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Manganoan Calcite

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SMS1040885

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.3 × 2.7 cm
Weight: 
45.79gr
Description

The specimen is a spheroidal formation of manganoan calcite intergrown with a second spheroid that serves as a base for the primary crystal. The large spheroidal form could be described as cauliform and is the result of rhombic crystal growth habit. It appears that the calcite has grown over gageite.

Mineral Data
What's on the rock

Manganoan Calcite

Variety Of: 

Calcite

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

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Start 08 Apr 18:00
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Postage Area Price
Europe up to 500 grams
$12
Europe up to 1 kilogram
$16
United States up to 500 grams
$14
United States up to 1 kilogram
$18
Rest of world up to 500 grams
$14
Rest of world up to 1 kilogram
$18

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