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Mixed Minerals

Sunday, 26 June 2022 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including halite, kyanite, laumontite, lepidolite, loughlinite, and mimetite and more from places like Salton Sea, Imperial Co., California, United States, Balsam Gap Mine, Buncombe Co., North Carolina, United States, Pine Creek mine, Scheelite, Bishop dist., Inyo Co., California, United States, Ingersoll mine, Pennington Co., South Dakota, United States, Westvaco mine, Sweet Water Co., Wyoming, United States, and Mina Ojuela, Mapimi, Durango, Mexico.

Halite

#RS58716
Locality
Salton Sea, Imperial Co., California, United States 
Formula
NaCl 
Availability
Available
Price
$45.00
Size
7 x 9 x 2.5 cm - Sm Cabinet 

Colorless Halite crystals to 7mm with a little iron-staining. Look closely at the 5h photo. You can see that the crystals nucleated on wood sticks. 


Halite

Formula
NaCl 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Granular, Crystalline - Coarse 
Cleavage
Perfect, Perfect, Perfect 
Luster
Vitreous (Glassy) 
Color
white, clear, light blue, dark blue, pink 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Collection
RC Stamberg Collection
Mineralpedia
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Previously Sold Halite
On Dakota Matrix
Other Available Halite
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Kyanite

#RS58707
Locality
Balsam Gap Mine, Buncombe Co., North Carolina, United States 
Formula
Al2OSiO4 
Availability
Sold
Size
6 x 5.5 x 5 cm - Sm Cabinet 

Nice bladed blue Kyanite crystal measuring 5.5cm in length.


Kyanite

Formula
Al2OSiO4 
Crystal System
Triclinic 
Crystal Habit
Columnar, Fibrous 
Cleavage
Perfect, Imperfect, None 
Luster
Vitreous - Pearly 
Color
blue, white, gray, green, black 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle 
Hardness
4-7 
Collection
RC Stamberg Collection
Mineralpedia
View Kyanite
On Dakota Matrix
Previously Sold Kyanite
On Dakota Matrix
Other Available Kyanite
WebMineral
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Mindat
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Laumontite

#RS58708
Locality
Pine Creek mine, Scheelite, Bishop dist., Inyo Co., California, United States 
Formula
Ca(Si4Al2)O12·4H2
Availability
Sold
Size
7 x 3.5 x 3.5 cm - Sm Cabinet 

Yellowish brown prismatitc crystals of Laumontite. The longest crystal mesaures 7.5cm, while the other is 5.5cm. It is a sweet specimen with shows good "fishtail" twinning as seen in the second photo. Very good specimen.


Laumontite

Formula
Ca(Si4Al2)O12·4H2
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Crystalline - Fine, Bladed 
Cleavage
Perfect, Perfect, None 
Luster
Vitreous (Glassy) 
Color
brownish, gray, yellowish, pearl white, pink 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
RC Stamberg Collection

Lepidolite

#RS58713
Locality
Ingersoll mine, Pennington Co., South Dakota, United States 
Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Availability
Available
Price
$25.00
Size
6 x 4.5 x 3 cm - Sm Cabinet 

Granular purple Lepidolite from one of the most famous mines in the Black Hills. Lepidolite is an ore of lithium, one the hottest sought after ores in the world these days.


Lepidolite

Formula
K(Li,Al)3(Si,Al)4O10(F,OH)2 
Crystal System
Monoclinic 
Crystal Habit
Platy, Foliated, Massive 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
colorless, gray white, lilac, yellowish, white 
Streak
white 
Class
Monoclinic 
Fracture
Uneven 
Hardness
2.5-3 
Collection
RC Stamberg Collection

Loughlinite

#RS58734
Locality
Westvaco mine, Sweet Water Co., Wyoming, United States 
Formula
Na2Mg3Si6O16·8H2
Availability
Sold
Size
5 x 3 x 2.5 cm - Miniature 
Tagged
ore mineral  

White, silky and fibrous Loughlinite interlayered with Searlesite(?). The Westvaco mine is owned and operated by Ciner, the largest producer of soda ash in the world. Soda ash is used widley in many applications including building, automotive, home, cleaning, energy, beverage, food and glass, bakeware, industrial, water treatment, oil, and gas.


Loughlinite

Formula
Na2Mg3Si6O16·8H2
Crystal System
Orthorhombic 
Crystal Habit
Massive - Fibrous 
Luster
Silky 
Color
pearl white 
Streak
white 
Class
Orthorhombic 
Hardness
Collection
RC Stamberg Collection

Mimetite

with Wulfenite - #AH58751
Locality
Mina Ojuela, Mapimi, Durango, Mexico 
Formula
Pb5(AsO4)3Cl 
Availability
Sold
Size
8.5 x 5.5 x 3 cm - Sm Cabinet 
Tagged
arsenate  

There are two generations of Mimetite on this specimen which include green colloform crystals to 5mm and lighter yellow bow-tie crystals to 3mm. Amongst the Mimetite are yellow tabular Wulfenite crystals to 3mm.


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 
Collection
Arnold G Hampson Collection
Mineralpedia
View Mimetite
On Dakota Matrix
Previously Sold Mimetite
On Dakota Matrix
Other Available Mimetite
WebMineral
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Mindat
View Mimetite

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