- Shigaite, Rhodochrosite
- N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa
- Thumbnail, 2.0 x 1.1 x 0.9 cm
Shigaite is a very rare aluminum manganese sulfate. This fine thumbnail features a gemmy, 9mm, tabular, hexagonal, dark cherry-red shigaite crystal placed atop a mounded clusters of very sparkly, transparent, rose-red rhodochrosite crystals, which are richly sprinkled with gemmy, cherry-red, micro shigaite crystals. This piece comes from a small recent find and is highly representative of both species.