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Siderite

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PDM646817

Siderite

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Description
Locality: 
Siegen, North Rhine - Westphalia, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5.6 × 4.2 cm
Description

Saddle-like bent, brown "Braunspat" siderite crystals from "Nassau", a former Prussian province now part of Hesse. I’m told that the old included label is from Krantz (Bonn), made of parts of different Krantz labels, and can be dated back to a period of from ~1850 to 1920.

Ex. A. Gelders specimen #500.

Mineral Data
What's on the rock

Siderite

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

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