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1 item @ $125.00  

Mixed Minerals

Friday, 10 September 2021 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including baryte, calcite, descloizite, duftite, fluorapatite, and gormanite and more from places like San Francisco mine, Sonora, Mexico, Camp Verde, Yavapai Co., Arizona, United States, Berg Aukus, Grootfontein dist., Namibia, Tsumeb mine, Tsumeb, Namibia, Siglo Veinte mine, Llallagua, Bolivia, and Big Fish River, Dawson dist., Yukon Territory, Canada.

Baryte

with Wulfenite - #BC52689
Locality
San Francisco mine, Sonora, Mexico 
Formula
BaSO4 
Availability
Sold
Size
6.5 x 4.5 x 4 cm - Sm Cabinet 

You generally do not see much of the Baryte from this mine. These groups are 2cm across and are light or faint blue in color. They are perched nicely on a Wulfenite and Mimetite matrix.


Baryte

Formula
BaSO4 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Prismatic, Massive - Fibrous 
Cleavage
Perfect, Perfect, Imperfect 
Luster
Vitreous (Glassy) 
Color
white, yellowish white, grayish white, brownish white, dark brown 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
3-3.5 
Collection
Barbara Cureton Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Baryte
On Dakota Matrix
Other Available Baryte
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Mindat
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Calcite

ps after Glauberite - #AH56462
Locality
Camp Verde, Yavapai Co., Arizona, United States 
Formula
CaCO3 
Availability
Available
Price
$175.00
Size
10 x 6 x 6 cm - Cabinet 
Tagged
carbonate  

Calcite pseudomorph after Glauberite with sharp, excellent, crystals with some of the best preserved forms I have seen of these specimens. Usually these are broken or scuffed up, but not this specimen. It is nearly perfect with no damage at all. It was purchased by Hampson in 1967.


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
Collection
Arnold G Hampson Collection
Mineralpedia
View Calcite
On Dakota Matrix
Previously Sold Calcite
On Dakota Matrix
Other Available Calcite
WebMineral
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Mindat
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Descloizite

#AH56463
Locality
Berg Aukus, Grootfontein dist., Namibia 
Formula
PbZnVO4(OH) 
Availability
Available
Price
$95.00
Size
7 x 6 x 7.5 cm - Sm Cabinet 
Tagged
vanadium  

It is hard to see in the photos, but this specimen is hollow through the center. It is much like a crown full of black, very lustrous, 1-3mm Descloizite crystals. 


Descloizite

Formula
PbZnVO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Plumose, Tabular, Encrustations 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
dark brownish black, dark reddish brown, orange red, reddish brown, black 
Streak
light brownish green 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Arnold G Hampson Collection

Duftite

with Cerussite - #PD56457
Locality
Tsumeb mine, Tsumeb, Namibia 
Formula
PbCuAsO4(OH) 
Availability
Available
Price
$45.00
Size
3 x 2.5 x 2 cm - Thumbnail 
Tagged
arsenate , copper  

Little, less than 0.5mm, individual Duftite crystals in patches amongst nice, clear Cerussite crystals to 1.3cm.


Duftite

Formula
PbCuAsO4(OH) 
Mineralpedia
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On Dakota Matrix
Previously Sold Duftite
On Dakota Matrix
Other Available Duftite
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Mindat
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Fluorapatite

#WR55791
Locality
Siglo Veinte mine, Llallagua, Bolivia 
Formula
Ca5(PO4)3
Availability
Sold
Size
1.5 x 1.5 x 1 cm - Thumbnail 
Tagged
phosphate  

Water clear excellent short and doubly terminated Fluorapatite. The terminations are complex and show 2nd and thrid order faces.


Fluorapatite

Formula
Ca5(PO4)3
Crystal System
Hexagonal 
Crystal Habit
Massive - Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Resinous 
Color
blue, brown, colorless, violet, green 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Willard L. Roberts Collection

Gormanite

#56455
Locality
Big Fish River, Dawson dist., Yukon Territory, Canada 
Formula
Fe2+3Al4(PO4)4(OH)6·2H2
Availability
Sold
Size
5.5 x 3.5 x 4 cm - Sm Cabinet 
Tagged
phosphate  
Special Info
Type Locality 

Dark bluish-green bladed crystals in thick divergent groups. Interesting mineral in that it looks fibrous, but the crystals are very brittle. Gormanite like other phosphates of Rapid & Big Creek are low-temperature fracture filling deposits.


Gormanite

Formula
Fe2+3Al4(PO4)4(OH)6·2H2
Crystal System
Triclinic 
Crystal Habit
Radial, Aggregates, Bladed 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
blue green 
Streak
pale green 
Class
Triclinic 
Hardness
4-5 
Collection
Don Phillips Collection
Special Info
Type Locality
Mineralpedia
View Gormanite
On Dakota Matrix
Previously Sold Gormanite
On Dakota Matrix
Other Available Gormanite
WebMineral
View Gormanite
Mindat
View Gormanite

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