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Lillianite & Challacolloite

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SMM931881

Lillianite & Challacolloite

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Description
Locality: 
La Fossa Crater, Vulcano Island, Messina Province, Sicily, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 2.5 cm
Description

Outstanding, so I can define this beautiful miniature, full for its quarter of glassy, yellow-gold crystals, of challacolloite, probably from La Fossa Crater come the best crystals known for this species, the other half of the sample is completely covered with a weft of prismatic crystals, gray-steel of lillianite, some quite large and clearly visible. There are white elongated crystals of pseudocotunnite and rounded galena grains.

 Fantastic!

Boxed with Label
Mineral Data
What's on the rock

Lillianite

Formula: 
Pb3-2xAgxBi2+xS6
Strunz: 
2.JB.40a
Crystal System: 
Orthorhombic
Hardness: 
2.0 - 3.0
Streak: 
Black
Type Locality: 
Lillian Mines, Printer Boy Hill, Leadville, Leadville District, Lake Co., Colorado, USA

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

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