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1 item @ $40.00  

Rare Minerals

Friday, 12 April 2024 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including idaite, inesite, maslovite, mckinstryite, quartz, and vanadinite and more from places like Cuchillo Negro dist., Sierra Cuchillo, Sierra Co., New Mexico, United States, Långban, Filipstad, Värmland, Sweden, Bushveld Complex, Limpopo prov., South Africa, Mogollon dist., Catron Co., New Mexico, United States, near Amatitlan, Guerrero, Mexico, and Touissit-Bou Beker dist., Jerada Prov., Oriental, Morocco.

Idaite

#BAC63965
Locality
Cuchillo Negro dist., Sierra Cuchillo, Sierra Co., New Mexico, United States 
Formula
Cu3FeS4 
Availability
Available
Price
$45.00
Size
3.5 x 3 x 2.5 cm - Miniature 
Tagged
sulfide , copper  

Dark metallic mass. Sub microscopic.


Idaite

Formula
Cu3FeS4 
Crystal System
Hexagonal 
Crystal Habit
Microscopic Crystals, Inclusions 
Luster
Metallic 
Color
brown, copper red, red 
Class
Hexagonal - Dihexagonal Dipyramidal 
Hardness
2.5-3.5 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Idaite
On Dakota Matrix
Other Available Idaite
WebMineral
View Idaite
Mindat
View Idaite

Inesite

#CL63947
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Ca2Mn2+7Si10O28(OH)2·5H2
Availability
Available
Price
$75.00
Size
5.5 x 4.5 x 2 cm - Sm Cabinet 

Stellate crystals embedded in matrix to 1cm.


Inesite

Formula
Ca2Mn2+7Si10O28(OH)2·5H2
Crystal System
Triclinic 
Crystal Habit
Radial, Massive - Fibrous, Spherical 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
brown, brown, pink, orange 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle - Uneven 
Hardness
Collection
William & Anne Cook Collection
Mineralpedia
View Inesite
On Dakota Matrix
Previously Sold Inesite
On Dakota Matrix
Other Available Inesite
WebMineral
View Inesite
Mindat
View Inesite

Maslovite

#BAC63966
Locality
Bushveld Complex, Limpopo prov., South Africa 
Formula
PtBiTe 
Availability
Available
Price
$195.00
Size
1.5 x 1.5 x 0.7 cm - Thumbnail 
Tagged
platinum , telllurium  

Maslovite is an rare platinum-bismuth-tellurium mineral found at the Merensky Reef, Bushveld complex, Transvaal, South Africa. It is submicroscopic, occuring in 200 microns in a glassy green and opaque matrix with several other sulfides. This specimen originated from Excalibur Minerals with label. It is sawed flat on one side, indicating that it was most likely analyzed.


Maslovite

Formula
PtBiTe 
Crystal System
Isometric 
Crystal Habit
Granular 
Luster
Metallic 
Color
steel gray 
Class
Isometric - Tetartoidal 
Hardness
4.5-5 
Collection
William & Anne Cook Collection

Mckinstryite

#KR61987
Locality
Mogollon dist., Catron Co., New Mexico, United States 
Formula
Ag5Cu3S4 
Availability
Available
Price
$50.00
Size
2 x 1.5 x 1 cm - Thumbnail 
Tagged
sulfide , copper , silver  

Dull black, anhedral masses.


Mckinstryite

Formula
Ag5Cu3S4 
Crystal System
Orthorhombic 
Crystal Habit
Microscopic Crystals, Granular, Aggregates 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
dark gray, black, steel gray 
Streak
dark gray 
Class
Orthorhombic - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
1.5-2.5 

Quartz

var. amethyst - #63377
Locality
near Amatitlan, Guerrero, Mexico 
Formula
SiO2 
Availability
Available
Price
$225.00
Size
4.3 x 4 x 2.5 cm - Miniature 

An attractive group of phantom amethyst crystals. The largest is 3.5cm. Very nice!


Quartz

Formula
SiO2 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Druse, Crystalline - Fine 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, violet, gray, yellow 
Streak
white 
Class
Trigonal - Trapezohedral 
Fracture
Conchoidal 
Hardness
Mineralpedia
View Quartz
On Dakota Matrix
Previously Sold Quartz
On Dakota Matrix
Other Available Quartz
WebMineral
View Quartz
Mindat
View Quartz

Vanadinite

#CL63953
Locality
Touissit-Bou Beker dist., Jerada Prov., Oriental, Morocco 
Formula
Pb5(VO4)3Cl 
Availability
Available
Price
$125.00
Size
6.5 x 5.5 x 3 cm - Sm Cabinet 
Tagged
vanadium  

Creamy brown, somewhat color zoned, hexagonal prismatic crystals to 7mm. A good small cabinet specimen with all of the crystals perched nicely on one end of the specimen.


Vanadinite

Formula
Pb5(VO4)3Cl 
Crystal System
Hexagonal 
Crystal Habit
Globular, Prismatic, Nodular 
Cleavage
None, None, None 
Luster
Adamantine 
Color
brown, brownish yellow, brown red, colorless, yellow 
Streak
brownish yellow 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
Collection
Chet S. Lemanski, Jr. Collection

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