Sinkankasite
A variety of Minerals
What is Sinkankasite?
Sinkankasite, mineral formula: H2MnAl(PO4)2(OH)·6H2O, was named after John Sinkankas (1915–2002), noted author and mineral collector, Scripps Institute of Oceanography. It is triclinic; as colorless, bladed to prismatic crystals up to 4 mm in length, often as divergent, radial aggregates and as pseudomorphs after triphlyte crystals; occurs in the Barker pegmatite (formerly Ferguson pegmatite), east of Keystone, South Dakota, and in the Palermo pegmatite, North Groton, New Hampshire.
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Sinkankasite Localities Map
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Quick Facts
Physical Properties
- Color
- Colourless
- Hardness (Mohs)
- 4
Chemical Properties
- Chemical Formula
- Mn2+Al(PO3OH)2(OH) · 6H2O
- Elements
- Al, H, Mn, O, P
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