07.01.2006 "Von Steinen, die vom Himmel fallen" Christian Köberl (University Vienna)
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16.10.2005 |
16.10.2005 |
16.10.2005 |
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16.07.2004
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13.03.2004 GUJBA - for sale added - a fantastic Bencubbinite
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13.02.2004 again SPECTACULAR NEWS about the Lunaite Dhofar 489 samples only available by austromet, only 2 pieces left
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02.11.2003 cherry picked KILABO INDIVIDUALS for Sale never seen before on the market !!!
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19.04.2003 fresh fragments of a fresh fall, which fell exactly on the same day as the Thuathe H4 Chondrite in Lesotho July 21, 2002
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29.03.2003 SPECTACULAR NEWS about the new Lunaite Dhofar 489 Possible early crystallized lunar crustal material !!
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16.02.2003 AUSTRIA's MOST BEATUIFUL METEORITE
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26.01.2003 from Vienna Collection
Dar al Gani 996 a new lunar fragmental breccia Dar al Gani 996 Found 1999 May 14, Libya A single stone of 12.31 g was found on 1999 May 14 by an anonymous finder in the sand desert of Dar al Gani. Classification and mineralogy (A. Greshake and M. 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; dark fine-grained and microporphyritic impact melt clasts, olivine, pyroxene and cataclastic feldspar; no regolith component, i.e. glass spherules were 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. schlieren and vesicles are rare; plagioclase, An96.7 (range An94.3-98.3); pigeonite, Fs19.7-51.3Wo5.5-14.1; augite, Fs24.7-38.7Wo24.7-41.7; most Ca-pyroxenes contain pigeonite exsolution lamellae; olivine, Fa30.5 (range Fa14.2-43.2); orthopyroxene, FeNi metal, ilmenite, Mg-Al-chromite, and troilite are present as minor phases; crystalline fragments include intersertal impact melt rocks, Specimens: main mass with anonymous finder; type specimen 2.5 g plus one polished thin section MNB.
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15.11.2002 DHOFAR 489 - available again |
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26.07.2002 MOCS, STANNERN - Slices for sale |
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Meteoritical Bulletin, No. 86 Dhofar 489 19°25' N, 54°35' E Lunar meteorite (feldspathic crystalline matrix breccia) One 34.4 g stone was found in the Dhofar region of Oman. Mineralogy and classification (H. Takeda, Chiba, T. Ishii and M. Ohtsuki UTok): A feldspathic fragmental breccia consisting of clasts of various lithologies embedded into a fine-grained crystalline matrix (crystals up to 0.04 mm in length). Clasts include cataclastic feldspars up to 1.8 x 0.6 mm in size, plus dark fine-grained impact melt breccia 3.3 x 2.3 mm in size with feldspar fragments. Plagioclase compositions of An95-97 are within the range of lunar anorthites. Pyroxene crystals in plagioclase and crystalline matrix range from En75Fs21Wo4 to En85Fs10Wo5 with FeO/MnO (wt%) == 57. Olivine: Fa15 to Fa24 with FeO/MnO (wt%) == 78. Fine Ca carbonate veins penetrate into the specimen. Unlike known lunar meteorites, this lunar rock is a feldspathic crystalline matrix breccia. The most Mg-rich pyroxene is more Mg-rich than those of common lunar regolith breccias and similar to those of 60019, an Apollo 16 breccia containing poikilitic clasts. This lunar meteorite differs from other known lunar meteorites from the Dhofar region, which are either feldspathic regolith breccias or fragmental breccias. Specimens: type specimen: 6 g, NSMT; 0.42 g plus two polished thin sections, Chiba; main mass with anonymous finder. |