| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from (Michigan or Minnesota) > Calcite var. Manganocalcite |
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| DESCRIPTION: | No. 27722 |
| Mineral: | Calcite var. Manganocalcite |
| Locality: | Vermillion Ridge, Lake Superior District, (Michigan or Minnesota) |
| Description: | Red crystals of Mn-rich calcite coating iron ore matrix. The calcite crystals are rhombic and are clustered in boxwork shapes. It is unclear what state the site is located in, but the iron ore matrix indicates Minnesota iron mining region. Ex. A. Lincoln Sherk II, MD. (1896-1970); ex. Dr. J. B. S. Egee (?-1930) |
| Overall Size: | 6x4x4 cm |
| Crystals: | .5 mm |
| Archived: | For reference only |
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