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Limonite Var Glaskopf & Siderite

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ESM823630

Limonite Var Glaskopf & Siderite

Description Tabs

Description
Locality: 
Neuenbürg District, Neuenbürg, Karlsruhe Region, Baden-Württemberg, Germany
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 4 × 4 cm
Description

Lustrous black botryoidal limonite with brown siderite crystals on matrix

Mineral Data
What's on the rock

Glaskopf

Variety Of: 

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Hardness: 
5.0 - 5.5

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White