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0 item @ $0.00  

Mixed Minerals

Sunday, 09 May 2021 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including diopside, galena, harmotome, helvine, hydrocerussite, and kottigite and more from places like Orford Nickel mine, Estrie, Quebec, Canada, Treece, Cherokee Co., Kansas, United States, Bellsgrove mine, Strontian, Argyllshire, Scotland, 10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico, Torr Works quarry, Cranmore, Somerset, England, and Mina Ojuela, Mapimi, Durango, Mexico.

Diopside

#55726
Locality
Orford Nickel mine, Estrie, Quebec, Canada 
Formula
CaMgSi2O6 
Availability
Sold
Size
4.5 x 1.5 x 0.6 cm - Miniature 

Long tabular yellow-green crystal of Diopsite with each side terminated, except of the detachment poin at the base.


Diopside

Formula
CaMgSi2O6 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Blocky, Granular 
Cleavage
Good, Indistinct, None 
Luster
Vitreous (Glassy) 
Color
blue, brown, colorless, green, gray 
Streak
white green 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
Mineralpedia
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Previously Sold Diopside
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Mindat
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Galena

with Sphalerite - #BC52634
Locality
Treece, Cherokee Co., Kansas, United States 
Formula
PbS 
Availability
Available
Price
$175.00
Size
14 x 7 x 7 cm - Cabinet 
Tagged
sulfide  

A wonderful cabinet specimen from this old-time and classic American locality. The Galena octahedral with some skeletal growth features and are around 1.5cm each. The matrix is chert with black Sphalerite crysatls to 5mm.


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
Barbara Cureton Collection
Mineralpedia
View Galena
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Previously Sold Galena
On Dakota Matrix
Other Available Galena
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Mindat
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Harmotome

#BC52630
Locality
Bellsgrove mine, Strontian, Argyllshire, Scotland 
Formula
Ba2(Si12Al4)O32·12H2
Availability
Sold
Size
10.5 x 9 x 5.5 cm - Cabinet 

Excellent white, euhedral crystals to 8mm. Very nice piece, no damage.


Harmotome

Formula
Ba2(Si12Al4)O32·12H2
Crystal System
Monoclinic 
Crystal Habit
Twinning Common, Cruciform, Striated 
Cleavage
Good, Fair, None 
Luster
Vitreous (Glassy) 
Color
white, gray, yellow, red, brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
4-5 
Collection
Barbara Cureton Collection
Mineralpedia
View Harmotome
On Dakota Matrix
Previously Sold Harmotome
On Dakota Matrix
Other Available Harmotome
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Mindat
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Helvine

with Natanite on Ilvaite - #51639
Locality
10th level, Potosi mine, Santa Eulalia, Chihuahua, Mexico 
Formula
Mn2+4(BeSiO4)3
Availability
Sold
Size
6.5 x 5.5 x 2 cm - Sm Cabinet 

The second photo shows the Helvine crystals and these are about 1.5mm. On the flip side are excellent bright orange, octahedral Natanite crystals and there are several crystals less than 1mm. The matrix is mostly Ivaite and a few photos show the crystalline nature.


Helvine

On Dakota Matrix
Previously Sold Helvine
On Dakota Matrix
Other Available Helvine
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Mindat
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Hydrocerussite

#55721
Locality
Torr Works quarry, Cranmore, Somerset, England 
Formula
Pb3(CO3)2(OH)2 
Availability
Sold
Size
2 x 1.5 x 1 cm - Thumbnail 
Tagged
carbonate  

White pearly plates of Hydrocerussite.


Hydrocerussite

Formula
Pb3(CO3)2(OH)2 
Crystal System
Trigonal 
Crystal Habit
Platy 
Cleavage
Perfect, None, None 
Luster
Adamantine 
Color
colorless, gray, white 
Streak
white 
Class
Trigonal - Ditrigonal Pyramidal 
Fracture
Brittle 
Hardness
3.5 

Kottigite

with Gypsum - #55716
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
Zn3(AsO4)2·8H2
Availability
Sold
Size
4 x 3 x 1 cm - Miniature 
Tagged
arsenate  

Bluish grey lath-like crystals of Kottigite to 2mm on limonite with a large 2.5cm selenite on the flip side.


Kottigite

Formula
Zn3(AsO4)2·8H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Massive - Fibrous, Encrustations 
Luster
Silky 
Color
red, brownish 
Class
Monoclinic - Prismatic 
Hardness
2.5-3 
Mineralpedia
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On Dakota Matrix
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Mindat
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