thanks to
Mahesh Anand and Helen Ashcroft for the sample.
(photo
credit: Randy Korotev)
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Lab
sample of NWA 11109. Thanks to
Weibiao Hsu for the sample.
(photo
credit: Randy Korotev)
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Chips
of unnamed 93
(photo
credit: Randy Korotev)
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Lab
sample of Galb Inal. Thanks to Albert Jambon for
the sample.
(photo
credit: Randy Korotev)
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from
The Meteoritical Bulletin, No. 102
Northwest
Africa 7834
(Northwest
Africa)
Purchased: 2013 February
Mass: 905 g
Classification:
Lunar meteorite (feldspathic breccia)
History:
Purchased jointly by Darryl Pitt and David Gheesling in February 2013 from
a dealer in Zagora, Morocco.
Petrography: (A.
Irving and S. Kuehner, UWS)
Breccia consisting of numerous mineral fragments and rare ophitic-textured
mare basalt clasts in a vesicular, glassy matrix. Minerals are anorthite,
olivine, unexsolved pigeonite, subcalcic augite,
exsolved pigeonite, Ti-bearing chromite, Cr-bearing ulvöspinel, ilmenite,
troilite, minor silica polymorph and tiny shred-like grains of kamacite.
Geochemistry:
Olivine (Fa32.3, FeO/MnO = 93; Fa92.9, FeO/MnO = 83),
pigeonite (Fs28.8-35.4Wo9.9-5.7; FeO/MnO = 52-56),
subcalcic augite (Fs18.0Wo37.9; FeO/MnO = 46). Bulk
composition (R. Korotev, WUSL):
INAA of subsamples gave mean abundances of FeO 12.9 wt.%, and (in ppm) Sc
25, La 6.4, Sm 3.1, Eu 0.81, Yb 2.3, Th 0.9.
Classification:
Lunar (mingled regolithic breccia).
Specimens:
20.2 g are at UWB.
The remainder is with the owners.
|
from
The Meteoritical Bulletin, No. 102
Northwest
Africa 7948
(Northwest
Africa)
Purchased: 2013 April
Mass: 59.8 g
Classification:
Lunar meteorite (feldspathic breccia)
History: Purchased
by Eric Twelker in April 2013 from a dealer in Zagora, Morocco.
Petrography: (A.
Irving and S. Kuehner, UWS)
Fresh specimen composed of angular clasts (some lithic clasts up to 1.2 cm
across, but mostly mineral fragments) in a finer grained, dark matrix.
Minerals present are anorthite, olivine, pigeonite, subcalcic augite,
Ti-chromite, troilite, rare silica polymorph and a shred-like grain of
kamacite. A thin vesicular, glassy shock vein was found.
Geochemistry:
Olivine (Fa37.8-61.2; FeO/MnO = 90-107), pigeonite (Fs27.1-28.1Wo13.3-11.0;
FeO/MnO = 56-58), subcalcic augite (Fs17.1-22.3Wo35.9-29.9;
FeO/MnO = 41-53), ferroan subcalcic augite (Fs44.0Wo39.4;
FeO/MnO = 74), anorthite (An90.4-92.0Or0.3-0.4). Bulk
composition (R. Korotev, WUSL):
INAA of subsamples gave mean abundances of FeO 8.8 wt.%, and (in ppm) Sc
16, La 6.5, Sm 3.1, Eu 0.92, Yb 2.2, Th 1.0.
Classification:
Lunar (mingled regolithic breccia).
Specimens:
12.2 g are at UWB.
The remainder is with Twelker.
|
from
The Meteoritical Bulletin, No. 103
Northwest
Africa 8306
(Northwest
Africa)
Purchased: 2014 February
Mass: 1389 g
Classification:
Lunar meteorite (feldspathic breccia)
History: Puchased by Darryl Pitt in February 2013 from a
Moroccan dealer at the Tucson Gem and Mineral Show.
Physical
characteristics: Single stone (1389 g) lacking fusion
crust and composed of pale gray, pale yellow and white clasts in a very
dark gray matrix.
Petrography: (A.
Irving and S. Kuehner, UWS)
Breccia composed of angular clasts in a partly glassy matrix containing
trapped microbubbles. Minerals are olivine, pigeonite, fayalite, anorthite,
silica (as separate clasts), hedenbergite, Ti-poor chromite, Ti-rich
chromite, ilmenite, and minor exsolved pigeonite, baddeleyite, kamacite and
barite. One fine grained, quenched-textured basaltic clast was found.
Geochemistry:
Olivine (Fa26.5-36.0; FeO/MnO = 102-116, N = 3), pigeonite (Fs19.8-24.0Wo19.9-17.0;
FeO/MnO = 47-56; Fs28.8Wo6.5; FeO/MnO = 55), fayalite
(Fa72.6; FeO/MnO = 104). Bulk composition (R. Korotev, WUSL) INAA
of subsamples gave the following mean abundances (in wt.%) FeO 8.9, Na2O
0.41; (in ppm) Sc 17.1, Ni 230, La 7.3, Sm 3.30, Eu 0.93, Yb 2.30, Lu
0.317, Hf 2.4, Th 1.0.
Classification:
Lunar (feldspathic regolithic breccia).
Specimens:
A 20.2 g specimen with one polished surface is at UWB. The
main mass is held by DPitt.
|
from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10149
Northwestern
Africa
Purchased: 2015 April
Mass: 1815 g
Lunar meteorite (feldspathic breccia)
History:
Purchased by Darryl Pitt in April 2015 from a dealer in Ouarzazate,
Morocco.
Petrography: (A.
Irving and S. Kuehner, UWS)
Fragmental breccia composed of mineral clasts of anorthite, olivine,
pigeonite, subcalcic augite, augite, fayalite, silica polymorph, exsolved
pigeonite, Al-Ti-chromite and Ti-rich chromite, along with sparse glass
fragments, in a finer-grained matrix.
