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Recently Released New Additions

Rare for Sale!

Friday, 07 April 2023 06:00 PM

Introducing the "Rare for Sale!" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including kamotoite-(y), pyroaurite, strengite, and uranophane and more from places like Kamoto East mine, Kolwezi, Katanga, Democratic Republic of Congo, Långban, Filipstad, Värmland, Sweden, Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo, and Musonoi mine, Kolwezi, Shaba Cu belt, DR of Congo.

Kamotoite-(Y) - BAC60581.1
Kamotoite-(Y) - BAC60581.1

Kamotoite-(Y)

#BAC60581.1
Locality
Kamoto East mine, Kolwezi, Katanga, Democratic Republic of Congo 
Formula
Y2O4(UO2)4(CO3)3·14H2O 
Availability
Available
Price
$250.00
Size
3 x 0.8 x 1.8 cm - Thumbnail 
Tagged
carbonate , REE mineral  
Special Info
Radioactive!! 
Special Info
Type Locality 

Excellent specimen of Kamotoite-(Y) in radiating yellow crystals. See prov. tab for Paul de Bondt label.


Kamotoite-(Y)

Formula
Y2O4(UO2)4(CO3)3·14H2O 
Crystal System
Monoclinic 
Crystal Habit
Encrustations 
Cleavage
Good, Distinct, None 
Luster
Vitreous (Glassy) 
Color
yellow, bright yellow 
Class
Monoclinic - Prismatic 
Hardness
- 
Collection
William & Anne Cook Collection
Special Info
Radioactive!!
Special Info
Type Locality
Kamotoite-(Y) - BAC60581.1
Mineralpedia
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On Dakota Matrix
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Pyroaurite - BAC61431
Pyroaurite - BAC61431

Pyroaurite

#BAC61431
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Mg6Fe3+2CO3(OH)16·4H2O 
Availability
Available
Price
$75.00
Size
7 x 4.5 x 1 cm - Sm Cabinet 
Tagged
carbonate  

Golden micaceous thin crystal plates measuring 1-5mm on front and back.


Pyroaurite

Formula
Mg6Fe3+2CO3(OH)16·4H2O 
Crystal System
Trigonal 
Crystal Habit
Tabular, Fibrous 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
brownish yellow, brown white, colorless, greenish, yellowish white 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Flexible 
Hardness
2.5 
Collection
William & Anne Cook Collection
Mineralpedia
View Pyroaurite
On Dakota Matrix
Previously Sold Pyroaurite
On Dakota Matrix
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WebMineral
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Mindat
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Strengite - 61425
Strengite - 61425

Strengite

with Bermanite - #61425
Locality
Kobokobo Pegmatite, Sud-Kivu, Democratic Republic of Congo 
Formula
Fe3+PO4·2H2O 
Availability
Available
Price
$75.00
Size
6 x 4 x 4 cm - Sm Cabinet 
Tagged
phosphate , pegmatite mineral  

Granular purple Strengite with deep rusty red very microscopic Bermanite.


Strengite

Formula
Fe3+PO4·2H2O 
Crystal System
Orthorhombic 
Crystal Habit
Spherical, Radial, Botryoidal 
Cleavage
Good, Poor, None 
Luster
Vitreous (Glassy) 
Color
colorless, pale violet, deep violet, red, carmine red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5 
Mineralpedia
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On Dakota Matrix
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Uranophane - 61420
Uranophane - 61420

Uranophane

#61420
Locality
Musonoi mine, Kolwezi, Shaba Cu belt, DR of Congo 
Formula
Ca(UO2)2(SiO3OH)2·5H2O 
Availability
Available
Price
$225.00
Size
3.8 x 3 x 2.3 cm - Miniature 

Excellent, large crystals of Uranophane to 4mm. Very rich specimen with a bold yellow color in an open seam the length of the specimen.


Uranophane

Formula
Ca(UO2)2SiO3(OH)2*5(H2O) 
Crystal System
Monoclinic 
Crystal Habit
Radial, Earthy, Massive - Fibrous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
yellow, yellow brown, yellow green, yellow orange, light yellow 
Streak
yellowish white 
Class
Monoclinic - Sphenoidal 
Fracture
Uneven 
Hardness
2.5 
Mineralpedia
View Uranophane
On Dakota Matrix
Previously Sold Uranophane
On Dakota Matrix
Other Available Uranophane
WebMineral
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Mindat
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