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Mixed Minerals

Sunday, 25 July 2021 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including fluorite, galena, rosasite, and torbernite and more from places like Minerva #1 mine, Hardin Co., Illinois, United States, Madan dist, Rhodope Mts, Smolyan Oblast, Bulgaria, Mina Ojuela, Mapimi, Durango, Mexico, and Old Gunnislake mine, Gunnislake, Cornwall, England.

Fluorite

with Sphalerite - #AH56099
Locality
Minerva #1 mine, Hardin Co., Illinois, United States 
Formula
CaF2 
Availability
Available
Price
$45.00
Size
6 x 5 x 3.5 cm - Sm Cabinet 

It's hard to see in the photos, but the color of these crystals are an unusual bluish green. The largest crystal is 1.2cm and there are many smaller. The matrix is a deep root beer red. Coverage on the backside also.


Fluorite

Formula
CaF2 
Crystal System
Isometric 
Crystal Habit
Crystalline - Coarse, Massive - Granular, Disseminated 
Cleavage
Three perfect, octahedral cleavages. 
Luster
Vitreous (Glassy) 
Color
purple, clear, yellow, green, red, blue 
Streak
white 
Geological Setting
Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments  
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection
Mineralpedia
View Fluorite
On Dakota Matrix
Previously Sold Fluorite
On Dakota Matrix
Other Available Fluorite
WebMineral
View Fluorite
Mindat
View Fluorite

Galena

#AH56163
Locality
Madan dist, Rhodope Mts, Smolyan Oblast, Bulgaria 
Formula
PbS 
Availability
Available
Price
$50.00
Size
9 x 8 x 5.5 cm - Sm Cabinet 
Tagged
sulfide  

Sharp, splendent, Galena cubes to 8mm and smaller across matrix. 


Galena

Formula
PbS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
light lead gray, dark lead gray 
Streak
grayish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
View Galena
Mindat
View Galena

Rosasite

with Plattnerite - #56156
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
CuZnCO3(OH)2 
Availability
Available
Price
$30.00
Size
4.5 x 4 x 3.5 cm - Miniature 
Tagged
carbonate , copper  

Bluish green balls of Rosasite to 3mm with Plattnerite lining the vug.


Rosasite

Formula
CuZnCO3(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Spherical, Mammillary, Encrustations 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous - Silky 
Color
blue green, light blue, sky blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Splintery 
Hardness
Mineralpedia
View Rosasite
On Dakota Matrix
Previously Sold Rosasite
On Dakota Matrix
Other Available Rosasite
WebMineral
View Rosasite
Mindat
View Rosasite

Torbernite

with Cuprite - #56154
Locality
Old Gunnislake mine, Gunnislake, Cornwall, England 
Formula
Cu(UO2)2(PO4)2·12H2
Availability
Available
Price
$75.00
Size
4 x 3.5 x 3 cm - Miniature 
Tagged
phosphate , copper  
Special Info
Radioactive!! 

Green tablets of Torbernite crystals to 1mm with deep red Cuprite. Very nice specimen.


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 
Special Info
Radioactive!!

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