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Mixed Minerals

Sunday, 29 November 2020 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including arthurite, becquerelite, dugganite, kuksite, lindbergite, and owyheeite and more from places like Majuba Hill mine, Pershing Co., Nevada, United States, Happy Jack mine, White Canyon, San Juan Co., Utah, United States, Black Pine mine, Philipsburg, Granite Co., Montana, United States, Boca Rica mine, Sapucaia, Galiléia, Minas Gerais, Brazil, and Morey dist., Nye Co., Nevada, United States.

Arthurite

#54646
Locality
Majuba Hill mine, Pershing Co., Nevada, United States 
Formula
CuFe3+2(AsO4)2(OH)2·4H2
Availability
Sold
Size
6 x 3.5 x 3 cm - Sm Cabinet 
Tagged
arsenate , copper  

Green sprays of Arthurite to 1mm scattered on matrix.


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 
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Becquerelite

#AH54674
Locality
Happy Jack mine, White Canyon, San Juan Co., Utah, United States 
Formula
Ca(UO2)6O4(OH)6·8H2
Availability
Available
Price
$250.00
Size
7.5 x 4.5 x 2 cm - Sm Cabinet 
Special Info
Radioactive!! 

Just pulled these two out of a hidden flat from the Hampson collection. This specimen is rich in bright yellow, glassy Becquerelite crystals to 1.5mm. There is also covarage in the backside.


Becquerelite

Formula
Ca(UO2)6O4(OH)6·8H2
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Fine 
Cleavage
Perfect, Perfect, None 
Luster
Resinous 
Color
brownish yellow, golden yellow, orange, lemon 
Streak
yellow 
Class
Orthorhombic - Pyramidal 
Hardness
2.5 
Collection
Arnold G Hampson Collection
Special Info
Radioactive!!

Dugganite

with Quartz twin, Olivenite - #54683
Locality
Black Pine mine, Philipsburg, Granite Co., Montana, United States 
Formula
Pb3Zn3(TeO6)(AsO4)2 
Availability
Available
Price
$295.00
Size
4.5 x 4.5 x 3 cm - Miniature 
Tagged
arsenate , tellurium  
Special Info
EDS Confirmed 

A very aesthetic specimen with rare minerals and Japan law Quartz twin (1.1cm). The Dugganite crystals are fantastic and are white to colorless, some with purple zoning. Most of the green is Malachite and Pseudomalachite. Great piece!


Dugganite

Formula
Pb3Zn3(TeO6)(AsO4)2 
Crystal System
Hexagonal 
Cleavage
Indistinct, None, None 
Luster
Adamantine 
Color
colorless, green, white 
Streak
white 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle 
Hardness
Special Info
EDS Confirmed
Mineralpedia
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On Dakota Matrix
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Kuksite

with Philipsburgite and Pseudomalachite - #54681
Locality
Black Pine mine, Philipsburg, Granite Co., Montana, United States 
Formula
Pb3Zn3Te6+O6(PO4)2 
Availability
Available
Price
$195.00
Size
4 x 2 x 2.5 cm - Miniature 
Tagged
phosphate , tellurium  
Special Info
EDS Confirmed 

Excellent pearly white rosettes on Quartz with green rosettes of Philipsburgite, prismatic Brochantite and lighter green Pseudomalachite.


Kuksite

Formula
Pb3Zn3Te6+O6(PO4)2 
Crystal System
Orthorhombic 
Crystal Habit
Tabular 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
gray 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
Special Info
EDS Confirmed
Mineralpedia
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Lindbergite

with Strengite - #BN54664
Locality
Boca Rica mine, Sapucaia, Galiléia, Minas Gerais, Brazil 
Formula
MnC2O4·2H2
Availability
Sold
Size
2 x 2 x 1 cm - Thumbnail 
Tagged
pegmatite mineral  

At least three white "spots" from 0.5 to 1mm of Lindbergite. The purple is Strengite and the golden brown in Frondelite.


Lindbergite

Formula
MnC2O4·2H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Pseudomorphous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white, grayish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Friable 
Hardness
2.5 
Collection
Dr. Buford Nichols Collection

Owyheeite

with Rhodochrosite - #46206
Locality
Morey dist., Nye Co., Nevada, United States 
Formula
Ag3Pb10Sb11S28 
Availability
Available
Price
$75.00
Size
4 x 4 x 3.5 cm - Miniature 
Tagged
sulfide , silver  

Very nice acicular crystals of Owyheeite, some with a slight curvature down the length of the crystal. The longest seems to be over 1mm and some of the crystals are altered to a white substance, but most are the typical grey. The pink are rhombic crystals of Rhodocrosite. Across most of the specimen are black or dark grey formless crystals of which are probably another silver mineral, perhaps Pyrargyrite, as some red reflections can be seen, Nice piece.


Owyheeite

Formula
Ag3Pb10Sb11S28 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Massive - Fibrous, Fibrous 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
lead gray, gray blue, yellowish, silver gray 
Streak
reddish brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
2.5 
Mineralpedia
View Owyheeite
On Dakota Matrix
Previously Sold Owyheeite
On Dakota Matrix
Other Available Owyheeite
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View Owyheeite
Mindat
View Owyheeite

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