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Manjiroite & Todorokite

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SYA811309

Manjiroite & Todorokite

Classic Locality

Description Tabs

Description
Locality: 
Hotazel, Kalahari, Northern Cape Province, South Africa
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 1.8 cm
Description

Dark grey lamellar Manjiroite and Todorokite with pale yellow calcite.

Mineral Data
What's on the rock

Manjiroite

Formula: 
Na(Mn4+7Mn3+)O16
Strunz: 
4.DK.05a
Hardness: 
7.0
Type Locality: 
Kohare mine, Karumai, Iwate Prefecture, Tohoku Region, Honshu Island, Japan

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

Seller Information

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