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Mixed Minerals

Sunday, 24 June 2018 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, covellite, forsterite, kolbeckite, metarossite, and nickeline and more from places like Morenci mine, Greenlee Co., Arizona, United States, Leonard mine, Butte dist., Silver Bow Co., Montana, United States, Jacupiranga mine, Cajati, São Paulo, Brazil, Christy dep., Magnet Cove, Hot Spring Co., Arkansas, United States, Arrowhead Claim, San Miguel Co., Colorado, United States, and Nipissing mine, Cobalt, Timiskaming dist., Ontario, Canada.

Azurite

with Malachite - #RW48696
Locality
Morenci mine, Greenlee Co., Arizona, United States 
Formula
Cu3(CO3)2(OH)2 
Availability
Available
Price
$65.00
Size
6.5 x 5 x 2.5 cm - Sm Cabinet 
Tagged
carbonate , copper  

3-7mm deep blue lustrous Azurite crystals intergrown with spherical groups of pastal green Malachite.


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
Robert J. Waidler Collection
Mineralpedia
View Azurite
On Dakota Matrix
Previously Sold Azurite
On Dakota Matrix
Other Available Azurite
WebMineral
View Azurite
Mindat
View Azurite

Covellite

#RW49220
Locality
Leonard mine, Butte dist., Silver Bow Co., Montana, United States 
Formula
CuS 
Availability
Available
Price
$125.00
Size
7 x 6 x 6 cm - Sm Cabinet 
Tagged
sulfide , copper  

An prominent 2-3cm vein of iridescent blue to purple Covellite in Pyrite and Kaolinite matrix. 


Covellite

Formula
CuS 
Crystal System
Hexagonal 
Crystal Habit
Platy, Foliated 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
indigo blue, light blue, dark blue, black 
Streak
black gray 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Brittle 
Hardness
1.5-2 
Collection
Robert J. Waidler Collection
Mineralpedia
View Covellite
On Dakota Matrix
Previously Sold Covellite
On Dakota Matrix
Other Available Covellite
WebMineral
View Covellite
Mindat
View Covellite

Forsterite

with Magnetite - #PD49223
Locality
Jacupiranga mine, Cajati, São Paulo, Brazil 
Formula
Mg2SiO4 
Availability
Available
Price
$75.00
Size
9 x 6 x 4 cm - Sm Cabinet 

Yellowish, dull, equant Forsterite to 2cm with dull black octahedral Magnetite to 2.5cm.


Forsterite

Formula
Mg2SiO4 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Fine, Tabular 
Cleavage
Good, Distinct, None 
Luster
Vitreous (Glassy) 
Color
colorless, green, yellow, yellow green, white 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
6-7 
Collection
Don Phillips Collection

Kolbeckite

#BN49244
Locality
Christy dep., Magnet Cove, Hot Spring Co., Arkansas, United States 
Formula
ScPO4·2H2
Availability
Available
Price
$125.00
Size
5 x 3.5 x 3 cm - Miniature 
Tagged
phosphate  

Very nice lemon yellow crystals of rare Kolbeckite to about 1mm as single crystals scattered on matrix. There are at least five good crystals, each shown in the photo's.


Kolbeckite

Formula
ScPO4·2H2
Crystal System
Monoclinic 
Crystal Habit
Spherical 
Cleavage
Good, Indistinct, Indistinct 
Luster
Vitreous - Pearly 
Color
blue gray, colorless, greenish white, yellowish, light blue 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Dr. Buford Nichols Collection

Metarossite

#49217
Locality
Arrowhead Claim, San Miguel Co., Colorado, United States 
Formula
CaV5+2O6·2H2
Availability
Available
Price
$250.00
Size
12 x 9 x 4 cm - Cabinet 
Tagged
vanadium  

Large, museum size and quality, specimen of rare bright yellow Metarossite. Excellent showy specimen.


Metarossite

Formula
CaV5+2O6·2H2
Crystal System
Triclinic 
Luster
Vitreous - Pearly 
Color
yellow 
Class
Triclinic - Pinacoidal 
Hardness
1-2 

Nickeline

#RW49224
Locality
Nipissing mine, Cobalt, Timiskaming dist., Ontario, Canada 
Formula
NiAs 
Availability
Available
Price
$125.00
Size
12 x 9 x 2.5 cm - Cabinet 
Tagged
nickel  

Large crystalline mass of brassy gold Nickeline. It is a cut flat on one side to show the many veinlets which have penetrated the original rock.


Nickeline

Formula
NiAs 
Crystal System
Hexagonal 
Crystal Habit
Massive, Reniform, Columnar 
Cleavage
Imperfect, Imperfect, None 
Luster
Metallic 
Color
lead gray, grayish, copper, black 
Streak
brownish black 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Uneven 
Hardness
5.5 
Collection
Robert J. Waidler Collection
Mineralpedia
View Nickeline
On Dakota Matrix
Previously Sold Nickeline
On Dakota Matrix
Other Available Nickeline
WebMineral
View Nickeline
Mindat
View Nickeline

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