Geochemistry:
Olivine (Fa35.1; Fa87.0-89.9; FeO/MnO = 91-93, N =
3), pigeonite (Fs41.0Wo7.3; Fs58.3Wo21.3;
Fs21.8Wo24.8; FeO/MnO =57-67, N = 3), augite (Fs14.5Wo40.2,
FeO/MnO = 45).
Classification:
Lunar (feldspathic breccia).
Specimens: 20.1 g
included a polished endcut at UWB. The
remainder is held by DPitt.
|
from The Meteoritical Bulletin, No. 104
Northwest
Africa 10172
Northwestern
Africa
Purchased: 2015 April
Mass: 788 g
Lunar meteorite (feldspathic breccia)
History:
Purchased by Ali and Mohammed Hmani in April
2015, reportedly from Mauritania.
Physical
characteristics: Several identically appearing pieces,
320, 328, and 140 g in several smaller pieces. Irregular exterior. A saw
cut reveals a breccia with numerous fragmental feldspathic clasts set in a
dark-gray groundmass.
Petrography: (C.
Agee, UNM)
This meteorite is mixture of a fine-grained cataclastic
domains, large fragmental plagioclase and pyroxene crystals, smaller
olivine fragments, symplectites, and shock melt
veins. Accessory Fe-metal, silica, ilmenite, and chromite were observed.
Geochemistry: (C.
Agee and N. Muttik, UNM) olivine Fa36.8±5.3,
Fe/Mn=98±5, n=7; pigeonite Fs39.2±12.0Wo13.9±5.1,
Fe/Mn=61±5, n=10; augite Fs35.8±16.2Wo36.0±5.1,
Fe/Mn=66±9, n=4; plagioclase An93.3±3.7Ab6.1±3.4Or0.5±0.5,
n=9; Shock melt (10 µm defocused electron beam, proxy for bulk meteorite
composition): SiO2=45.0±1.5, TiO2=0.34±0.14, Al2O3=24.9±6.0,
Cr2O3=0.17±0.12, MgO=7.8±3.9, FeO=7.7±4.1,
MnO=0.11±0.06, CaO=14.2±2.5, NiO=0.01±0.02, Na2O=0.43±0.14,
K2O=0.10±0.02 (all wt%), Fe/Mn=75±17,
Mg#=64±5, MgO+FeO=15.6±7.8 (wt%),
n=23.
Classification:
Lunar (feldspathic breccia).
Specimens: 20.6 g
including a probe mount on deposit at UNM; Ali and Mohammed Hmani
hold the main mass.
|
from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10203
Northwestern
Africa
Purchased: 2015
Mass: 3300 g
Lunar meteorite
History:
Purchased by Aziz Habibi in 2015; reportedly found in near the border
between Mauritania and Mali.
Physical
characteristics: Twenty-seven identically appearing
pieces reportedly found together. Irregular exterior, no fusion crust. A
saw cut reveals a polymict breccia with numerous fragmental light and dark
clasts.
Petrography: (C.
Agee, UNM)
This polymict breccia has at least four distinct lithologies. 1)
unbrecciated olivine gabbro with zoned clinopyroxene (~75%), acicular,
plumose plagioclase (~15%), olivine (~5%), and minor titanomagnetite; 2)
fragmental anorthositic gabbro breccia with ~75% plagioclase; 3) fragmental
gabbroic breccia with approximately equal proportions of plagioclase,
pyroxene and olivine; 4) shock melt veins and pools, some of which are
vesicular. Accessory FeNi-metal, silica, ilmenite, troilite, chromite, and
phosphate were observed in the fragmental breccias.
Geochemistry: (C.
Agee and N. Muttik, UNM) Olivine gabbro: olivine
Fa52.9.8±7.1, Fe/Mn=100±12, n=6; clinopyroxene Fs31.1±15.8Wo22.1±7.6,
Fe/Mn=41±10, n=7; plagioclase An89.9±3.8Ab8.9±3.4Or1.1±0.8,
n=3; anorthositic gabbro breccia: olivine Fa30.6±3.0,
Fe/Mn=104±7, n=21; clinopyroxene Fs39.4±15.8Wo21.7±10.9,
Fe/Mn=66±11, n=21; plagioclase An96.2±0.8Ab3.5±0.8Or0.2±0.1,
n=6; gabbroic breccia: olivine Fa40.3±2.9, Fe/Mn=98±5, n=6;
clinopyroxene Fs35.4±14.3Wo23.3±10.0, Fe/Mn=63±10,
n=9; plagioclase An93.0±1.6Ab6.6±1.6Or0.4±0.1,
n=4; Shock melt (10 µm defocused electron beam, proxy for bulk meteorite
composition): SiO2=45.1±2.0, TiO2=0.54±0.38, Al2O3=24.3±6.2,
Cr2O3=0.21±0.19, MgO=6.5±2.9, FeO=8.2±3.8,
MnO=0.11±0.05, CaO=14.9±1.9, NiO=0.03±0.07, Na2O=0.49±0.13,
K2O=0.10±0.03 (all wt%), n=40.
Classification:
Lunar (polymict breccia).
Specimens: 24 g
including a probe mount on deposit at UNM; Aziz Habibi holds the main mass.
|
from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10253
Northwestern
Africa
Purchased: 2015
Mass: 6674.1 g
Lunar meteorite
History:
Purchased by Darryl Pitt from a Moroccan meteorite dealer, reportedly found
in Mauritania near the Algerian border.
Physical
characteristics: Weathered irregular exterior. Saw cuts
reveal a fragmental breccia with numerous feldspathic and mafic clasts set
in a gray groundmass.
Petrography: (C.
