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Mixed Minerals

Sunday, 28 June 2020 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including azurite, bismuth, cerussite, chalcophyllite, elbaite, and ferberite and more from places like Cap Garonne mine, Le Pradet, Var, France, Schneeberg dist., Erzgebirge, Saxony, Germany, Wanlock Dod, Leadhills, South Lanarkshire, Scotland, Piesky, Špania Dolina, Banská Bystrica, Slovakia, Mount Mica quarry, Paris, Oxford Co., Maine, United States, and Tungsten mine, Boulder Co., Colorado, United States.

Azurite

with Olivenite - #AH53567
Locality
Cap Garonne mine, Le Pradet, Var, France 
Formula
Cu3(CO3)2(OH)2 
Availability
Available
Price
$35.00
Size
5.5 x 5 x 3 cm - Sm Cabinet 
Tagged
carbonate , copper  

Tiny 1mm or less blue rosettes of Azurite with green acicular crystals of Olivenite.


Azurite

Formula
Cu3(CO3)2(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Tabular, Prismatic, Stalactitic 
Cleavage
Perfect, Fair, None 
Luster
Vitreous (Glassy) 
Color
azure blue, blue, light blue, dark blue 
Streak
light blue 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Arnold G Hampson Collection
Mineralpedia
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Previously Sold Azurite
On Dakota Matrix
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Bismuth

with Safflorite - #BC52641
Locality
Schneeberg dist., Erzgebirge, Saxony, Germany 
Formula
Bi 
Availability
Available
Price
$225.00
Size
6.5 x 5 x 3 cm - Sm Cabinet 
Tagged
native element  

Brassy colored Bismuth crystals to 19mm embedded in dull, silvery Safflorite matrix.


Bismuth

Formula
Bi 
Crystal System
Trigonal 
Crystal Habit
Platy, Lamellar, Granular 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
silver white, pinkish white, red 
Streak
silver white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Uneven 
Hardness
2-2.5 
Collection
Barbara Cureton Collection
Mineralpedia
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Previously Sold Bismuth
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Cerussite

#BC52643
Locality
Wanlock Dod, Leadhills, South Lanarkshire, Scotland 
Formula
PbCO3 
Availability
Available
Price
$275.00
Size
11 x 6 x 5.5 cm - Cabinet 
Tagged
carbonate  

A great old time specimen with white Cerussite crystals to 15mm in a large vug rimmed by yellow Pyromorphite(?). 


Cerussite

Formula
PbCO3 
Crystal System
Orthorhombic 
Crystal Habit
Reticulate, Massive - Granular, Crystalline - Coarse 
Cleavage
Distinct, Distinct, None 
Luster
Adamantine 
Color
colorless, white, gray, blue, green 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3-3.5 
Collection
Barbara Cureton Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Cerussite
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Chalcophyllite

on Azurite - #AH53612
Locality
Piesky, Špania Dolina, Banská Bystrica, Slovakia 
Formula
Cu18Al2(AsO4)4(SO4)3(OH)24·36H2
Availability
Sold
Size
4.5 x 3 x 1 cm - Miniature 
Tagged
arsenate , copper  

Good Chalcophyllite crystals to less than 1mm with Azurite.


Chalcophyllite

Formula
Cu18Al2(AsO4)4(SO4)3(OH)24·36H2
Crystal System
Trigonal 
Crystal Habit
Platy, Tabular, Massive - Lamellar 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
emerald green, bluish green, grass green 
Streak
pale green 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Uneven 
Hardness
Collection
Arnold G Hampson Collection

Elbaite

tourmaline - #AH53588
Locality
Mount Mica quarry, Paris, Oxford Co., Maine, United States 
Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Availability
Sold
Size
8 x 5 x 4 cm - Sm Cabinet 
Tagged
pegmatite mineral  

Light to dark green prismatic crystals with some transparency and a prism length of 3 to 20mm. The largest crystal appears to be replaced at the center by fine grained Lepidolite.

Collected by Hampson in 1945.


Elbaite

Formula
Na(Al1.5Li1.5)Al6(BO3)3Si6O18(OH)4 
Crystal System
Trigonal 
Crystal Habit
Striated, Prismatic 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
blue, colorless, green, yellow, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Sub Conchoidal 
Hardness
7.5 
Collection
Arnold G Hampson Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Elbaite
On Dakota Matrix
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Mindat
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Ferberite

#AH53605
Locality
Tungsten mine, Boulder Co., Colorado, United States 
Formula
Fe2+WO4 
Availability
Available
Price
$65.00
Size
12 x 7 x 5 cm - Cabinet 

Large cabinet specimen of ore-grade black Ferberite with ill-defined crystals in tight clusters. It's a great representation of the ore fro this historic district.


Ferberite

Formula
Fe2+WO4 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Lamellar, Massive - Granular 
Cleavage
Perfect, Parting, Parting 
Luster
Sub Metallic 
Color
black 
Streak
brownish black 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
4.5 
Collection
Arnold G Hampson Collection
Mineralpedia
View Ferberite
On Dakota Matrix
Previously Sold Ferberite
On Dakota Matrix
Other Available Ferberite
WebMineral
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Mindat
View Ferberite

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