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Polydymite & Millerite

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Description Tabs

Description
Locality: 
Grüneau Mine, Schutzbach, Altenkirchen, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.9 × 1.7 cm
Description

Polydymite is a nickel sulfide mineral from the linneite group. Its name derives from the Greek words polys (many) and didymos (twin), referring to the very frequent twinning of its crystals. It forms gray-metallic crystals together with millerite.
 

Mineral Data
What's on the rock

Polydymite

Formula: 
Ni2+Ni3+2S4
Strunz: 
2.DA.05
Crystal System: 
Isometric
Hardness: 
4.5 - 5.5
Type Locality: 
Grüneau Mine (Grüne Au Mine; Grünau Mine), Schutzbach, Betzdorf, Siegerland, Rhineland-Palatinate, Germany

Millerite

Formula: 
NiS
Strunz: 
2.CC.20
Crystal System: 
Trigonal
Hardness: 
3.0 - 3.5
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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Start 26 Mar 18:00
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Shipping Information

Postage Area Price
Germany : Insured parcel < 2000g 6 €
6
Germany : Insured parcel > 2000g 9 €
9
International <500g 10 €
10
International > 500g < 1000g 18€
18
USA 12€
12
Worldwide < 5000g insured parcel 50€
50

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