mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Micromounts

Friday, 30 June 2023 01:30 PM

Introducing the "Micromounts" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including stephanite, tellurite, torbernite, vanadinite, and vesuvianite and more from places like Freiberg dist., Erzgebirge, Saxony, Germany, Cobalt dist., Ontario, Canada, Moctezuma, Sonora, Mexico, - Portugal, Chalk Mountain mine, Churchill Co., Nevada, United States, and Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada.

Stephanite

#61801
Locality
Freiberg dist., Erzgebirge, Saxony, Germany 
Formula
Ag5SbS4 
Availability
Sold
Size
Micromount 
Tagged
sulfide , silver  

Highly reflective, silvery Stephanite crystals. Overall 10 x 5mm.


Stephanite

Formula
Ag5SbS4 
Crystal System
Orthorhombic 
Crystal Habit
Pseudo Hexagonal, Tabular, Massive 
Cleavage
Imperfect, Poor, None 
Luster
Metallic 
Color
lead gray, black 
Streak
black 
Class
Orthorhombic - Pyramidal 
Fracture
Sub Conchoidal 
Hardness
2-2.5 

Stephanite

with Silver - #61823
Locality
Cobalt dist., Ontario, Canada 
Formula
Ag5SbS4 
Availability
Sold
Size
Micromount 
Tagged
sulfide , silver  

The Stephanite crystals are rosette-like across the specimen with wire Silver.


Stephanite

Formula
Ag5SbS4 
Crystal System
Orthorhombic 
Crystal Habit
Pseudo Hexagonal, Tabular, Massive 
Cleavage
Imperfect, Poor, None 
Luster
Metallic 
Color
lead gray, black 
Streak
black 
Class
Orthorhombic - Pyramidal 
Fracture
Sub Conchoidal 
Hardness
2-2.5 

Tellurite

#61902
Locality
Moctezuma, Sonora, Mexico 
Formula
TeO2 
Availability
Sold
Size
Micromount 
Tagged
x 1.7cm.  

Orange crystals in a group to 5mm. Overall 2 x 1.5cm.


Tellurite

Formula
TeO2 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Prismatic 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
yellow orange, white, straw yellow 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Flexible 
Hardness
Mineralpedia
View Tellurite
On Dakota Matrix
Previously Sold Tellurite
On Dakota Matrix
Other Available Tellurite
WebMineral
View Tellurite
Mindat
View Tellurite

Torbernite

#61810
Locality
- Portugal 
Formula
Cu(UO2)2(PO4)2·12H2
Availability
Sold
Size
Micromount 
Tagged
phosphate , copper  

It's hard to get a more perfect crystal as this one. On edge it measures 3.5mm.


Torbernite

Formula
Cu(UO2)2(PO4)2·12H2
Crystal System
Tetragonal 
Crystal Habit
Tabular, Earthy, Foliated 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous - Pearly 
Color
green, grass green, leek green, apple green, siskin green 
Streak
pale green 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle 
Hardness
2-2.5 

Vanadinite

on Descloizite - #61900
Locality
Chalk Mountain mine, Churchill Co., Nevada, United States 
Formula
Pb5(VO4)3Cl 
Availability
Sold
Size
Micromount 
Tagged
vanadinite  

Silvery clusters of Vanadinite, variety endlichite, from 1 to 2mm on orange Descloizite.


Vanadinite

Formula
Pb5(VO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Globular, Prismatic, Nodular 
Cleavage
None, None, None 
Luster
Adamantine 
Color
brown, brownish yellow, brown red, colorless, yellow 
Streak
brownish yellow 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 

Vesuvianite

#61897
Locality
Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada 
Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Availability
Sold
Size
Micromount 

Beautiful pink to reddish purple, glassy crystal 1.8cm long.


Vesuvianite

Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Crystal System
Tetragonal 
Crystal Habit
Massive, Columnar, Granular 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous - Resinous 
Color
blue, brown, green, yellow, white 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
6.5 

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2024 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map