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Mixed Minerals

Sunday, 28 June 2020 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including kyanite, linarite, microcline, mottramite, parnauite, and phosphuranylite and more from places like American Cyanite Co., Prince Edward Co., Virginia, United States, Bingham dist., Socorro Co., New Mexico, United States, Gillette quarry, Middlesex Co., Connecticut, United States, Uvis mine, Namibia, Cap Garonne mine, Le Pradet, Var, France, and Pinhal do Souto mine, Tragos, Mangualde, Portugal.

Kyanite

#BC52640
Locality
American Cyanite Co., Prince Edward Co., Virginia, United States 
Formula
Al2OSiO4 
Availability
Sold
Size
12 x 8 x 2.5 cm - Cabinet 

Blue long bladed Kyanite crystals 1-3cm mostly oriented in the same direction, but with a few bucking the system. That must be a metamorphic thing yet unexplained by humankind.....just a cool piece. I do not know what the red is. The locality is on or near Baker Mtn.


Kyanite

Formula
Al2OSiO4 
Crystal System
Triclinic 
Crystal Habit
Columnar, Fibrous 
Cleavage
Perfect, Imperfect, None 
Luster
Vitreous - Pearly 
Color
blue, white, gray, green, black 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle 
Hardness
4-7 
Collection
Barbara Cureton Collection
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Previously Sold Kyanite
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Linarite

#AH53615
Locality
Bingham dist., Socorro Co., New Mexico, United States 
Formula
PbCuSO4(OH)2 
Availability
Sold
Size
5 x 4 x 2 cm - Miniature 
Tagged
copper  

Deep blue, lustrous Linarite crystals covering Quartz and Fluorite crystals.


Linarite

Formula
PbCuSO4(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Platy, Encrustations 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous (Glassy) 
Color
sky blue, deep blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
2.5 
Collection
Arnold G Hampson Collection
Mineralpedia
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Microcline

in Quartz - #AH53594
Locality
Gillette quarry, Middlesex Co., Connecticut, United States 
Formula
KAlSi3O8 
Availability
Available
Price
$35.00
Size
5.5 x 3.5 x 3.5 cm - Sm Cabinet 

A stuborn subject as it would not stay focused! The Microcline crystal (2cm) is stark white color with a complex faces and a green tourmaline crystals to 7mm alongside in slightly smoky Quartz.

Collected in 1945 by Hampson.


Microcline

Formula
KAlSi3O8 
Crystal System
Triclinic 
Crystal Habit
Blocky, Crystalline - Coarse, Prismatic 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
bluish green, green, gray, grayish yellow, yellowish 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection

Mottramite

var. psittacinite with Descloizite - #BC52618
Locality
Uvis mine, Namibia 
Formula
PbCuVO4(OH) 
Availability
Available
Price
$195.00
Size
9 x 6 x 5 cm - Sm Cabinet 
Tagged
copper , vanadium  

Grass green Mottramite, a variety called "psittacinite" with black Descloizite in matrix. 


Mottramite

Formula
PbCuVO4(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Plumose, Radial, Encrustations 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
brown, brown red, brownish black, green, dark green 
Streak
light brownish green 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5 
Collection
Barbara Cureton Collection

Parnauite

with Cornwallite - #AH53573
Locality
Cap Garonne mine, Le Pradet, Var, France 
Formula
Cu9(AsO4)2(SO4)(OH)10·7H2
Availability
Sold
Size
3.5 x 1.5 x 1.5 cm - Miniature 
Tagged
arsenate , copper  

Dark green glossy, beaded, Cornwallite on green Parnauite.


Parnauite

Formula
Cu9(AsO4)2(SO4)(OH)10·7H2
Crystal System
Orthorhombic 
Crystal Habit
Rosette, Scaly, Encrustations 
Cleavage
Good, None, None 
Color
blue green, green, light blue 
Streak
greenish white 
Class
Orthorhombic - Disphenoidal 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
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Phosphuranylite

with Uranophane - #BN47447
Locality
Pinhal do Souto mine, Tragos, Mangualde, Portugal 
Formula
KCa(H3O)3(UO2)7(PO4)4O4·8H2
Availability
Sold
Size
1 x 0.8 x 0.7 cm - Thumbnail 
Tagged
phosphate  
Special Info
Radioactive!! 

Small 1cm specimen with beautiful sprays of light yellow Uranophane with golden yellow plates of Phosphuranylite.


Phosphuranylite

Formula
KCa(H3O)3(UO2)7(PO4)4O4·8H2
Crystal System
Orthorhombic 
Crystal Habit
Encrustations, Prismatic 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Pearly 
Color
golden yellow, dark yellow, lemon 
Streak
light yellow 
Class
Orthorhombic - Dipyramidal 
Hardness
2.5 
Collection
Dr. Buford Nichols Collection
Special Info
Radioactive!!

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