Agee, UNM)
This meteorite is a very heterogeneous polymict breccia consisting of
numerous microgabbro clasts, shock melt pools and
veins, fragmental plagioclase, pyroxene, and olivine. Accessory Fe-oxide,
troilite, Ti-chromite, ilmenite, and silica were observed. Thin calcite
weathering veins are present.
Geochemistry: (C.
Agee and N. Muttik, UNM) olivine Fa38.3±2.7,
Fe/Mn=102±5, n=14; pigeonite Fs39.9±14.7Wo12.7±5.5,
Fe/Mn=63±9, n=14; augite Fs42.7±14.2Wo27.0±7.9,
Fe/Mn=69±11, n=10; anorthite plagioclase An95.3±1.8Ab4.4±1.7Or0.2±0.1,
n=6; labradorite plagioclase An55.5Ab43.2Or1.3,
n=1; Shock melt (10 µm defocused electron beam, proxy for bulk meteorite
composition): SiO2=46.1±1.6, TiO2=0.63±0.46, Al2O3=23.1±4.8,
Cr2O3=0.16±0.09, MgO=6.8±3.5, FeO=7.1±3.2,
MnO=0.09±0.05, CaO=14.0±2.0, NiO=0.03±0.03, Na2O=0.55±0.21,
K2O=0.12±0.08 (all wt%), Fe/Mn=81±23,
Mg#=61±8, MgO+FeO=13.9±6.0 (wt%),
n=31.
Classification:
Lunar feldspathic breccia
Specimens: 32.5 g
including a probe mount on deposit at UNM, DPitt holds the
main mass.
|
from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10258
Northwestern
Africa
Purchased: 2015
Mass: 58 g
Lunar meteorite
History:
Purchased by Steve Arnold from Morocco, 2015.
Physical
characteristics: Single stone, dark irregular surface, no
fusion crust. A saw cut reveals numerous light-colored clasts set in a dark
groundmass.
Petrography: (C.
Agee, UNM)
This meteorite is mixture of a fine-grained cataclastic domains, fragmental
plagioclase and pyroxene crystals, fragmental anorthosite clasts, and shock
melt veins; some of the veins have ~200 µm-size vesicles. Accessory
troilite, ilmenite, and chromite were observed.
Geochemistry: (C.
Agee and N. Muttik, UNM) olivine Fa37.9±1.3,
Fe/Mn=98±7, n=6; pigeonite Fs38.9±13.7Wo11.5±6.0,
Fe/Mn=62±10, n=5; augite Fs22.7Wo40.0, Fe/Mn=57±5,
n=1; plagioclase An96.2±0.5, n=3; Shock melt (20 µm defocused
electron beam, proxy for bulk meteorite composition): SiO2=46.3±1.8,
TiO2=0.44±0.18, Al2O3=26.9±5.3, Cr2O3=0.014±0.10,
MgO=5.6±2.7, FeO=6.4±3.2, MnO=0.08±0.05, CaO=14.4±2.0, NiO=0.03±0.03,
Na2O=0.54±0.24, K2O=0.14±0.07 (all wt%), MgO+FeO=12.1±5.5 (wt%), n=11.
Classification:
Lunar (feldspathic breccia)
Specimens: 11.7 g
including a probe mount on deposit at UNM, Steve Arnold holds the main mass.
|
from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10263
Mauritania
Purchased: 2015 May
Mass: 1015 g
Classification:
Lunar meteorite (feldspathic breccia)
History: Two
identical stones found together in Mauritania were purchased by Darryl Pitt
in May 2015 from a dealer in Zagora, Morocco.
Physical
characteristics: No fusion crust is evident. The interior
of each stone consists of white to light gray clasts set in a dark gray
matrix.
Petrography: (A.
Irving and S. Kuehner, UWS)
Fragmental breccia composed of angular mineral clasts of anorthite,
pigeonite, olivine, orthopyroxene, subcalcic augite, augite, fayalite,
silica polymorph, ilmenite, kamacite, rare zircon and rare taenite in a
finer grained matrix.
Geochemistry:
Olivine (Fa32.6-33.8, FeO/MnO = 87-102, N = 3), orthopyroxene
(Fs26.1Wo4.0, FeO/MnO = 53), pigeonite (Fs27.5-41.8Wo11.2-11.4,
FeO/MnO = 55-59; Fs61.8Wo21.0, FeO/MnO = 68; N = 3),
subcalcic augite (Fs41.5-51.7Wo30.9-32.6, FeO/MnO =
64, N = 2), fayalite (Fa93.6, FeO/MnO = 84), plagioclase (An93.2-94.8Or0.2-0.5,
N = 3). Bulk composition (R. Korotev, WUSL)
INAA of subsamples gave the following mean abundances (in wt.%) FeO 11.6,
Na2O 0.43; (in ppm) Sc 23.4, La 8.7, Sm 4.0, Eu 0.91, Yb 2.7, Lu
0.40, Th 1.3.
Classification:
Lunar (feldspathic fragmental breccia).
Specimens:
20.65 g including one polished endcut at UWB; main mass with DPitt.
|
from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10272
(Northwestern
Africa)
Purchased: 2015 May
Mass: 74.25 g
Lunar meteorite (feldspathic breccia)
History:
Purchased by Pierre-Marie Pelé and Fabien Kuntz in May 2015 from a dealer
in Agadir, Morocco.
Physical
characteristics: No fusion crust is evident. The interior
consists of white to light-gray clasts set in a dark-gray matrix.
Petrography: (A.
Irving and S. Kuehner, UWS)
Fragmental breccia composed of angular mineral clasts of calcic
plagioclase, pigeonite, olivine, orthopyroxene, subcalcic augite, augite,
fayalite, silica polymorph, Ti-Cr-rich spinel, Al-Ti-chromite, ilmenite,
rare baddeleyite and rare troilite in a finer grained matrix.
