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Mixed Minerals

Saturday, 05 May 2018 08:00 AM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including manganite, and quartz and more from places like Wolfe mine, Herdorf, Siegerland, Germany, and Tres Cerros de Santiño, Artigas dept., Uruguay.

Manganite

#RW48886
Locality
Wolfe mine, Herdorf, Siegerland, Germany 
Formula
Mn3+O(OH) 
Availability
Available
Price
$55.00
Size
7 x 3.5 x 4.5 cm - Sm Cabinet 

Solid Manganite specimen composed of 3-6mm compact, hackley looking lathes. This is a good specimen from this area known more for it's Rhodochrosite.


Manganite

Formula
Mn3+O(OH) 
Crystal System
Monoclinic 
Crystal Habit
Pseudo Orthorhombic, Massive - Fibrous, Prismatic 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
black, gray, grayish black 
Streak
dark brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
Collection
Robert J. Waidler Collection
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Quartz

var. amethyst - #RW49053
Locality
Tres Cerros de Santiño, Artigas dept., Uruguay 
Formula
SiO2 
Availability
Available
Price
$60.00
Size
9 x 8 x 3 cm - Sm Cabinet 

Deep purple layer of good 5-10mm Quartz crystals variety amethyst.


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
Collection
Robert J. Waidler Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Quartz
On Dakota Matrix
Other Available Quartz
WebMineral
View Quartz
Mindat
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