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Köttigite & Parasymplesite

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ESM693327

Köttigite & Parasymplesite

Rare Mineral

Description Tabs

Description
Locality: 
Ojuela Mine, Mapimi, Durango, Mexico
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 2 × 0.7 cm
Description

Well developed crystals of intergrown köttigite & parasymplesite on limonite matrix

Mineral Data
What's on the rock

Köttigite

Formula: 
Zn3(AsO4)2·8H2O
Strunz: 
8.CE.40
Crystal System: 
Monoclinic Prismatic crystals or crusts
Hardness: 
2.5 - 3.0
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Parasymplesite

Formula: 
Fe2+3(AsO4)2·8H2O
Strunz: 
8.CE.40
Hardness: 
2.0
Type Locality: 
Kiura mine (Shin-Kiura mine; Kiura emery mine), Saiki City, Oita prefecture, Kyushu Region, Japan