Northeast Africa 003
Northeast Africa 003
credit: Jakub Haloda)
A small fragment of NEA 003
credit: Randy Korotev)
Sawn face of a different
small fragment of NEA 003. Note the weathering. Click on image for enlargement.
Thanks to Doug Ross for the sample.
credit: Randy Korotev)
Meteoritical Bulletin, No. 90, Meteoritics
& Planetary Science 41,
Find: 2000 November and 2001 December
Mass: 124 g
mare basalt and basaltic breccia)
dark gray, 6 g stone was found by a prospector 12 km NW from Al Qaryah ash Sharqiyah in Wadi Zamzam area, Libya, in
December 2001. A stone of 118 g with incomplete fusion crust was found
nearby in December 2001.
(J. Haloda and P. Týcová, PCU)
The meteorite contains two adjacent parts, mare basalt and basaltic
breccia, both of which were investigated in detail. The main portion (~75 vol%) of the meteorite is coarse-grained, low-Ti
olivine-rich basalt, showing porphyritic texture of olivine (Fo19-73),
zoned pyroxene (En5-71Wo6-38), and plagioclase (An84-92)
with late-stage mesostasis containing silica, Fe-rich pyroxene and
pyroxferroite, plagioclase, ilmenite, troilite, and apatite. Opaque phases
include chromite, Ti-rich chromite, ulvöspinel, ilmenite, troilite, and
trace Fe,Ni metal; shock veins and impact melt
pockets are present. All plagioclase is totally converted to maskelynite.
Mineral modes are (vol%) olivine = 17.5, pyroxene
= 60.6, plagioclase = 18.2, ilmenite = 1.2, spinel = 0.8, mesostasis + impact
melt = 1.8.
Bulk composition: SiO2 = 44.7, TiO2 = 1.3, Cr2O3
= 0.5, Al2O3 = 8.0, FeO = 21.8, MnO = 0.3, MgO =
13.6, CaO = 9.2, Na2O = 0.3, K2O = 0.1 (all wt%),
Fe/Mn = 81. Concentration of selected elements (INAA; R. Korotev, WashU)
Sc = 50.8, Co = 50.5, Ni = 84, Hf = 1.1, Ta = 0.15, Th = 0.43, U = 0.2 (all
ppm); REE pattern is flat at 10 × CI with slight negative Eu anomaly, not
depleted in LREE. Adjacent part is basaltic breccia (~25 vol%) consisting of well-consolidated glassy
impact-melt matrix containing scattered mineral fragments of chemical
composition identical with the coarse-grained low-Ti olivine-rich basalt
and two larger clasts of low-Ti mare basalt lithologies. The low-Ti
basaltic clasts are finer-grained and petrologically more evolved. No
regolith component or highland material is present.
Achondrite (lunar mare basalt and basaltic breccia).
A 20 g type specimen and two polished thin sections are on deposit at PCU.
An anonymous finder holds the main mass.
it's an unbrecciated basalt. Alternatively, it's a breccia with a big clast
basalt is distinct from the Apollo and Luna basalts.
M., Tartčse R., Barnes J. J., Starkey N. A., Franchi I. A., and Russell S. S. (2013) Abundance,
distribution, and isotopic composition of water in the Moon as revealed by
basaltic lunar meteorites (abstract). In 44th Lunar and Planetary Science
Conference, abstract no. 1957.
S. M., Shearer C. K., Vander Kaaden K. E.,
McCubbin F. M., and Bell A. S. (2015) Petrogenesis
of primitive and evolved basalts in a cooling Moon: Experimental
constraints from the youngest known lunar magmas. 46th Lunar and
Planetary Science Conference, abstract no. 2155.
V.A., Burgess R., Bischoff A., Sokol A. K., and Haloda J. (2007) Kalahari 009
and North East Africa 003: Young (<2.5 ga)
lunar mare basalts (abstract). In Lunar and Planetary Science XXXVIII,
abstract no. 1611, 38th Lunar and Planetary Science Conference.
J., Korotev R. L., Týcová P., Jakeš P., and Gabzdyl P. (2006) Lunar
meteorite Northeast Africa 003-A: A new lunar mare basalt (abstract).
and Planetary Science XXXVII, number 2269, Lunar and Planetary
J., Týcová P., Jakeš P., Gabzdyl
P., and Kosler J. (2006) Lunar
meteorite Northeast Africa 003-B: A new lunar mare basaltic breccia
(abstract). In Lunar
and Planetary Science XXXVII,
abstract # 2311, Lunar and Planetary Institute.
J., Gabzdyl P., Týcová
P., and Fernandes V. A. (2007) Lunar
meteorite Northeast Africa 003-A: Microstructures, crystallization modeling
and possible lunar source areas (abstract). In Lunar and Planetary
Science XXXVIII, abstract no. 2025, 38th Lunar and Planetary
J., Fernandes V.A., Burgess R., and Thöni M.
(2007) Lunare mare basalt meteorite NEA003-A: Chronology,
chemical and petrological composition. Eos Trans. AGU,
Fall Meet. Suppl., Abstract V23B-1440.
J., Tycova P., Thöni
M., and Jelenc M. (2009) The
petrogenesis and chronology of lunar meteorite Northeast Africa 003-A:
Sm-Nd and Rb-Sr isotopic studies (abstract). In Lunar and Planetary
Science XL, abstract no. 1247, 40th Lunar and Planetary Science
J., Týcová P., Korotev R. L., Fernandes V. A.,
Burgess R., Thöni M., Jelenc
M., Jakeš P., Gabzdyl P., and Košler
J. (2009) Petrology,
geochemistry, and age of low-Ti mare-basalt meteorite Northeast Africa
003-A: A possible member of the Apollo 15 mare basaltic suite. Geochimica et
Cosmochimica Acta 73,
R. L. and Zeigler R. A. (2007) Keeping up
with the lunar meteorites (abstract). In Lunar and Planetary Science XXXVIII,
abstract no. 1340, Lunar and Planetary Institute.
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