Carminite and Scorodite crystals from the Gold Hill Mine, Utah, USA. One unique flat.
This unique flat contains a varied selection of Carminite and Scorodite specimens from the well known Gold Hill Mine in Utah. The specimens display mainly pale green to grey green crystal coatings and fine crystalline aggregates on matrix. On several specimens, the crystals are clearly visible and form attractive mineral coatings that create a characteristic contrast with the light coloured host rock. The flat shown is exactly the collection offered.
Geology & Origin
The Gold Hill Mine in Utah, USA, is a classic locality for secondary arsenate minerals. Carminite forms there as a lead iron arsenate within the oxidation zone of arsenic rich ore deposits and commonly occurs together with Scorodite, a hydrated iron arsenate. These mineral assemblages developed through the weathering of primary ore minerals and are highly valued by collectors because of their rare mineral species and distinctive parageneses.
Abbreviations commonly used in mineralogy.
| Abbreviation | Meaning |
| xl | single crystal, possible with matrix |
| xls | noticeable crystals |
| (xl) | embedded or damaged |
| (xls) | embedded or damaged |
| MASS | massive and/or amorphous pieces |
| TYP | type locality of the original description |
| SWUV | shortwave-UV-reaction |
| UV | ultraviolet reaction |
| SC | self-collected |
| U | unique (single unique piece) |