| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Colorado > Quartz pseudomorphs after Calcite with Sphalerite |
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| DESCRIPTION: | No. 60679 |
| Mineral: | Quartz pseudomorphs after Calcite with Sphalerite |
| Locality: | Portland Mine, Ouray County, Colorado |
| Description: | Translucent white quartz epimorphs after calcite crystals that are hollow on the underside with late-growth of a translucent green 4 mm sphalerite crystal. Calcite formed first, was coated with quartz, then the calcite dissolved, and sphalerite formed. |
| Overall Size: | 4x3x3 cm |
| Crystals: | micro to 4 mm |
| Archived: | For reference only |
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