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Rare Minerals

Sunday, 15 January 2023 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including umohoite, uranospinite, and wurtzite and more from places like Rabejac mine, Le Puech, Herault, France, White King mine, Lake Co., Oregon, United States, and Agios Philippos mine, Kirki, near Alexandroupoli, Greece.

Umohoite

with Uranophane - #BAC60700
Locality
Rabejac mine, Le Puech, Herault, France 
Formula
(UO2)Mo6+O4·2H2
Availability
Sold
Size
4 x 4 x 2.5 cm - Miniature 

A stunning specimen under the scope with bright red radiating groups of Umohoite associated with yellow "pods" of Uranophane. Excellent, rare specimen.


Umohoite

Formula
(UO2)Mo6+O4·2H2
Crystal System
Triclinic 
Crystal Habit
Rosette, Tabular, Platy 
Cleavage
None, None, None 
Luster
Sub Metallic 
Color
bluish black, dark green, black 
Streak
blue gray 
Class
Triclinic - Pinacoidal 
Hardness
Collection
William & Anne Cook Collection
Mineralpedia
View Umohoite
On Dakota Matrix
Previously Sold Umohoite
On Dakota Matrix
Other Available Umohoite
WebMineral
View Umohoite
Mindat
View Umohoite
SOLD
Uranospinite - BAC60708
Uranospinite - BAC60708

Uranospinite

#BAC60708
Locality
White King mine, Lake Co., Oregon, United States 
Formula
Ca(UO2)2(AsO4)2·10H2
Availability
Sold
Size
1.3 x 1 x 1 cm - Thumbnail 
Tagged
arsenate  

Yellow scales.


Uranospinite

Formula
Ca(UO2)2(AsO4)2·10H2
Crystal System
Orthorhombic 
Crystal Habit
Platy, Aggregates 
Cleavage
Perfect, Distinct, None 
Luster
Pearly 
Color
siskin green, lemon yellow, yellow green 
Streak
light yellow 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
2-3 
Collection
William & Anne Cook Collection

Wurtzite

with Galena ps after Jordanite - #BAC60557
Locality
Agios Philippos mine, Kirki, near Alexandroupoli, Greece 
Formula
ZnS 
Availability
Available
Price
$375.00
Size
4.5 x 3 x 2.5 cm - Miniature 
Tagged
sulfide  

Stunning red pyramidal Wurtzite crystals to about 0.5mm with shiny silvery Jordinite crystals to 1mm replaced by Galena. Superb specimen originating from Dr. Jaroslav Hrysl, a highly respected and well-known mineral and author of "Minerals and their Localities".


Wurtzite

Formula
ZnS 
Crystal System
Hexagonal 
Crystal Habit
Radial, Tabular, Colloform 
Cleavage
Good, Good, None 
Luster
Adamantine - Resinous 
Color
brownish black, orange brown, reddish brown, black 
Streak
light brown 
Class
Hexagonal - Dihexagonal Pyramidal 
Fracture
Uneven 
Hardness
3.5-4 
Collection
William & Anne Cook Collection
Mineralpedia
View Wurtzite
On Dakota Matrix
Previously Sold Wurtzite
On Dakota Matrix
Other Available Wurtzite
WebMineral
View Wurtzite
Mindat
View Wurtzite

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