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Mixed Minerals

Friday, 05 April 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 hocartite, joseite, natrolite, and sklodowskite and more from places like Oploca mine, Pirquitas, Rinconada Dept., Jujuy, Argentina, Wolfram Camp, Tablelands, Queensland, Australia, Big Rock quarry, Little Rock, Pulaski Co., Arkansas, United States, and Animas mine, Francisco Portillo, Santa Eulalia dist., Chihuahua, Mexico.

Hocartite

#50429
Locality
Oploca mine, Pirquitas, Rinconada Dept., Jujuy, Argentina 
Formula
Ag2FeSnS4 
Availability
Available
Price
$85.00
Size
3.3 x 2 x 0.8 cm - Miniature 
Tagged
tin , silver  

Hocartite is a tin sulfide with silver. This is a sawed specimen and has been tested according to Dr. Jaroslav Hrysl. There are no crystals on the specimen, only masses of silvery segregated areas in Pyrite.


Hocartite

Formula
Ag2FeSnS4 
Crystal System
Tetragonal 
Luster
Metallic 
Color
brownish gray 
Class
Tetragonal - Scalenohedral 
Hardness

Joseite

with Ikunolite - #50422
Locality
Wolfram Camp, Tablelands, Queensland, Australia 
Formula
Bi4TeS2 
Availability
Available
Price
$50.00
Size
0.5 x 0.4 x 0.1 cm - Thumbnail 

Thin silvery plate of Joseite/Ikunolite.


Joseite

Formula
Bi4(S,Te)3 
Crystal System
Trigonal 
Luster
Metallic 
Color
gray, grayish black 
Class
Trigonal - Hexagonal Scalenohedral 
Hardness
On Dakota Matrix
Previously Sold Joseite
On Dakota Matrix
Other Available Joseite
WebMineral
View Joseite
Mindat
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Natrolite

with Aegerine - #46116
Locality
Big Rock quarry, Little Rock, Pulaski Co., Arkansas, United States 
Formula
Na2(Si3Al2)O10·2H2
Availability
Available
Price
$95.00
Size
10 x 5 x 5 cm - Cabinet 

Awesome specimen with incredible sprays of Natrolite crystals to 6mm on and with colorless to white Analcime. Excellent specimen.


Natrolite

Formula
Na2(Si3Al2)O10·2H2
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Prismatic, Nodular 
Cleavage
Perfect, Imperfect, None 
Luster
Vitreous - Silky 
Color
white, colorless, red, yellowish white, reddish white 
Streak
white 
Class
Orthorhombic - Pyramidal 
Fracture
Brittle 
Hardness
5.5-6 
Collection
Don Owens Collection
Mineralpedia
View Natrolite
On Dakota Matrix
Previously Sold Natrolite
On Dakota Matrix
Other Available Natrolite
WebMineral
View Natrolite
Mindat
View Natrolite

Sklodowskite

in Gypsum - #50625
Locality
Animas mine, Francisco Portillo, Santa Eulalia dist., Chihuahua, Mexico 
Formula
Mg(UO2)2(SiO3OH)2·6H2
Availability
Available
Price
$175.00
Size
5.5 x 4.5 x 2 cm - Sm Cabinet 

Yellow Sklodowskite included in Gypsum.


Sklodowskite

Formula
Mg(UO2)2(SiO3OH)2·6H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
greenish yellow, light yellow 
Streak
yellow white 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2-3 

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