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Rare & Mixed Minerals

Sunday, 31 July 2022 05:00 PM

Introducing the "Rare & Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including duftite, gold, joseite, and vanadinite and more from places like Brandy Gill mine, Caldbeck Fells, Cumbria, England, Harvard mine, Jamestown, Tuolumne Co., California, United States, Carrock mine, Caldbeck Fells, Cumbria, England, and Mammoth mine, Tiger, Pinal Co., Arizona, United States.

Duftite

#RS58922
Locality
Brandy Gill mine, Caldbeck Fells, Cumbria, England 
Formula
PbCuAsO4(OH) 
Availability
Available
Price
$45.00
Size
3.5 x 2 x 2 cm - Miniature 
Tagged
arsenate , copper  

Apple green Duftite crusts.


Duftite

Formula
PbCuAsO4(OH) 
Collection
RC Stamberg Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Duftite
On Dakota Matrix
Other Available Duftite
WebMineral
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Mindat
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Gold

#58807
Locality
Harvard mine, Jamestown, Tuolumne Co., California, United States 
Formula
Au 
Availability
Available
Price
$175.00
Size
3 x 1.3 x 1.8 cm - Thumbnail 
Tagged
native element  

A large Gold leaf to 1cm x 8mm on white Quartz.


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Mineralpedia
View Goldmanite
On Dakota Matrix
Previously Sold Gold
On Dakota Matrix
Other Available Gold
WebMineral
View Gold
Mindat
View Gold

Joseite

#RS58924
Locality
Carrock mine, Caldbeck Fells, Cumbria, England 
Formula
Bi4TeS2 
Availability
Available
Price
$75.00
Size
2.5 x 1.5 x 2.3 cm - Thumbnail 
Tagged
sulfide , tellurium  

Silvery, reflective like foil, crystals of Joseite. There are two good crystals 5 and 4mm in size.


Joseite

Formula
Bi4(S,Te)3 
Crystal System
Trigonal 
Luster
Metallic 
Color
gray, grayish black 
Class
Trigonal - Hexagonal Scalenohedral 
Hardness
Collection
RC Stamberg Collection
On Dakota Matrix
Previously Sold Joseite
On Dakota Matrix
Other Available Joseite
WebMineral
View Joseite
Mindat
View Joseite

Vanadinite

with Baryte - #AH58910
Locality
Mammoth mine, Tiger, Pinal Co., Arizona, United States 
Formula
Pb5(VO4)3Cl 
Availability
Available
Price
$55.00
Size
7 x 3 x 5 cm - Sm Cabinet 
Tagged
vanadium  

Tiny reddish orange prismatic crystals with hexagonal terminations to about 0.75mm with colorless and tabular Baryte crystals. The Vanadinite is somewhat color zoned. The last few photos are that of the Baryte. This is an interesting specimen of dissolved Galena which created the vugs to which the crystals have formed. There is also a green micaceous mineral, which is much like Sericite.


Vanadinite

Formula
Pb5(VO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Globular, Prismatic, Nodular 
Cleavage
None, None, None 
Luster
Adamantine 
Color
brown, brownish yellow, brown red, colorless, yellow 
Streak
brownish yellow 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection

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