Rimkorolgite

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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