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Mixed Minerals

Sunday, 24 July 2022 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including bornite, calcite, chenevixite, chrysocolla, crocoite, and davidite-(la) and more from places like Tomboy mine, Savage Basin, Telluride dist., Colorado, United States, Mariposa mine, Terlingua dist., Brewster Co., Texas, United States, Wheal Gorland, St. Day dist., Cornwall, England, Inca de Oro, Atacama Region, Chile, Berezovskoe Au dep., Berezovskii, Sverdlovskaya Oblast', Urals, Russia, and Radium Hill, South Australia, Australia.

Bornite

with Chalcopyrite - #AH58904
Locality
Tomboy mine, Savage Basin, Telluride dist., Colorado, United States 
Formula
Cu5FeS4 
Availability
Sold
Size
8 x 6.5 x 6 cm - Sm Cabinet 
Tagged
sulfide , copper  

An all sulfide specimen with dark blue Bornite, iridescent Chalcopyrite, Galena, and Sphalerite.


Bornite

Formula
Cu5FeS4 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Reniform, Granular 
Cleavage
Imperfect, None, None 
Luster
Metallic 
Color
copper red, bronze brown, purple 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Bornite
On Dakota Matrix
Previously Sold Bornite
On Dakota Matrix
Other Available Bornite
WebMineral
View Bornite
Mindat
View Bornite

Calcite

#52538
Locality
Mariposa mine, Terlingua dist., Brewster Co., Texas, United States 
Formula
CaCO3 
Availability
Available
Price
$60.00
Size
5.5 x 4.5 x 2 cm - Sm Cabinet 
Tagged
carbonate  

Orange scalenohedral crystals of sharply terminated Calcite.


Calcite

Formula
CaCO3 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Stalactitic, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
colorless, white, pink, yellow, brown 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
Mineralpedia
View Calcite
On Dakota Matrix
Previously Sold Calcite
On Dakota Matrix
Other Available Calcite
WebMineral
View Calcite
Mindat
View Calcite

Chenevixite

#BW58852
Locality
Wheal Gorland, St. Day dist., Cornwall, England 
Formula
Cu(Fe3+,Al)(AsO4)(OH)2 
Availability
Sold
Size
6 x 4 x 5 cm - Sm Cabinet 
Tagged
arsenate , copper  
Special Info
Type Locality 

Rich, grass green massive to finely crystalline Chenevixite from the type locality. Excellent specimen.


Chenevixite

Formula
Cu(Fe3+,Al)(AsO4)(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Cryptocrystalline, Massive, Compact 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
yellow green, dark green, olive green 
Streak
greenish yellow 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Bill Wilson Collection
Special Info
Type Locality

Chrysocolla

#58857
Locality
Inca de Oro, Atacama Region, Chile 
Formula
(Cu,Al)2H2Si2O5(OH)4·nH2
Availability
Sold
Size
3 x 2 x 2.5 cm - Thumbnail 
Tagged
copper  

Chrysocolla massses and tiny crystals in vug.


Chrysocolla

Formula
(Cu,Al)2H2Si2O5(OH)4·nH2
Crystal System
Orthorhombic 
Crystal Habit
Botryoidal, Earthy, Stalactitic 
Cleavage
None, None, None 
Luster
Vitreous - Dull 
Color
green, bluish green, blue, blackish blue, brown 
Streak
light green 
Class
Orthorhombic 
Fracture
Brittle - Sectile 
Hardness
2.5-3.5 

Crocoite

#58853
Locality
Berezovskoe Au dep., Berezovskii, Sverdlovskaya Oblast', Urals, Russia 
Formula
PbCrO4 
Availability
Sold
Size
4 x 3.5 x 3.5 cm - Miniature 

Red, prismatitc crystals of Crocoite to 1cm. One crystal is nicely terminated.


Crocoite

Formula
PbCrO4 
Crystal System
Monoclinic 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Acicular 
Cleavage
Distinct, Indistinct, Indistinct 
Luster
Adamantine 
Color
yellow, orange, red, red orange 
Streak
yellowish orange 
Class
Monoclinic - Prismatic 
Fracture
Sectile 
Hardness
2.5-3 
Collection
Don Cooke Collection
Mineralpedia
View Crocoite
On Dakota Matrix
Previously Sold Crocoite
On Dakota Matrix
Other Available Crocoite
WebMineral
View Crocoite
Mindat
View Crocoite

Davidite-(La)

with Carnotite - #BW58834
Locality
Radium Hill, South Australia, Australia 
Formula
La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 
Availability
Sold
Size
6 x 4.5 x 3.5 cm - Sm Cabinet 
Tagged
REE mineral , vanadium  
Special Info
Radioactive!! 
Special Info
Type Locality 

A solid black, metamict mass of Davidite-(La) with a vitreous to greasy luster, There are several areas with scales of yellow Carnotite. Excellent specimen.


Davidite-(La)

Formula
La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 
Crystal System
Trigonal 
Crystal Habit
Massive, Anhedral Grains, Metamict 
Cleavage
None, None, None 
Luster
Vitreous - Metallic 
Color
black, grayish black, brownish black, dark brown, reddish 
Streak
brownish black 
Class
Trigonal - Rhombohedral 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Bill Wilson Collection
Special Info
Radioactive!!
Special Info
Type Locality

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