Minerals identify

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Sinkankasite

Phosphate mineral

Sinkankasite, mineral formula: H 2MnAl(PO 4) 2(OH)·6H 2O, 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, North Groton, New Hampshire

Identification

Mohs scale ( mineral hardness )

4

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Triclinic