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Ore Minerals

Thursday, 02 June 2022 08:00 AM

Introducing the "Ore Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including cassiterite, and skutterudite and more from places like Llallagua, Bolivia, and Rustex mine, Gowganda area, Timiskaming dist., Ontario, Canada.

Cassiterite

- tin ore - #RW58135
Locality
Llallagua, Bolivia 
Formula
SnO2 
Availability
Available
Price
$75.00
Size
8 x 6.5 x 4 cm - Sm Cabinet 
Tagged
ore specimen , tin  

The specimen is solid Cassiterite with several pseudo-octahedral dark brown crystals to 8mm. Cassiterite is the main ore of tin and contains up to 79% tin. Historically tin was used in tinplates for tin cans and in bronze, which contained about 9% tin. Modern uses of tin include electroplating steel, bronze wire and cable, bearings and bushings, gears, and screws since it is resistant to corrosion. It is non-toxic and thus used in food-processing equipment.

Llallagua is an important producer of tin ore, with moderate temperature sulfide veins containing Bi-Pb-Ag sulfide.


Cassiterite

Formula
SnO2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Massive, Botryoidal 
Cleavage
Perfect, Indistinct, None 
Luster
Adamantine 
Color
brown, brownish black, colorless, green, gray 
Streak
brownish white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Irregular 
Hardness
6-7 
Collection
Robert J. Waidler Collection

Skutterudite

- cobalt ore - #51274
Locality
Rustex mine, Gowganda area, Timiskaming dist., Ontario, Canada 
Formula
CoAs3-x 
Availability
Available
Price
$30.00
Size
6 x 4 x 3 cm - Sm Cabinet 
Tagged
sulfide , ore specimen  

Mass of grey, metallic Skutterudite, an ore of cobalt.


Skutterudite

Formula
CoAs3-x 
Crystal System
Isometric 
Crystal Habit
Granular, Colloform, Massive 
Cleavage
Distinct, Distinct, None 
Luster
Metallic 
Color
white, light steel gray 
Streak
black 
Class
Isometric - Diploidal 
Fracture
Brittle 
Hardness
5.5-6 

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