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Fluorapatite Todorokite Psm Rhodochrosite

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MGR817909

Fluorapatite Todorokite Psm Rhodochrosite

Classic Locality

Description Tabs

Description
Locality: 
Golconda Mine, Golconda, Coroaci, Minas Gerais, Brazil
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.6 × 2.5 cm
Description

Todorokite is a more rare Mn oxide named by the type-locality (Todoroki Mine in Japan) - it replaced a group of rhodochrosite and on it three isolated, razor sharp and highly lustrous apatite crystals in light lavender color. A rare and aesthetic combination in excellent quality.

Mineral Data
What's on the rock

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

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

Rhodochrosite

Formula: 
MnCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania