NWA 12971 (paired) Lunar TroctoliteMeteorites for Sale
Location: Sahara Desert, exact location unknown.
Found: Purchased, 2019 April.
Classification: Lunar (troctolitic melt rock)
Description: A single light gray stone (280 g) with visible vesicles and light brown weathering products on one side. The fresh interior is composed predominantly of vesicular melt rock which contains some clast-like regions of coarser grained melt rock. Petrography : (A. Irving, UWS and P. Carpenter, WUSL ) Very fine-grained (grainsize up to 5 µm), microvesicular melt-textured specimen composed predominantly of anorthite plus subordinate olivine and accessory pigeonite, augite, chromite (exhibiting zoning from Ti-bearing cores to Ti-free rims), troilite and pyrrhotite. No intact clasts were observed anywhere in the entire 5 cm diameter slice examined by microprobe imaging, but there are sporadic coarser-grained (up to 40 µm) melt-textured regions. Geochemistry : Anorthite (An 97.2-97.7 Or 0.0 , N = 2), olivine (Fa 24.9-35.5 , FeO/MnO = 77-99, N = 6), magnesian olivine core (Fa 19.0 , FeO/MnO = 98), ferroan olivine rim (Fa 38.3 , FeO/MnO = 80), pigeonite (Fs 26.2 Wo 19.4 , FeO/MnO = 44), augite (Fs 19.8-35.1 Wo 35.5±0.0 , FeO/MnO = 43-55, N =2). Classification : Lunar (troctolitic melt rock). The predominance of anorthite and olivine indicates a troctolitic bulk composition. The texture and apparent absence of clasts are consistent with crystallization from a totally molten state.
Link to Meteoritical Bulletin Database.
Other references:Washington University in Saint Louis pages
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| # NWA12971-470 | #NWA12971-498 | # NWA12971-584 | # NWA12971-715 | About Scale: Each photo has a small one centimeter cube. That's a little less than a half inch on a side. The coin above is a US dime. |
| Weight: 0.470 gm | Weight: 0.498 gm | Weight: 0.584 gm | Weight: 0.715 gm | |
| Features: Part slice. | Features: Part slice | Features: Part slice | Features: Part slice | |
| Price: sold | Price: sold | Price: sold | Price: sold |
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| # NWA12971-926 | # NWA12971-1-565 | # NWA12971-1-583 | # NWA12971-2-222 | # NWA12971-3-903 |
| Weight: 0.926 gm | Weight: 1.565 gm | Weight: 1.583 gm | Weight: 2.222 gm | Weight: 3.903 gm |
| Features: Part slice | Features: Part slice | Features: Part slice | Features: End | Features: Part slice |
| Price: sold | Price: sold | Price: sold | Price: sold | Price: sold |
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| # NWA12971-4-308 |
| Weight: 4.308 gm |
| Features: Part slice |
| Price: sold |
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