Formula: (Mg,Mn)5(Ba,Sr,Ca)(PO4)4.8H2O
Origin of name: for Ol'ga Rimskaya-Korsakova, Russian mineralogist
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: yellow-brown to light pink
Diaphaneity: transparent to translucent
Luster: vitreous
Habit: as pseudohexagonal prismatic crystals to 0.02 by 0.03 by 0.07 mm, as fibrous pseudomorphs of bobierrite, as crusts
Hardness: 3
Specific gravity: 2.67
Cleavage: 1; {001} perfect
Tenacity:
Streak: white
Synonyms/varieties:
Comments: soluble in 10% HCl
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