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Ranciéite & Todorokite

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TPX800947

Ranciéite & Todorokite

Rare Mineral

Description Tabs

Description
Locality: 
El Conjuro Mines, Busquistar, Granada, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 3.4 × 2.6 cm
Weight: 
88.00gr
Description

Very interesting specimen of the rare rancieite and todorokite on matrix of goethite of this old Spanish nowadays exhausted. it's not common find specimens of todorokite in the market.

Mineral Data
What's on the rock

Ranciéite

Formula: 
(Ca,Mn)Mn4O9·3H2O
Strunz: 
4.FL.40
Crystal System: 
Hexagonal
Hardness: 
2.5 - 3.0
Type Locality: 
Le Rancié Mine, Sem, Vicdessos, Ariège, Midi-Pyrénées, France

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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