Geochemistry:
Olivine (Fa18.5-35.8, FeO/MnO = 90-109, N = 3), orthopyroxene
(Fs44.9Wo1.8, FeO/MnO = 70), pigeonite (Fs30.3Wo5.7;
Fs25.8Wo12.1; FeO/MnO = 55-54), subcalcic augite (Fs56.5Wo25.1,
FeO/MnO = 65), augite (Fs18.0Wo37.1, FeO/MnO = 56),
fayalite (Fa95.6, FeO/MnO = 96), plagioclase (An88.0-96.9Or0.5-0.2,
N = 3).
Classification:
Lunar (feldspathic breccia).
Specimens: 15.15 g
including one polished endcut at PSF; main mass
is held jointly by Mr. P. Pelé and Kuntz.
|
from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10291
(Northwestern
Africa)
Purchased: 2015 May
Mass: 10.01 g
Lunar meteorite (feldspathic breccia)
History:
Purchased by Fabien Kuntz in May 2015 from a dealer in Erfoud,
Morocco.
Physical
characteristics: No fusion crust is present on these
three small very similar stones. The interior of each one consists of
sparse white to beige clasts in a dark gray matrix containing vesicles.
Petrography: (A.
Irving and S. Kuehner, UWS)
Mineral fragments of plagioclase, olivine, orthopyroxene, pigeonite (some
exsolved), augite, fayalite, silica polymorph, ilmenite, Ti-chromite and
troilite, plus rare intersertal basalt clasts,
are set in a finer grained vesicular matrix.
Geochemistry:
Olivine (Fa30.1-33.7, FeO/MnO = 87-90, N = 3), orthopyroxene (Fs29.2Wo3.6,
FeO/MnO = 59), pigeonite (Fs26.4Wo10.3, FeO/MnO =
61), augite (Fs17.9-52.1Wo38.0-40.0, FeO/MnO = 43-75,
N = 2), clinopyroxene host (Fs26.9Wo35.8, FeO/MnO =
49), low-Ca pyroxene exsolution lamellae (Fs44.0Wo6.5,
FeO/MnO = 63), fayalite (Fa71.0, FeO/MnO = 100), plagioclase (An93.6Or0.1;
An61.5Or2.0).
Classification:
Lunar (feldspathic regolithic breccia)
Specimens: 2.52 g including
a polished slice at PSF; remainder with Kuntz.
|
rom
The Meteoritical Bulletin, No.
104
Northwest
Africa 10317
Morocco
Purchased: 6 Jul 2015
Mass: 11.0 g
Classification: Lunar meteorite
History: The single individual
of 11.0 g was found Morocco and purchased in Dakhla, Morocco, July 6, 2015.
Petrography: (A. Bischoff
and S. Ebert, IfP)
Fine-grained breccia consisting of small mineral and lithic clasts of
anorthositic rocks, impact melt rocks and breccias, granulitic lithologies,
anorthite, olivine, pyroxenes, and opaques embedded in a fine-grained,
well-lithified matrix.
Geochemistry: Mineral
compositions and geochemistry: Olivine (Fa34.1±2.3, range: Fa28.8-36.9;
mean Fe/Mn =96, n = 10), low-Ca pyroxene (Fs28.2-69.2Wo3.8-19.5,
mean Fe/Mn = 46.2, n = 5), Ca-pyroxene (Fs16.9-63.2Wo24.8-39.2,
Fe/Mn = 57.4), plagioclase (An96.0±1.5; range: An92.8-97.3;
n = 9)
Classification: Lunar
(feldspathic breccia)
Specimens: 2.2 g
including one polished thin section at IfP; main mass with S. Decker
(Meteorite-Museum, 55430 Oberwesel, Germany)
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from
The Meteoritical Bulletin, No. 104
Northwest
Africa 10376
(Northwestern
Africa)
Purchased: 2015
Mass: 20 g
Lunar meteorite
History: The
meteorite was purchased from the meteorite dealer Med Lamine
Ahmed.
Physical
characteristics: One small grayish individual lacking any
fusion crust was found in the northern Sahara.
Petrography: The
meteorite is a polymict breccia composed of lithic and mineral clasts
consolidated in a fine-grained clastic, partly molten and recrystallized
matrix. Lithic clasts are dominantly basaltic and gabbroic, mineral clasts
include up to 200 μm sized olivine, exsolved pyroxene, and feldspar
grains. Accessories are Ti-chromite, pyrrhotite, ilmenite, and silica. Some
calcite weathering veins are present.
Geochemistry:
low-Ca pyroxene: Fs29.3Wo4.8 FeO/MnO=51; Ca-pyroxene:
Fs16.3±1.3Wo36.3±2.5 (Fs4.1-18.8Wo31.1-40,
n=11, FeO/MnO=41-65); feldspar: An86.3±11.4Ab13.1±11 (An56-93.6Ab6.3-42.3,
n=16).
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from
The Meteoritical Bulletin, No. 105
Northwest
Africa 10546
(Northwest
Africa)
Purchased: 2015 Nov
Mass: 43.35 g
Classification:
Lunar meteorite (feldspathic breccia)
History: Purportedly
found near the border between Mauritania and Mali. Purchased by
Pierre-Marie Pelé in November 2015 from a dealer in Ouarzazate, Morocco.
Petrography: (A.
Irving and S. Kuehner, UWS)
Fragmental breccia composed of mineral clasts of anorthite, olivine,
pigeonite, augite, subcalcic augite, silica polymorph, ilmenite (with
inclusions of baddeleyite), Ti-Al-chromite and rare zircon. Microbubbles
are present in parts of the finer grained matrix along with minor secondary
barite.
