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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 amarillite, arthurite, bellingerite, boulangerite, chalcophyllite, and childrenite and more from places like Tierra Amarilla, Copiap� Province, Atacama, Chile, Hingston Down quarry, Gunnislake, Cornwall, England, Chuquicamata mine, El Loa Prov., Antofagasta, Chile, Vojtěch mine, Příbram, Central Bohemia, Czech Republic, Majuba Hill mine, Pershing Co., Nevada, United States, and Crinnis mine, Carlyon Bay, Cornwall, England.

Amarillite

#BAC64974
Locality
Tierra Amarilla, Copiap� Province, Atacama, Chile 
Formula
NaFe3+(SO4)2·6H2
Availability
Sold
Size
3 x 2.5 x 2.3 cm - Thumbnail 

Orange sugary mass.


Amarillite

Formula
NaFe3+(SO4)2·6H2
Crystal System
Monoclinic 
Cleavage
Good, None, None 
Luster
Vitreous - Adamantine 
Color
greenish yellow, light yellow 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2.5-3 
Collection
William & Anne Cook Collection

Arthurite

#BN64925
Locality
Hingston Down quarry, Gunnislake, Cornwall, England 
Formula
CuFe3+2(AsO4)2(OH)2·4H2
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)2·4H2
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

Bellingerite

#JD64942
Locality
Chuquicamata mine, El Loa Prov., Antofagasta, Chile 
Formula
Cu3(IO3)6·2H2
Availability
Sold
Size
3 x 2 x 1.5 cm - Thumbnail 
Tagged
copper  
Special Info
Type & Only Locality 

Bellingerite is a copper iodate and this specimen has glassy green crystals to 4mm. Excellent specimen. This is a one-locality mineral and very rare and hard to obtain.


Bellingerite

Formula
Cu3(IO3)6·2H2
Crystal System
Triclinic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
light green 
Streak
light green 
Class
Triclinic - Pinacoidal 
Fracture
Conchoidal 
Hardness
Collection
John Dagenais Collection
Special Info
Type & Only Locality

Boulangerite

with Calcite - #JD64843
Locality
Vojtěch mine, Příbram, Central Bohemia, Czech Republic 
Formula
Pb5Sb4S11 
Availability
Available
Price
$75.00
Size
6 x 5.5 x 4 cm - Sm Cabinet 
Tagged
sulfide  

Wire-like or filliform steel gray Boulangerite throughout mass with Calcite..


Boulangerite

Formula
Pb5Sb4S11 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Massive - Fibrous, Plumose 
Cleavage
Indistinct, Indistinct, None 
Luster
Metallic 
Color
lead gray, blue gray, gray 
Streak
reddish brown 
Class
Orthorhombic 
Fracture
Brittle 
Hardness
2.5 
Collection
John Dagenais Collection

Chalcophyllite

with Tyrolite - #JD64946
Locality
Majuba Hill mine, Pershing Co., Nevada, United States 
Formula
Cu18Al2(AsO4)4(SO4)3(OH)24·36H2
Availability
Sold
Size
6 x 3.5 x 2.5 cm - Sm Cabinet 
Tagged
arsenate , copper  

Green flashy crystal plates to 3mm across.


Chalcophyllite

Formula
Cu18Al2(AsO4)4(SO4)3(OH)24·36H2
Crystal System
Trigonal 
Crystal Habit
Platy, Tabular, Massive - Lamellar 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
emerald green, bluish green, grass green 
Streak
pale green 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Uneven 
Hardness
Collection
John Dagenais Collection

Childrenite

#BN64933
Locality
Crinnis mine, Carlyon Bay, Cornwall, England 
Formula
Fe2+AlPO4(OH)2·H2
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·H2
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

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