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Grossular Ferroan Calcite & Muscovite

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RAF507139

Grossular Ferroan Calcite & Muscovite

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
2 × 5 × 7 cm
Weight: 
76.00gr
Description

Grossular Ferroan with calcite and muscovite.  XRD Ananalysis Report will accompany specimen.

Mineral Data
What's on the rock

Grossular

Formula: 
Ca3Al2(SiO4)3
Strunz: 
9.AD.25
Hardness: 
6.5 - 7.0
Type Locality: 
Akhtaragda River mouth (Achtaragda River mouth), Vilyui River Basin (Vilui River Basin; Wilui River Basin), Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia

Ferroan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Fe)CO3
Hardness: 
0.0

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White
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