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Manganoan Calcite On Orlymanite

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RAF722686

Manganoan Calcite On Orlymanite

Type Locality

Description Tabs

Description
Locality: 
NChwaning III Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 5.7 × 4 cm
Largest Crystal: 
3.50cm
Weight: 
241.00gr
Description

A fabulous Manganoan Calcite on Orlymanite specimen from the N'Chwaning III Mine. This is a beautiful specimen with three big crystals.  Orlymanite is a type mineral, and only found in these mines.   Very Rare. nice Fluorescent.

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

Orlymanite

Formula: 
Ca4Mn3Si8O20(OH)6·2H2O
Strunz: 
9.EE.30
Crystal System: 
Trigonal
Hardness: 
4.0 - 5.0
Type Locality: 
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese field, Northern Cape Province, South Africa...