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0 item @ $0.00  

Mixed Rare Minerals

Saturday, 07 May 2022 12:00 PM

Introducing the "Mixed Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including kolwezite, kottenheimite, macedonite, magnesiopascoite, mimetite, and paratellurite and more from places like Musonoi mine, Kolwezi, Shaba Cu belt, DR of Congo, Graulay quarry, Hillesheim, Eifel, Rhineland-Palatinate, Germany, Långban, Filipstad, Värmland, Sweden, Packrat mine, Gateway, Mesa Co., Colorado, United States, Dry Gill mine, Caldbeck Fells, Cumbria, England, and Klondike mine, Saguache Co., Colorado, United States.

Kolwezite

with cobaltoan Calcite - #BW58107
Locality
Musonoi mine, Kolwezi, Shaba Cu belt, DR of Congo 
Formula
CuCoCO3(OH)2 
Availability
Sold
Size
5 x 5 x 3.5 cm - Miniature 
Tagged
carbonate , copper  
Special Info
Type Locality 

A 7mm dull green fuzzy-looking Kolwezite ball at the center of an open vug lined with cobaltoan Calcite. Kolwezite is a fairly rare carbonate and this is the type locality.


Kolwezite

Formula
CuCoCO3(OH)2 
Crystal System
Triclinic 
Crystal Habit
Nodular, Encrustations 
Luster
Vitreous (Glassy) 
Color
beige brown, green, black 
Streak
beige 
Class
Triclinic 
Hardness
Collection
RC Stamberg Collection
Special Info
Type Locality
Mineralpedia
View Kolwezite
On Dakota Matrix
Previously Sold Kolwezite
On Dakota Matrix
Other Available Kolwezite
WebMineral
View Kolwezite
Mindat
View Kolwezite

Kottenheimite

#57787
Locality
Graulay quarry, Hillesheim, Eifel, Rhineland-Palatinate, Germany 
Formula
Ca3Si(SO4)2(OH)6 · 12H2
Availability
Sold
Size
1.5 x 1.3 x 1 cm - Thumbnail 
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

Kottenheimite is a rare calc-silicate mineral which occurs in three localities worldwide. This locality would be the fourth, perhaps not published yet. It originated from Dr. Igor Pekov and verified. The crystals are random white acicular and very minute, less than 1mm.


Special Info
XRD Confirmed
Special Info
EDS Confirmed

Macedonite

#PD58204
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
PbTiO3 
Availability
Sold
Size
1.3 x 1.2 x 0.7 cm - Thumbnail 

Bright orange crystal grains to 1mm throughout mass. Macedonite is a rare lead-titanium oxide.


Macedonite

Formula
PbTiO3 
Crystal System
Tetragonal 
Crystal Habit
Prismatic 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
black 
Streak
yellow gray 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Brittle 
Hardness
5.5-6 
Collection
Don Phillips Collection

Magnesiopascoite

#57721
Locality
Packrat mine, Gateway, Mesa Co., Colorado, United States 
Formula
Ca2MgV5+10O28·16H2
Availability
Sold
Size
2.5 x 2 x 1.5 cm - Thumbnail 
Tagged
vanadium  

Flaming orange crystals of rare Magnesiopascoite across face.


Magnesiopascoite

Formula
Ca2MgV5+10O28·16H2
Crystal System
Monoclinic 
Crystal Habit
Blocky, Prismatic 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
bright orange 
Streak
yellow 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
2.5 

Mimetite

var. campylite - #57823
Locality
Dry Gill mine, Caldbeck Fells, Cumbria, England 
Formula
Pb5(AsO4)3Cl 
Availability
Available
Price
$75.00
Size
5.5 x 3 x 3 cm - Sm Cabinet 
Tagged
arsenate  

Burnt orange curled hexagonal crystyals to 2mm across face. Nice piece!


Mimetite

Formula
Pb5(AsO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Reniform, Globular, Prismatic 
Cleavage
Imperfect, None, None 
Luster
Adamantine - Resinous 
Color
white, yellow, orange, brown, red 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Mineralpedia
View Mimetite
On Dakota Matrix
Previously Sold Mimetite
On Dakota Matrix
Other Available Mimetite
WebMineral
View Mimetite
Mindat
View Mimetite

Paratellurite

#RS58428
Locality
Klondike mine, Saguache Co., Colorado, United States 
Formula
TeO2 
Availability
Sold
Size
3 x 2.5 x 2 cm - Thumbnail 
Tagged
tellurium  

Green yellowish crustations of Paratellurite. Rich.


Paratellurite

Formula
TeO2 
Crystal System
Tetragonal 
Luster
Resinous 
Color
grayish white 
Streak
white 
Class
Tetragonal - Trapezohedral 
Hardness
Collection
RC Stamberg Collection

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