Geochemistry:
Olivine (Fa23.1-39.3; Fa86.9; FeO/MnO = 83-95; N =
4), pigeonite (Fs21.7Wo13.9; Fs54.2Wo21.9;
FeO/MnO = 52-65; N = 2), augite (Fs13.0Wo37.8,
FeO/MnO = 39), subcalcic augite (Fs32.8Wo31.9,
FeO/MnO = 49), ferroan augite (Fs51.5Wo40.5, FeO/MnO
= 72), plagioclase (An90.3-93.3Or0.4-0.1, N = 2).
Classification:
Lunar (feldspathic breccia).
Specimens: A
9.72 g polished endcut piece is at PSF;
remainder with Mr. P. Pelé.
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from
The Meteoritical Bulletin, No. 105
Northwest
Africa 10599
(northwestern
Africa)
Purchased: 2015
Mass: 77.8 g
Classification: Lunar meteorite (feldspathic breccia)
History:
Purchased from Youssef Ait El Caid,
Morocco, 2015.
Physical
characteristics: One piece, no fusion crust, irregular
weathered exterior, saw cut reveals prominent white feldspathic clasts set
in a dark-gray groundmass.
Petrography: (C.
Agee, UNM) Microprobe examination
shows a polymict breccia with fragmental plagioclase, pyroxene, and olivine
grains, lithic fragments, shock melt domains, and small vesicles. Pyroxenes
are subcalcic augite and pigeonite with iron enrichment trends. Most
olivine is approximately Fa37 however there were also a few
fayalitic olivines (Fa62) observed. Likewise, anorthite is the
predominate plagioclase composition, but there were also a few bytownite
(An85) grains observed.
Geochemistry: (C.
Agee and M. Spilde, UNM). Olivine Fa37.1±2.4, Fe/Mn=95±8, n=7; pigeonite
Fs46.3±9.2Wo6.4±1.7, Fe/Mn=65±1, n=3; augite Fs36.5±12.2Wo24.6±2.7,
Fe/Mn=59±4, n=3; plagioclase An95.6±1.1, n=4; Shock melt (20
μm defocused electron beam, proxy for bulk meteorite composition): SiO2=44.03±0.87,
TiO2=0.50±0.21, Al2O3=26.95±2.82, Cr2O3=0.14±0.04,
MgO=5.51±1.57, FeO=6.75±1.84, MnO=0.09±0.03, CaO=15.36±1.12, NiO=0.03±0.02, Na2O=0.54±0.08, K2O=0.09±0.02
(all wt%), FeO/MnO=80±16, n=10.
Classification:
Achondrite (lunar feldspathic breccia)
Specimens: A
total of 16 g including a probe mount on deposit at UNM. Frank Carroll holds the main mass.
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from
The Meteoritical Bulletin, No. 105
Northwest
Africa 10644
(Northwest
Africa)
Purchased: 2016
Mass: 166 g
Lunar
meteorite (feldspathic breccia)
History:
Purchased by Dustin Dickens, February 2016, from a Moroccan dealer and sold
to Mendy Ouzillou.
Physical
characteristics: Single stone, irregular exterior, no fusion
crust. A saw cut reveals light-gray feldspathic clasts (up to 1 cm) and
some smaller, fragmental, white plagioclase grains set in a dark-gray
groundmass.
Petrography: (C.
Agee, UNM) This is a feldspathic
breccia showing several different textural domains: 1) poikilitic
plagioclase with olivine and pyroxene inclusions, 2) zones of fragmental
plagioclase, olivine, and pyroxene, 3) cataclastic zones of fine-grained
(~20 μm) silicates, 4) vesicular shock melt veins and pockets.
Pigeonite and augite show significant igneous, iron-enrichment trends.
Geochemistry: (C.
Agee and S. Spilde, UNM) Olivine Fa37.9±1.6, Fe/Mn=98±6, n=13; pigeonite
Fs39.3±13.9Wo17.0±4.1, Fe/Mn=66±9, n=11; augite Fs32.0±22.7Wo37.4±1.1,
Fe/Mn=60±20, n=2; plagioclase An97.6±0.5, n=5; Shock melt (20
μm defocused electron beam, proxy for bulk meteorite composition): SiO2=44.7±0.1,
TiO2=0.5±0.1, Al2O3=29.2±2.5, Cr2O3=0.09±0.05,
MgO=4.0±1.4, FeO=5.3±1.7, MnO=0.06±0.02, CaO=16.4±1.0, NiO=0.03±0.02,
Na2O=0.48±0.01, K2O=0.10±0.01 (all wt%), n=5.
Classification:
Lunar (feldspathic breccia).
Specimens:
20.73 g including a probe mount on deposit at UNM; Mendy Ouzillou holds the main
mass.
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from
The Meteoritical Bulletin, No.
105
Northwest Africa 10782
(Northwestern
Africa)
Found
2015; Purchased: 2015 May 01
Mass:
39.0 g
Lunar
Meteorite (regolith breccia)
History:
One
stone with no visible fusion crust. Recognized as a lunar breccia by L. Labenne.
Physical
characteristics: One stone with no visible fusion
crust. Recognized as a lunar breccia by L. Labenne.
Petrography:
(R. Hewins, S. Pont, B. Zanda,
MNHNP) This is a breccia composed
mainly of crystal clasts a few hundred μm in size, with a few glassy
to dendrite-bearing spherules about 1 mm in size. Matrix is very
fine-grained, in some cases glass with schlieren, with vugs
or vesicles. There are a few breccia clasts up to 4 mm, very fine grained
(1-2 μm) and in some cases with igneous textures (i.e. clast-laden
melt rock clasts). Breccia clasts contain feldspathic igneous clasts with intersertal textures resembling Apollo 14310 but finer,
as well as crystal clasts and rare lithic chips. Some pyroxene clasts show
exsolution. Accessory minerals include troilite, ilmenite, a silica phase
and, in the largest melt-rock, Ni-bearing metal.
