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Bismuthinite Challacolloite & Pseudocotunnite

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POL894251

Bismuthinite Challacolloite & Pseudocotunnite

Classic Locality

Description Tabs

Description
Locality: 
La Fossa Crater, Vulcano Island, Messina Province, Sicily, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.3 × 3.4 cm
Description

Very nice and rich specimen of metallic and iridiscent Bismuthinite crystals associated with some pale-yellow Challacolloite crystals and white microcrystalline Pseudocotunnite on matrix.

Specimen is not tested, presents of other Bi minerals like Galenobismutite or Lillianite are very possible. On this specimen can be seen crystals in form of needles and more platy ones.

Same case with Challacolloite, but isostructural Hephaistosite is extremely rare. Nevertheless, both species on this locality have also enrichment in Br.

This is classic example from famous La Fossa Crater on Vulcano Island (Italy).

More photos in "Labels" section.

 

Mineral Data
What's on the rock

Bismuthinite

Formula: 
Bi2S3
Strunz: 
2.DB.05
Hardness: 
2.0 - 2.5
Streak: 
Lead-gray

Challacolloite

Formula: 
KPb2Cl5
Strunz: 
3.AA.55
Hardness: 
2.0 - 3.0
Type Locality: 
Lolon Mine (Challacollo Mine), Challacollo, El Tamarugal Province, Tarapacá Region, Chile
Labels
Label Images - only: Bismuthinite Challacolloite & Pseudocotunnite
Label Images - only: Bismuthinite Challacolloite & Pseudocotunnite
Label Images - only: Bismuthinite Challacolloite & Pseudocotunnite
Label Images - only: Bismuthinite Challacolloite & Pseudocotunnite

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