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Fornacite On Todorokite With Hemimorphite & Fluorite

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Fornacite On Todorokite With Hemimorphite & Fluorite

Rare Mineral

Description Tabs

Description
Locality: 
Sounion Mine #6, Agia Varvara, Sounion, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 2.5 cm
Description

Rare olive green fornacite crystals on contrasting black to grey todorokite matrix

Mineral Data
What's on the rock

Fornacite

Formula: 
Pb2Cu(CrO4)(AsO4)(OH)
Strunz: 
7.FC.10
Hardness: 
2.0 - 3.0
Type Locality: 
Renéville Mine (Djoué Mines), Renéville, Kindanba District, Pool Department, Republic of Congo (Brazzaville)

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

Hemimorphite

Formula: 
Zn4Si2O7(OH)2·H2O
Strunz: 
9.BD.10
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Băiţa Mining District (Baita Bihor; Rézbánya), Nucet, Bihor Co., Romania

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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