Geochemistry:
Mineral
compositions and Geochemistry: (R. Hewins ans S. Pont, MNHNP)
The pyroxene compositions are Fs36.7Wo7.6 to Fs55.3Wo19.6,
and the atomic Fe/Mn falls just below the UNM lunar line with average ratio 71. Both magnesian and
ferroan olivine clasts are present, with FeO/MnO of 103 falling just below
the lunar value. Spinel contains ~40 wt% Cr2O3.
Plagioclase is An93.6Ab6.2Or0.2. The
glassy matrix is basaltic (sensu lato).
Classification:
(R. Hewins MNHN)
Lunar breccia. The meteorite contains anorthite with olivine and pyroxene
Fe/Mn ratios matching lunar. As it contains Ni-rich metal, glass spherules
and breccia clasts it is classified as a regolith breccia.
Specimens:
The main mass (31 g) is held by Labenne. The type specimen consists of 0.977 g and 6.88
g at MNHNP.
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from
The Meteoritical Bulletin, No. 105
Northwest
Africa 10810
Mauritania
Purchased: 2015
Mass: 402.4 g
Classification:
Lunar meteorite (feldspathic breccia)
History: Two
stones weighing 126.2 and 276.2 g were found in Mauritania and subsequently
purchased in Rissani in 2015. J. Donald Cline and
John Sinclair acquired the samples from a meteorite prospector at the
Tucson Gem and Mineral Show in February 2016.
Physical characteristics:
Sample has an irregular-ovoid shape and lacks fusion crust. The exterior
surface is weathered and light orangish-gray in color. One half of the
stone shows an obvious brecciated texture composed of dominant
light-colored clasts in a dark matrix. The other half appears to have been
buried and contains an orangish layer of caliche. One edge has a window cut
into the stone showing a mixture of rounded dark and light-colored lithic
and mineral clasts in a dark brown matrix. One slice contains an FeNi
grain.
Petrography:
Description and classification (A. Love, App): Sample is a polymict breccia composed of 5 mm sub-rounded
to angular lithic clasts and mineral clasts set within a micro-vesicular
black glassy matrix. Up to 5 mm subrounded to subangular clasts of olivine
gabbro with exsolved pyroxenes, troctolite, subophitic olivine basalt and
exsolved pyroxenes, granulitic anorthosite and poikolitic
crystalline impact melt breccia are the dominant lithic fragments
represented in the sample. Additionally, the sample contains mineral
grains, and symplectites composed of fayalite, Si-rich grains and
Ca-pyroxene in addition to glassy spherules and flow-banded agglutinates.
Accessory minerals ilmenite, ferroan chromite, fayalite and a silica polymorph.
Geochemistry: (A.
Love, App): Olivine (Fa23.1-45.3;
FeO/MnO=95.8-114.7, N=20), pigeonite (Fs25.8-30.1Wo16.3-7.3
N=14; Fs46.4-57.2Wo20.0-7.8; FeO/MnO=54.4-73.5, N=4);
augite (Fs16.5-21.5Wo23.8-38.5; FeO/MnO=47.2-52.0,
N=9); fayalite (Fa90.7-97.6; FeO/MnO=93.3-96.8, N=6);
plagioclase An95.0±2.7Or0.2±0.2, N=13). Bulk
Composition: (R. Korotev, WUSL):
INAA of 100 mg gave (in wt%) Na2O 0.4, FeO 10.9; (in ppm) Sc
19.7, Cr 17.8, Co 42.1, Ni 220, La 7.3, Sm 3.3, Eu 0.91, Yb 2.3, Lu 0.3, Hf
2.5, Th 1.1.
Classification:
Lunar (mingled regolith breccia)
Specimens:
PARI holds the main masses (276.2
and 89.07 g). A slice and an end cut weighing 20.82 g and one polished thin
section are on deposit at App.
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from
The Meteoritical Bulletin, No. 105
Northwest
Africa 10989
(Northwest
Africa)
Purchased: 2015
Mass: 14.4 g
Classification:
Lunar meteorite
History: This
stone was one of a group found in northwest Africa, near to the
Morocco/Algeria border; exact date and weights of other stones is unknown.
Purchased in 2015 from a Moroccan Dealer in Morocco.
Physical characteristics: The
total mass of the single stone was 14.4 g, and is dark brown in color with
a dark brown/black fusion crust.
Petrography: H.
Ashcroft, M. Anand, OU. A fragmental breccia containing a variety of
mineral (up to 1 mm) and lithic (up to 1 × 3 mm) fragments in a dark matrix
composed of finer-grained crystals and a dark, vesicular glass. Both
basaltic and feldspathic fragments are present in roughly equal
proportions. The breccia has a seriate fabric and the proportion of glass
and crystals in the matrix varies throughout the sample. Some crystals
exhibit evidence for shock and alteration (offset pyroxene lamellae,
recrystallized and maskelynitised plagioclase).
Minor secondary calcite veins and barite are seen throughout the sample.
Minerals are Olivine (forsteritic and fayalitic), Pyroxene (Orthopyroxene,
Pigeonite, Augite), Anorthite and trace amounts of ilmenite, chromite,
kamacite, schreibersite, apatite, merrilite,
silica.
Geochemistry:
Feldspar crystals are anorthitic and vary between An80-90, with
an average of An94 (N = 184). Some feldspars are recrystallized,
and others have been maskelynitised. A continuum
of pyroxene compositions (pigeonite to augite) are observed with a range in
Fs15-64, and Wo5-43. Four main clusters in olivine
composition are observed with Fa37, Fa51 and Fa70.
Some Fayalite (Fa90) is also observed. One mafic clast contains
orthopyroxene (Wo3En75Fs22), Olivine, (Fa75)
and anorthite (An95). One hedenbergite-fayalite-silica
symplectite is observed. The oxygen isotopes (R. Greenwood and I. Franchi, OU) are consistent with a lunar
origin with δ17O 3.42 ‰, δ18O 6.51 ‰,
Δ17O 0.03 ‰. Average FeO/MnO for Olivine is 105, and
Pyroxene is 66.
Classification:
Lunar (mixed fragmental breccia)
Specimens:
Main mass resides with G. Ensor. The type specimen (3.4 g) is deposited in
the OU meteorite collection.
|
from
The Meteoritical Bulletin, No. 106
Northwest
Africa 11109
Morocco
Find: 2016
Mass: 77 g (10 pieces)
Classification:
Lunar meteorite
History:
Purchased by Ke Zuokai in
Dec. 2016 from a Moroccan dealer.
Physical
characteristics: The meteorite has a black fusion crust
and is partially covered with weathering product.
Petrography: (Li
Y., PMO) Mineral fragments with
minor lithic clasts (0.1 to 1.5 mm) set in a poorly recrystallized
anorthositic matrix. Vesicular shock melt veins and pockets are present.The lithic clasts include rocks of
anorthositic, gabbroic and noritic composition. Mineral fragments consists of pyroxene, olivine, plagioclase grains, and
minor quartz grains. Other accessory minerals include chromite, ilmenite
and troilite.
Geochemistry:
Plagioclase An90.5-97.0Ab2.8-9.1Or0.4;
pigeonite Fs23.1-57.0Wo4.9-21.2, Fe/Mn=46.6-74.6;
augite Fs13.6-55.1Wo27.0-43.7, Fe/Mn=43.3-85.4;
olivine Fa31.1-45.7, Fe/Mn=81.1-108.4.
Classification:
Lunar, breccia
Specimens: 16 g
is on deposit at PMO,
Ke Zuokai
holds the main mass.
|
from
The Meteoritical Bulletin, No. 106
Northwest
Africa 11185
(Northwest
Africa)
Purchased: 2016 June
Mass: 94.02 g
Classification:
Lunar meteorite (feldspathic breccia)
History:
Purchased by Ben Hoefnagels in June 2016 from a dealer in Taliouine, Morocco.
Physical characteristics: Four
stones (total weight 94.02 g) of very similar appearance purchased together
from the same dealer exhibit the same types of white clasts in a dark-gray
matrix.
Petrography: (A.
Irving and S. Kuehner, UWS)
Breccia composed of angular mineral grains of anorthite, olivine,
pigeonite, exsolved pigeonite, subcalcic augite, augite, Ti-Al-chromite,
ilmenite and fayalite in a finer grained matrix containing low-Ni kamacite,
taenite, troilite, baddeleyite and Mg-ilmenite. A quench-textured melt rock
clast was also observed.
Geochemistry:
Olivine (Fa34.1, FeO/MnO = 107; Fa91.2, FeO/MnO = 82;
N = 2), pigeonite (Fs22.4-28.6Wo15.0-8.1, FeO/MnO =
64-68, N = 2), subcalcic augite (Fs20.7Wo30.7,
FeO/MnO = 58), augite (Fs50.2Wo37.5, FeO/MnO = 65),
plagioclase (An93.5Or0.4; An85.5Or1.2;
N = 2). Bulk composition (R. Korotev, WUSL):
INAA of subsamples of two stones gave INAA of subsamples gave the following
mean abundances (in wt.%) FeO 10.0, Na2O 0.43; (in ppm) Sc 18.9,
Ni 300, La 8.3, Sm 3.86, Eu 0.98, Yb 2.64, Lu 0.37, Hf 2.8, Th 1.2.
Classification:
Lunar (feldspathic breccia)
Specimens:
19.1 g including a 10.3 g polished endcut from one stone at UWB; remainder with Mr. B.
Hoefnagels.
|
from
The Meteoritical Bulletin, No. 106
Northwest
Africa 11249
(Northwestern
Africa)
Purchased: 2017 January
Mass: 73.6 g
Lunar meteorite (feldspathic breccia)
History:
Purchased by Ben Hoefnagels in January 2017 from
a dealer in Zagora, Morocco.
Physical
characteristics: A single stone (73.6 g) with a brownish
weathered exterior and a fresh, mostly very dark gray interior with some
whitish clasts.
Petrography: (A.
Irving and S. Kuehner, UWS)
Breccia composed of angular mineral fragments and sparse, fragmented glass
spheres in a finer grained matrix containing some vesicles. Minerals are
anorthite, olivine, pigeonite, ferropigeonite, fayalite, kamacite,
Al-Cr-Fe-Mg spinel, zircon and minor barite. The specimen is crosscut by
some glass-rich shock veins.
Geochemistry:
Olivine (Fa15.5-50.5,
FeO/MnO = 75-91, N = 4), pigeonite (Fs25.5-35.2Wo10.6-18.8,
FeO/MnO = 58-69, N = 4), ferropigeonite (Fs63.2Wo24.4,
FeO/MnO = 72), anorthite (An93.9-96.6Or0.3, N = 2).
Classification:
Lunar (feldspathic regolith breccia).
Specimens: 15.1 g
including a polished endcut and one polished
mount at UWB; remainder
with Mr. B. Hoefnagels.
|
from
The Meteoritical Bulletin, No. 107
Northwest
Africa 11563
(Northwestern
Africa)
Purchased: 2016 June
Mass: 54.5 g
Lunar meteorite (feldspathic breccia)
History:
Purchased by Ben Hoefnagels in June 2016 from a
Moroccan dealer.
Petrography: (A.
