| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Mexico > Sphalerite (Spinel Law twinned crystals) with Quartz and Fluorite |
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| DESCRIPTION: | No. 72991 |
| Mineral: | Sphalerite (Spinel Law twinned crystals) with Quartz and Fluorite |
| Locality: | Santa Eulalia District, Aquiles Serdán, Chihuahua, Mexico |
| Description: | Lustrous translucent brown-black sphalerite crystals to 16 mm with transparent colorless quartz crystals to 3 mm plus minor colorless fluorite. The sphalerite crystals are twinned following the Spinel Law of twinning on the {111} octahedral plane. Ex. D. Miller collection #M2001; collected ca. 1999 |
| Overall Size: | 6x5x3.5 cm |
| Crystals: | 0.5-16.0 mm |
| Archived: | For reference only |
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