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Freibergite Siderite & Quartz

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SCH69554

Freibergite Siderite & Quartz

Ex. Folch collection

Description Tabs

Description
Locality: 
Hiendelaencina, Guadalajara, Castilla La Mancha, Spain
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 1.8 × 2 cm
Description

A shiny freibergite crystal is set in a quartz cavity. There are several cavities with possibly other crystals as there are many partial ones scattered over matrix.

Ex. Folch collection, it was collected in May 1950 and has a copy of the handwritten label with other labels as well.

Mineral Data
What's on the rock

Freibergite

Formula: 
Ag6[Cu4Fe2]Sb4S13-x
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0
Colour: 
Grey
Type Locality: 
Reiche Zeche Mine, Himmelfahrt Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany

Siderite

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
schani

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