Irving and S. Kuehner, UWS)
Breccia composed of mineral clasts of anorthite, labradorite, olivine,
orthopyroxene, pigeonite, subcalcic augite, exsolved pigeonite, ilmenite,
fayalite and silica polymorph in a finer grained, partly vesicular matrix
containing minor troilite and kamacite.
Geochemistry:
Olivine (Fa23.0-37.4,
FeO/MnO = 94, N = 2), orthopyroxene (Fs29.5Wo4.5,
FeO/MnO = 45), pigeonite (Fs29.6Wo7.4, FeO/MnO = 83),
subcalcic augite (Fs22.7Wo25.1; Fs34.2Wo32.4,
FeO/MnO = 71-77, N = 2), anorthite (An95.0Or0.2),
labradorite (An50.9-54.1Or3.6-1.0, N = 2).
Classification:
Lunar (feldspathic regolith breccia).
Specimens: 11.8 g in
the form of a polished endcut at UWB; remainder
of the stone with Mr. B. Hoefnagels.
|
from
The Meteoritical Bulletin, No. 105
Galb
Inal
Inchiri,
Mauritania
Find: January 2011
Mass: 4050 g
Classification:
Lunar meteorite (feldspathic breccia)
History: (H. Chennaoui Aoudjehane, A. Jambon) Found in 2011 by nomads, in a sandy area close
to the village of Inal, Mauritania, south of Tichla.
The stone was found north of the railway and south of the frontier. The stone was given the provisional name
"Northwest Africa 7173" in Jan 2012, prior to documentation of
the find location.
Physical characteristics: A 4
kg crust-free and minimally weathered stone, broken in two pieces. The
black lustered stone has up to centimeter-sized white lithic clasts. The
surface is sand blasted. Magnetic susceptibility (UPVI): log χ (× 10-9
m3/kg)= 3.93.
Petrography: (A. Jambon, O. Boudouma, UPVI) Feldspathic breccia with a
significant melt matrix containing petrographically diverse areas. Lithic
(ferro anorthosite, troctolite, spinel troctolite, norite;
hedenbergite-fayalite-silica; rare clasts of silica associated with
K-feldspar) and mineral fragments, shocked clasts, impact melt pockets,
devitrified glassy clasts and glass beads. Contains ilmenite, ulvöspinel, chromite, ilmenite, rutile, (F-Cl) apatite.
Rare small grains of troilite, kamacite and schreibersite.
Geochemistry: (A. Jambon, UPVI
and R. Korotev, WUSL) Orthocumulate olivine Fa19 (FeO/MnO = 90),
plagioclase An94, subcalcic augite Fs22Wo30,
Pigeonite Fs27-33Wo5-15 and Fs35-4Wo12-19,
Ca-pyroxene core, Fs16Wo31 and rim, Fs41Wo14.
Bulk composition: XRF (UPVI) INAA (WUSL). INAA : Na2O = 0.45 wt %; Sc = 21 ppm; Cr = 1400 ppm; FeO = 9.5 wt %; Ni = 200 ppm; Sm = 3.5 ppm, Eu = 0.95 and Ba =
250 ppm. XRF wt %: SiO2 =
45.7; Al2O3 = 21.6; Cr2O3 =
0.2; TiO2 = 0.48; FeO = 9.6; MgO = 4.1; CaO = 17.4; K2O
= 0.41. Oxygen
isotopes (R. Greenwood, OU) : δ17O‰= 3.238, δ18O‰=
6.198, Δ17O‰= 0.015.
Classification:
Lunar regolith breccia. Despite a chemical kinship with NWA 2995
the physical aspect and texture do not favor pairing of these two finds.
Specimens:
A 21.5 g type specimen is on deposit at UPVI.
Anonymous finder holds the main mass.
|
Randy
Says…
By
number (N=24) and mass (21.2 kg) this
is one of the largest pair groups.
|
More
Information
Meteoritical
Bulletin Database
NWA
7834 | 7948 | 8306 | 10149 | 10172 | 10203 | 10253 | 10258 | 10263 | 10272 | 10291 | 10317 | 10376 | 10509 | 10546 | 10644 | 10782 | 10810 | 10989 | 11109 | 11185 | 11249 | Galb Inal
References
Ashcroft
H. O., Anand M., Korotev R. L., Greenwood R. C., Franchi I. A., and Strekopytov S. (2017) NWA 10989 – A
new lunar meteorite with equal proportions of feldspathic and VLT material.
48th Lunar and Planetary Science Conference, abstract no. 1481.
Boyle
S., Gross J., and Prissel T. C. (2018) Understanding
the magnesium-suite lithology and lunar highlands terrain through a
detailed investigation of lunar meteorites Northwest Africa (NWA) 10291 and
11182. 49th Lunar and Planetary Science Conference, abstract no. 2346.
Korotev
R. L. and Irving A. J. (2014) Keeping up
with the lunar meteorites — 2014. 45th Lunar and Planetary Science
Conference, abstract no. 1405.
Korotev
R. L. and Irving A. J. (2015) Keeping up
with the lunar meteorites — 2015.
46th Lunar and Planetary Science Conference, abstract no. 1942.
Korotev
R. L. and Irving A. J. (2016) Not quite
keeping up with the lunar meteorites – 2016. 47th Lunar and Planetary
Science Conference, abstract no. 1358.
Korotev R. L. and Irving A.
J. (2017) Still not keeping up with the lunar
meteorites – 2017. 48th Lunar and Planetary Science Conference,
abstract no. 1498.
Zeng X., Joy K. H., Li S., Pernet-Fisher J., Li X., Martin D. J. P., Li Y. and
Wang S. (2018) Multiple lithic clasts in lunar breccia
Northwest Africa 7948 and implication for the lithologic components of
lunar crust. Meteoritics
and Planetary Science 53:1030‒1050.
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