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Hennomartinite & Sugilite

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ESM1003005

Hennomartinite & Sugilite

Description Tabs

Description
Locality: 
Wessels Mine, Hotazel, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1 × 1 cm
Description

Brown hennomartinite needels on purple sugilite

Mineral Data
What's on the rock

Hennomartinite

Formula: 
SrMn3+2(Si2O7)(OH)2·H2O
Strunz: 
9.BE.05
Crystal System: 
Orthorhombic
Hardness: 
4.0
Type Locality: 
Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese field, Northern Cape Province, South Africa...

Sugilite

Formula: 
K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
Strunz: 
9.CM.05
Crystal System: 
Hexagonal
Hardness: 
6.0 - 6.5
Type Locality: 
Iwagi Island, Inland Sea (Setonaikai), Ehime Prefecture, Japan