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Tinnunculite

About

A naturally occurring dihydrate of uricite (uric acid) to which it is visually very similar.

Well-known though rare component of urinary and other stones (a biomineral).

Type Locality
Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia
Mineral Data
C5H4N4O3·2H2O
Physical Properties
Colour: 
colorless, white, yellowish, reddish or раlе lilас
Crystal System: 
Monoclinic
Tenacity: 
Brittle
Synonyms
Synonyms: 
IMA2015-021a, UM1993-32-CH:NO and Unnamed (Uric Acid Dihydrate)