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Orthoclase With Todorokite & Hyalite

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LGM110359

Orthoclase With Todorokite & Hyalite

ex Ralf Wartha Collection, Windhoek

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Size Range: 
Cabinet (10-18 cm)
Size: 
14 × 4 × 3 cm
Largest Crystal: 
14.00cm
Description

A big elongated Orthoclase crystal with crusts of black todorokite and fluorescent hyalite. Undamaged!
Weight: 240 grams

Mineral Data
What's on the rock

Orthoclase

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0
Streak: 
White

Todorokite

Formula: 
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O
Strunz: 
4.DK.10
Hardness: 
1.5
Type Locality: 
Todoroki mine, Yoichi, Shiribeshi Province, Hokkaido, Japan

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white

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