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Jamesonite with Sphalerite, Fluorite

#PD30440R
SOLD
Jamesonite from Wheal Boys, Port Isaac, St. Endellion, Cornwall, England - PD30440R
Jamesonite from Wheal Boys, Port Isaac, St. Endellion, Cornwall, England - PD30440R

Jamesonite with Sphalerite, Fluorite

#PD30440R
Availability
Sold
Size
5 x 4 x 2.5 cm - Miniature 
Formula
Pb4FeSb6S14 (RRUFF)
Locality
Wheal Boys, Port Isaac, St. Endellion, Cornwall, England

Really a nice miniature with excellent Jamesonite crystals in a 1.5 x 1cm area with black 5mm Sphalerite crystals and faint green Fluorite crystals to 6mm (neither of these are mentioned on the label). The labels are older, one from Paris and the other from the Jack Rodekohr collection. Rodekohr was one of the founding members of the Mineralogical Society of Southern California. The label matches the specimen number. Given the fact that is a antimony sulfosalt it may indeed have come from Wheal Boys, a mine rich in antimony.

Jamesonite

Formula
Pb4FeSb6S14 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Radial, Massive - Fibrous 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
lead gray, steel gray, dark lead gray 
Streak
black. grayish 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2.5 

Data courtesy of Webmineral.

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