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0 item @ $0.00  

Mixed Minerals

Thursday, 07 February 2019 08:00 AM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including bermanite, chalcanthite, chalcophyllite, covellite, cuprite and more from places like Tip Top mine, Custer Co., South Dakota, United States, Majuba Hill mine, Pershing Co., Nevada, United States, Morenci mine, Greenlee Co., Arizona, United States, Milpillas Mine, Cuitaca, Sonora, Mexico.

Bermanite

with Leucophosphite & Jahnsite - #BN50207
Locality
Tip Top mine, Custer Co., South Dakota, United States 
Formula
Mn2+Mn3+2(PO4)2(OH)2·4H2
Availability
Sold
Size
8 x 6 x 4 cm - Sm Cabinet 
Tagged
phosphate , pegmatite mineral  

Deep dark red micro crystals of Bermanite with rich coverage in voids with micro Hureaulite and Jahnsite.


Bermanite

Formula
Mn2+Mn3+2(PO4)2(OH)2·4H2
Crystal System
Monoclinic 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Resinous 
Color
light red, dark reddish brown 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle 
Hardness
3.5 
Mineralpedia
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Chalcanthite

#50153
Locality
Majuba Hill mine, Pershing Co., Nevada, United States 
Formula
CuSO4·5H2
Availability
Available
Price
$40.00
Size
7 x 5 x 4 cm - Sm Cabinet 
Tagged
copper  

Rich, deep blue Chalcanthite "veins" to 1cm.


Chalcanthite

Formula
CuSO4·5H2
Crystal System
Triclinic 
Crystal Habit
Encrustations, Stalactitic, Reniform 
Cleavage
Imperfect, Indistinct, Indistinct 
Luster
Vitreous (Glassy) 
Color
green, green blue, light blue, dark blue 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Conchoidal 
Hardness
2.5 

Chalcophyllite

with Brochantite & Malachite - #50148
Locality
Majuba Hill mine, Pershing Co., Nevada, United States 
Formula
Cu18Al2(AsO4)4(SO4)3(OH)24·36H2
Availability
Sold
Size
7.5 x 5 x 7 cm - Sm Cabinet 
Tagged
arsenate , copper  

1-2mm blue, thin tabular and hexagonal Chalcophyllite crystals with Malachite, Chrysocolla, and others.


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

Covellite

#RW50202
Locality
Morenci mine, Greenlee Co., Arizona, United States 
Formula
CuS 
Availability
Sold
Size
10 x 5 x 6 cm - Cabinet 
Tagged
sulfide , copper  

Purple to bluish small plates of Covellite around 3-5mm throughout the specimen. 


Covellite

Formula
CuS 
Crystal System
Hexagonal 
Crystal Habit
Platy, Foliated 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
indigo blue, light blue, dark blue, black 
Streak
black gray 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle 
Hardness
1.5-2 
Collection
Robert J. Waidler Collection
Mineralpedia
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Cuprite

#50200
Locality
Milpillas Mine, Cuitaca, Sonora, Mexico 
Formula
Cu1+2
Availability
Sold
Size
6 x 4 x 4 cm - Sm Cabinet 
Tagged
copper  

Exceptional deep red, lustrous Cuprite crystals to 7mm.


Cuprite

Formula
Cu1+2
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Capillary 
Cleavage
Imperfect, None, None 
Luster
Adamantine 
Color
brown red, purple red, red, black 
Streak
brownish red 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Robert J. Waidler Collection
Mineralpedia
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Previously Sold Cuprite
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Cuprite

var. chalcotrichite - #BN50203
Locality
Morenci mine, Greenlee Co., Arizona, United States 
Formula
Cu1+2
Availability
Sold
Size
8 x 6 x 5 cm - Sm Cabinet 
Tagged
copper  

Bright red acicular crystals of Cuprite, variety chalcotrichite.


Cuprite

Formula
Cu1+2
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Capillary 
Cleavage
Imperfect, None, None 
Luster
Adamantine 
Color
brown red, purple red, red, black 
Streak
brownish red 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Dr. Buford Nichols Collection
Mineralpedia
View Cuprite
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Previously Sold Cuprite
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Mindat
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