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- Availability
- Sold
- Locality
- Manganese mine, Copper Harbor, Keweenaw Co., Michigan, United States
- Formula
- Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10ยท4H2O
- Size
- 2 x 1.5 x 1.5 cm - Thumbnail
Rusty red tiny tabular crystals. Rich and excellent specimen.