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0 item @ $0.00  

Mixed Minerals

Friday, 28 June 2019 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including amblygonite, anatase, anorthoclase, arsenopyrite, arthurite, and berzelianite and more from places like Minas Gerais, Brazil, Hardangervidda, Norway, Wausau, Marathon Co., Wisconsin, United States, Mineral Hill mine, Crevasse dist., Park Co., Montana, United States, Majuba Hill mine, Pershing Co., Nevada, United States, and Skrikerum mine, Valdemarsvik, Östergötland, Sweden.

SOLD
Amblygonite - 50974
Amblygonite - 50974

Amblygonite

#50974
Locality
Minas Gerais, Brazil 
Formula
LiAlPO4
Availability
Sold
Size
4 x 3.5 x 2 cm - Miniature 
Tagged
phosphate , pegmatite mineral  

Yellow, translucent crystalline mass of rare yellow Amblygonite.


Amblygonite

Formula
LiAlPO4
Crystal System
Triclinic 
Crystal Habit
Columnar, Euhedral Crystals, Prismatic 
Cleavage
Perfect, Good, Distinct 
Luster
Vitreous - Pearly 
Color
white, yellow, gray, bluish gray, greenish gray 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness
5.5-6 

Anatase

#50960
Locality
Hardangervidda, Norway 
Formula
TiO2 
Availability
Sold
Size
1.5 x 1 x 1 cm - Thumbnail 

Sharply pointed cluster of deep blue lustrous Anatase crystals. 


Anatase

Formula
TiO2 
Crystal System
Tetragonal 
Crystal Habit
Pyramidal, Tabular 
Cleavage
Perfect, Distinct, None 
Luster
Adamantine - Resinous 
Color
black, reddish brown, yellowish brown, dark blue, gray 
Streak
pale yellowish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Conchoidal 
Hardness
5.5-6 
Mineralpedia
View Anatase
On Dakota Matrix
Previously Sold Anatase
On Dakota Matrix
Other Available Anatase
WebMineral
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Mindat
View Anatase

Anorthoclase

#50986
Locality
Wausau, Marathon Co., Wisconsin, United States 
Formula
(Na,K)AlSi3O8 
Availability
Available
Price
$45.00
Size
11 x 5 x 5 cm - Cabinet 

Cut on two sides and displays pretty good color plays. Please see https://wgnhs.uwex.edu/minerals/anorthoclase/ for more information.


Anorthoclase

Formula
(Na,K)AlSi3O8 
Crystal System
Triclinic 
Crystal Habit
Disseminated, Granular 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
colorless, green, gray, gray pink, yellow 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness

Arsenopyrite

in gold ore - #49098
Locality
Mineral Hill mine, Crevasse dist., Park Co., Montana, United States 
Formula
FeAsS 
Availability
Sold
Size
14 x 9 x 10 cm - Cabinet 
Tagged
ore mineral , sulfide  

Large, impressive chunk of Arsenopyrite in gold bearing ore. The polished end nicely shows the Arsenopyrite mineralization. The largest crystal in the mass is a whopping 8.5cm across! 


Arsenopyrite

Formula
FeAsS 
Crystal System
Monoclinic 
Crystal Habit
Striated, Euhedral Crystals, Prismatic 
Cleavage
one distinct 
Luster
Metallic 
Color
tin white, light steel gray 
Streak
black 
Geological Setting
Widespread. Most commonly found in medium to high temperature veins.  
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
5.5 to 6 
Collection
Chris van Laer Collection

Arthurite

with Pharmacosiderite - #50988
Locality
Majuba Hill mine, Pershing Co., Nevada, United States 
Formula
CuFe3+2(AsO4)2(OH)2·4H2
Availability
Sold
Size
3 x 2 x 1.5 cm - Thumbnail 
Tagged
arsenate , copper  

Lime green sprays of Arthurite with green Pharmacosiderite. 


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 
Mineralpedia
View Arthurite
On Dakota Matrix
Previously Sold Arthurite
On Dakota Matrix
Other Available Arthurite
WebMineral
View Arthurite
Mindat
View Arthurite

Berzelianite

in Calcite - #50981
Locality
Skrikerum mine, Valdemarsvik, Östergötland, Sweden 
Formula
Cu2-xSe (x~0.12) 
Availability
Sold
Size
4 x 3 x 1 cm - Miniature 
Tagged
copper  

Black inclusions of rare Berzelianite in Calcite matrix.


Berzelianite

Formula
Cu2-xSe (x~0.12) 
Crystal System
Isometric 
Crystal Habit
Dendritic, Disseminated, Massive 
Cleavage
None, None, None 
Luster
Metallic 
Color
bluish gray, gray, black 
Streak
shining 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness

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