Dar al Gani 262, 996, 1042, and 1048
1.54-gram sample of Dar al Gani 262
credit: Fernlea Meteorites)
sawn face of DaG 262. Millimeter
ticks for scale.
credit: Ryan Zeigler)
sawn face of DaG 996. The veins are fractures filled with terrestrial
Millimeter ticks for scale.
credit: Randy Korotev)
sawn face of DaG 1042. Millimeter ticks for scale.
credit: Randy Korotev)
Meteoritical Bulletin, No. 81, Meteoritics
& Planetary Science 32,
al Gani 262
Found: 1997 March 23
Mass: 513 g
single 513 g stone was found in the Sahara.
and description (A. Bischoff and D. Weber, Mün):
contains clasts up to 1 cm, mainly anorthositic lithologies and crystalline
impact melt breccias, and glass fragments and spherules (partially
devitrified) imbedded in a fine-grained, well-consolidated matrix; bulk
plagioclase: An>95; olivine, Fa20-71; low-Ca
pyroxene, Fs26-63; has shock veins; contains metal particles
(5-26 wt% Ni), ilmenite, troilite, Ti-Cr-spinel; meteorite is moderately
weathered. See Bischoff and Weber (1997) for additional information.
type specimen several grams plus two thin sections, Mün;
main mass with finder.
Bulletin, No. 87, Meteoritics
& Planetary Science 38,
al Gani 996
Found 1999 May 14
Mass: 12.31 g
meteorite (fragmental breccia)
stone of 12.31 g found by an anonymous finder in the sand desert of Dar al
and mineralogy (A. Greshake, MNB;
M. Kurz, Kurz):
a fragmental breccia with lithic and mineral fragments set into a
fine-grained clastic matrix; the clast size is generally =1 mm; mafic
clasts are by far more abundant than feldspathic clasts; schlieren and
vesicles are rare. Plagioclase composition, An96.7 (range An94.3-98.3);
pigeonite, Fs19.7-51.3 Wo5.5-14.1; augite, Fs24.7-38.7
Wo24.7-41.7; most Ca-pyroxenes contain pigeonite
exsolution lamellae; olivine, Fa30.5 (range Fa14.2-43.2).
Orthopyroxene, Fe,Ni metal, ilmenite,
Mg-Al-chromite, and troilite are present as minor phases; crystalline
fragments include intersertal impact melt rocks, dark fine-grained and
microporphyritic impact melt clasts, olivine, pyroxene and cataclastic
feldspar; no regolith component, i.e. glass spherules was found; very
strong mosaicism of plagioclase, as well as
abundant melt veins and melt pockets attest a high degree of shock; the
meteorite is moderately weathered; calcite occurs in cracks.
main mass with anonymous finder; type specimen, 2.5 g, plus one polished
thin section, MNB.
Meteoritical Bulletin, No. 91, Meteoritics
& Planetary Science 42,
al Gani 1042
al Gani region, Al Jufrah, Libya
Mass: 801 g
(lunar, feldspathic regolith breccia)
and physical characteristics: A single stone of 801 g
with partial fusion crust was found in 1999.
Petrography and mineral
compositions: (T. Arai, NIPR)
Feldspathic regolith breccia with typical lunar highland breccia clasts
(e.g., feldspathic crystalline melt breccias, granulitic lithologies,
cataclastic anorthosites, etc.) embedded in a well-lithified matrix.
Granulitic clasts consist of dominant plagioclase (An95.4–96.7)
with orthopyroxene (Wo3Fs19En78, Fe# =
0.19), clinopyroxene (Wo8–12 Fs26–28 En62–64,
Fe# = 0.28–0.30; Wo44Fs9En47, Fe# =
0.15–0.16), olivine (Fo65–69,81–84), ilmenite, and Ti-rich
chromite (Chr45Hc19Usp36). Isolated
mineral fragments are plagioclase, co-existing augite and pigeonite, and olivine
with ranges of compositions similar to those in the above clasts.
Anorthositic impact glasses occur both as glass veins and spherules. The
FeO/MnO value of olivines (90 ± 20) supports a lunar origin. Terrestrial
calcites pervasively occur along cracks.
Achondrite (lunar feldspathic regolith breccia); moderate weathering.
specimen: One specimen of 37 g is on deposit at JAXA.
One 6.1 g sample and thin sections are on deposit at NIPR. An
anonymous finder holds the main mass.
Bulletin, No. 92, Meteoritics
& Planetary Science 42,
al Gani 1048
Found 2001 Jul 28
Mass: 0.801 g
(lunar, feldspathic breccia)
and physical characteristics: A tiny complete individual
stone was reovered by an anonymous hunter in June
2001 and purchased by N. Classen in 2003 in Vienna, Austria.
characteristics: A single 0.801 g medium grey stone
with some diffuse whitish clasts. About 70% of the stone is covered by
and mineral compositions: (A. Irving and S. Kuehner,
Predominantly, very fine-grained mineral debris with some larger lithic
clasts (up to 0.3 mm) and vesicular glassy matrix and veins. Minerals
identified include pyroxene, plagioclase, olivine, ilmenite, kamacite and
troilite. Lithic clasts include gabbro (composed of plagioclase and
pigeonite) and very fine grained, ophitic-textured basalt (composed of
plagioclase and olivine with accessory orthopyroxene, troilite, metal and
rutile). Several glassy spheres were found.
Olivine (Fa19.6-49.6, FeO/MnO = 93-98), pigeonite (Fs20.2-61.9
Wo5.3-7.2, FeO/MnO = 54.8-66.5), plagioclase (An97-98Or0).
Achondrite (lunar, feldspathic breccia). This stone likely is paired with
Dar al Gani 262 and Dar al Gani 996.
A total of 0.33 g of sample is on deposit at UWS.
holds the main mass.
al Gani 262
| 996 | 1042 | 1048
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& Planetary Science 32, A13-A14.
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S., Spettel B., Verchovsky A. B., Weber H. W.,
Weckwerth G., and Wolf D. (1998) Petrology,
chemistry, and isotopic compositions of the lunar highland regolith breccia
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