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Hisingerite

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MNT134770

Hisingerite

ex Dr. A. Krantz (GER
Classic Locality

Description Tabs

Description
Locality: 
Breitenbrunn, Erzgebirge, Saxony, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.6 × 3.7 × 3 cm
Description

Old timer from the 19th century with attached label from August Krantz: It states polyhydrite as a variety of thraulite. Thraulit is a german synonym of hisingerite, a not so common silicate. Polyhydrite is described as an amorphous(?) aluminosilicate of Fe and minor Mn which was first reported from the St Cristoph Mine in Breitenbrunn, Erzgebirge, Germany. Its IMA status is questionable/doubtful. The specimen consist of a  brown mass on matrix.

Mineral Data
What's on the rock

Hisingerite

Formula: 
Fe3+2(Si2O5)(OH)4·2H2O
Strunz: 
9.ED.10
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Riddarhyttan, Skinnskatteberg, Västmanland, Sweden

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Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger