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Recently Released New Additions

Rare Mineral Species

Monday, 25 November 2024 06:00 PM

Introducing the "Rare Mineral Species" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including arthurite, childrenite, and vysotskite and more from places like Hingston Down quarry, Gunnislake, Cornwall, England, Crinnis mine, Carlyon Bay, Cornwall, England, and Minneapolis adit, J-M Reef, Stillwater Co., Montana, United States.

Arthurite - BN64925
Arthurite - BN64925

Arthurite

#BN64925
Locality
Hingston Down quarry, Gunnislake, Cornwall, England 
Formula
CuFe3+2(AsO4)2(OH)2·4H2O 
Availability
Available
Price
$30.00
Size
1.5 x 0.7 x 0.8 cm - Thumbnail 
Tagged
arsenate , copper  
Special Info
Type Locality 

Small but excellent specimen from the type locality.


Arthurite

Formula
CuFe3+2(AsO4)2(OH)2·4H2O 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Acicular, Spherical 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
apple green, emerald green 
Streak
light green 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
3-4 
Collection
Dr. Buford Nichols Collection
Special Info
Type Locality
Mineralpedia
View Arthurite
On Dakota Matrix
Previously Sold Arthurite
On Dakota Matrix
Other Available Arthurite
WebMineral
View Arthurite
Mindat
View Arthurite
Childrenite - BN64933
Childrenite - BN64933

Childrenite

#BN64933
Locality
Crinnis mine, Carlyon Bay, Cornwall, England 
Formula
Fe2+AlPO4(OH)2·H2O 
Availability
Available
Price
$35.00
Size
4 x 2.5 x 2 cm - Miniature 
Tagged
phosphate  

Colorless cone-shaped crystals to 1mm in fine-grained slate.


Childrenite

Formula
Fe2+AlPO4(OH)2·H2O 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Tabular, Platy 
Cleavage
Imperfect, None, None 
Luster
Vitreous - Resinous 
Color
white, yellowish brown, brownish black 
Streak
white 
Class
Orthorhombic - Pyramidal 
Fracture
Conchoidal - Uneven 
Hardness
4.5-5 
Collection
Dr. Buford Nichols Collection
Mineralpedia
View Childrenite
On Dakota Matrix
Previously Sold Childrenite
On Dakota Matrix
Other Available Childrenite
WebMineral
View Childrenite
Mindat
View Childrenite
Vysotskite - BAC64976
Vysotskite - BAC64976

Vysotskite

#BAC64976
Locality
Minneapolis adit, J-M Reef, Stillwater Co., Montana, United States 
Formula
(Pd,Ni)S 
Availability
Available
Price
$225.00
Size
1 x 0.6 x 0.4 cm - Thumbnail 
Tagged
sulfide , nickel  

This specimen has been microprobed and is cut and polished on both sides for identification. There is a white streak, which is the Vysotskite. The metallic goldish material is Chalcopyrite. Specimens are extremely rare, although there are many localities but scoping and analyses is very tedious.


Vysotskite

Formula
(Pd,Ni)S 
Crystal System
Tetragonal 
Crystal Habit
Irregular Grains 
Cleavage
None, None, None 
Luster
Metallic 
Color
silver gray 
Class
Tetragonal - Dipyramidal 
Hardness
1.5 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Vysotskite
On Dakota Matrix
Other Available Vysotskite
WebMineral
View Vysotskite
Mindat
View Vysotskite

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