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1 item @ $40.00  

Mixed Minerals

Sunday, 09 June 2024 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including durangite, pyrochlore, quartz, sperrylite, and wodginite and more from places like Thomas Range, Juab Co., Utah, United States, Samiresy, Tritriva, Betafo, Vakinankaratra, Madagascar, Gobobsed Mtns., Brandberg, Erongo, Namibia, Vermillion mine, Sudbury, Ontario, Canada, and Itatiaia mine, Conselheiro Pena, Minas Gerais, Brazil.

Durangite

#63329
Locality
Thomas Range, Juab Co., Utah, United States 
Formula
NaAlAsO4
Availability
Available
Price
$125.00
Size
2 x 1.7 x 0.4 cm - Thumbnail 
Tagged
arsenate  

Crude red crystals across face. Durangite is rare worldwide and found only in six or seven localities.


Durangite

Formula
NaAlAsO4
Crystal System
Monoclinic 
Cleavage
Indistinct, Distinct, None 
Luster
Vitreous (Glassy) 
Color
light yellow, dark green, orange red, red 
Streak
yellow 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
5.5 
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Pyrochlore

var. urano - #BAC64212
Locality
Samiresy, Tritriva, Betafo, Vakinankaratra, Madagascar 
Formula
A2-mD2X6-w Z1-n 
Availability
Available
Price
$25.00
Size
0.8 x 0.6 x 0.5 cm - Thumbnail 

A subhedral complete crystal.


Pyrochlore

Formula
(Na,Ca)2Nb2O6(OH,F) 
Crystal System
Isometric 
Crystal Habit
Granular, Disseminated 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Resinous - Greasy 
Color
brown, yellowish brown, yellow, greenish brown, reddish brown 
Streak
yellowish brown 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
5-5.5 

Quartz

var. amethyst sceptor - #63378
Locality
Gobobsed Mtns., Brandberg, Erongo, Namibia 
Formula
SiO2 
Availability
Available
Price
$275.00
Size
6 x 3 x 3 cm - Sm Cabinet 

A beautiful color zoned scepter Quartz crystal with purple to smoky colors. 


Quartz

Formula
SiO2 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Druse, Crystalline - Fine 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, violet, gray, yellow 
Streak
white 
Class
Trigonal - Trapezohedral 
Fracture
Conchoidal 
Hardness
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Sperrylite

#64221
Locality
Vermillion mine, Sudbury, Ontario, Canada 
Formula
PtAs2 
Availability
Available
Price
$35.00
Size
5 x 4 x 3 cm - Miniature 

Type locality Sperrylite. Not a crystal, just a broken silvery white crystal grain to 1mm.


Sperrylite

Formula
PtAs2 
Crystal System
Isometric 
Crystal Habit
Disseminated, Crystalline - Fine 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
tin white 
Streak
black 
Class
Isometric - Diploidal 
Fracture
Conchoidal 
Hardness
6-7 

Wodginite

#64208
Locality
Itatiaia mine, Conselheiro Pena, Minas Gerais, Brazil 
Formula
Mn2+Sn4+Ta2O8 
Availability
Available
Price
$150.00
Size
2 x 1.7 x 1.2 cm - Thumbnail 
Tagged
pegmatite mineral  

Excellent flattened dipyramidal crystal showing six good faces.


Wodginite

Formula
Mn2+Sn4+Ta2O8 
Crystal System
Monoclinic 
Crystal Habit
Pyramidal, Prismatic, Massive - Granular 
Cleavage
None, None, None 
Luster
Sub Metallic 
Color
dark brown, reddish brown, black, black brown 
Streak
brown 
Class
Monoclinic - Prismatic 
Fracture
Irregular 
Hardness
5.5 
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