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| Cactus Springs | |||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Cactus Springs This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2008 Country: United States Mass:  176 g | ||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 11472 approved meteorites (plus 6 unapproved names) classified as L6. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 17 Feb 2017 | ||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Cactus Springs 36.57098°N, 115.80987°W Nevada, United States Find: 2008 May 23 Classification: Ordinary chondrite (L6) History: Found 7.4 Km from Cactus Springs. The stone was found along the US-95 freeway between Creech Air Force Base and the Mercury test site. Petrography: The stone is very recrystallized, but relict PO, POP and BO chondrules can be discerned. Chondrule diameters range from 450-2500 μm. The olivine grains exhibit weak mosaic extinction, but no maskelynite is present. There are small irregular grains of troilite inside larger grains of metallic Fe-Ni. There are rare tiny grains (0.5 × 1 μm) of metallic Cu at the interface of metallic Fe-Ni and troilite. The troilite is polycrystalline. Chromite gains are extensively fractured. There is a 4-5-mm-long dark shock vein traversing the rock; the vein contains troilite surrounding fragmented silicate grains. Also present are chromite-plagioclase assemblages and rare chromite veinlets. Plagioclase grains range from 30 - 200 μm in diameter. Olivine and orthopyroxene are homogeneous. In addition, there are grains of Ca-pyroxene (Fs6.6Wo46.5). | ||||||||||||||||||||||||||||||||||||||
| Data from: MB106 Table 0 Line 0: |
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| Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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| References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:
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Statistics: This is 1 of 155 approved meteorites from Nevada, United States (plus 4 unapproved names) This is 1 of 1865 approved meteorites from United States (plus 890 unapproved names) (plus 28 impact craters) | ||||||||||||||||||||||||||||||||||||||
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