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Geocronite & Plagionite

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CR767822

Geocronite & Plagionite

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Description
Locality: 
Mina Casualidad, Baños de Alhamilla, Almería, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.4 × 1 cm
Description

Geocronite and Plagionite are rare Lead-Antimony Sulfosalts.

This good specimen comes form a recently published location in Spain where a very limited number of specimens could be found between 1998 and 2009. It shows beautiful sharp geocronite crystals and a small group of semicircle plagionite crystals on matrix.

Specimen was XRD and electrone microprobe analyzed.

The recently published paper about the location is available for the buyer on request.

 

Mineral Data
What's on the rock

Geocronite

Formula: 
Pb14(Sb,As)6S23
Strunz: 
2.JB.30a
Hardness: 
2.5 - 3.0
Type Locality: 
Sala Silver Mine, Sala, Västmanland, Sweden

Plagionite

Formula: 
Pb5Sb8S17
Strunz: 
2.HC.10b
Hardness: 
2.5
Type Locality: 
Graf Jost-Christian Mine, Wolfsberg, Stolberg, Harz, Saxony-Anhalt, Germany