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Mixed Minerals

Sunday, 05 January 2020 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including bornite, elbaite, fluorite, gerhardtite, and gold and more from places like Campbell Shaft, Bisbee, Cochise Co., Arizona, United States, Leonard mine, Butte dist., Silver Bow Co., Montana, United States, Himalaya mine, San Diego Co., California, United States, Frunthorn, Vals Valley, Grischun, Switzerland, Daisy Shaft, San Xavier, Pima Co., Arizona, United States, and Bessie G mine, La Plata Co., Colorado, United States.

Bornite

with Chalcopyrite - #RW52055
Locality
Campbell Shaft, Bisbee, Cochise Co., Arizona, United States 
Formula
Cu5FeS4 
Availability
Sold
Size
9.5 x 7 x 6 cm - Cabinet 
Tagged
sulfide , copper , ore specimen  

Iridescent blue and purple raw Bornite ore specimen. Some Chalcopyrite in association.


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
Robert J. Waidler Collection
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Bornite

with Chalcopyrite - #RW52060
Locality
Leonard mine, Butte dist., Silver Bow Co., Montana, United States 
Formula
Cu5FeS4 
Availability
Sold
Size
7 x 7 x 4 cm - Sm Cabinet 
Tagged
sulfide , copper , ore specimen  

Small chunk of greyish bluish Bornite with other sulfides.


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
Robert J. Waidler Collection
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Elbaite

tourmailne - #AH52087
Locality
Himalaya mine, San Diego Co., California, United States 
Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Availability
Available
Price
$295.00
Size
5 x 2.5 x 2.5 cm - Miniature 

Stubby pink tourmaline with deep striations and a thin blue cap terminations. It's not perfect, there are a few chips along the corners of the terminatio and it is dull not real lustrous. It's priced accordingly.


Elbaite

Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Crystal System
Trigonal 
Crystal Habit
Striated, Prismatic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
blue, colorless, green, yellow, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Sub Conchoidal 
Hardness
7.5 
Collection
Arnold G Hampson Collection
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SOLD
Fluorite - AH52067
Fluorite - AH52067

Fluorite

#AH52067
Locality
Frunthorn, Vals Valley, Grischun, Switzerland 
Formula
CaF2 
Availability
Sold
Size
1 x 0.9 x 1.2 cm - Thumbnail 

Set of red octahedral crystals - very clear and lustrous.


Fluorite

Formula
CaF2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Disseminated 
Cleavage
Three perfect, octahedral cleavages. 
Luster
Vitreous (Glassy) 
Color
purple, clear, yellow, green, red, blue 
Streak
white 
Geological Setting
Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection
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Gerhardtite

in Cuprite with Aurichalcite - #52092
Locality
Daisy Shaft, San Xavier, Pima Co., Arizona, United States 
Formula
Cu2NO3(OH)3 
Availability
Sold
Size
2.5 x 2 x 0.5 cm - Thumbnail 
Tagged
copper  

Blue, somewhat glassy crystal grains of Gerhardtite in Cuprite with Aurichalcite. The specimen is a slice, presumably made  for analysis during a published study made by Sid Williams. Collected in 1966.


Gerhardtite

Formula
Cu2NO3(OH)3 
Crystal System
Orthorhombic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
green, dark green 
Streak
light green 
Class
Orthorhombic - Disphenoidal 
Hardness

Gold

#AH52061
Locality
Bessie G mine, La Plata Co., Colorado, United States 
Formula
Au 
Availability
Sold
Size
2.5 x 2.5 x 2 cm - Thumbnail 
Tagged
native element  

Two wire golds to 2mm with several 1-2mm patches of leaf Gold. Self-collected by Arnold Hampson.


Gold

Formula
Au 
Crystal System
Isometric 
Crystal Habit
Arborescent, Platy, Granular 
Cleavage
None, None, None 
Luster
Metallic 
Color
yellow, pale yellow, orange, yellow white, reddish white 
Streak
yellow 
Class
Isometric - Hexoctahedral 
Fracture
Hackly 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection
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