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Mixed Minerals

Friday, 18 May 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 astrophyllite, badalovite, chalcopyrite, cubanite, fluorapatite, and galena and more from places like Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia, Tolbachik Volcano, Kamchatka, Russia, Joplin, Jasper Co., Missouri, United States, Palabora mine, Phalaborwa, Limpopo, South Africa, Governador Valadares, Minas Gerais, Brazil, and Double Rainbow mine, Galena, Lawrence Co., South Dakota, United States.

Astrophyllite

Potassic-Richterite after Aenigmatite - #43631
Locality
Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia 
Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4
Availability
Available
Price
$55.00
Size
8.5 x 4.5 x 4.5 cm - Sm Cabinet 

Deep red plates of Astrophyllite with green Richterite and black Aenigmatite.


Astrophyllite

Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4
Crystal System
Triclinic 
Crystal Habit
Bladed, Stellate, Crystalline - Fine 
Cleavage
Perfect, None, None 
Luster
Adamantine - Pearly 
Color
brown, brownish red, bronze yellow, gold yellow 
Streak
yellowish brown 
Class
Triclinic - Pedial 
Fracture
Brittle 
Hardness
3-3.5 

Badalovite

#48303
Locality
Tolbachik Volcano, Kamchatka, Russia 
Formula
Na2Mg2Fe(AsO4)3 
Availability
Available
Price
$235.00
Size
4 x 3.5 x 3 cm - Miniature 
Special Info
Type Locality 
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Author's Material 

Excellent micro crystals of greenish yellow blades of Badalovite from 0.5 to 1mm at the greatest and group in 1.5 mm sprays covering the face of this specimen. This is a study specimen used to describe the mineral by Dr. Igor Pekov. It is a new IMA mineral, not yet published, but approved. Great coverage and fun to view with the scope.

The exact locality is: Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption (Main Fracture), Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia


Special Info
Type Locality
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Author's Material

Chalcopyrite

on Sphalerite - #RW48722
Locality
Joplin, Jasper Co., Missouri, United States 
Formula
Cu1+Fe3+S2 
Availability
Sold
Size
5 x 5.5 x 4.5 cm - Sm Cabinet 
Tagged
sulfide , copper  

Large deep red, translucent Sphalerite crystal 4.5cm across with numerous golden Chalcopyrite crystals.


Chalcopyrite

Formula
Cu1+Fe3+S2 
Crystal System
Tetragonal 
Crystal Habit
Euhedral Crystals, Striated, Druse 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
brass yellow, honey yellow 
Streak
greenish black 
Class
Tetragonal - Scalenohedral 
Fracture
Brittle 
Hardness
3.5 
Collection
Robert J. Waidler Collection

Cubanite

with Magnetite in carbonatite - #DO49093
Locality
Palabora mine, Phalaborwa, Limpopo, South Africa 
Formula
CuFe2S3 
Availability
Sold
Size
12 x 7.5 x 3.5 cm - Cabinet 
Tagged
sulfide , copper , ore specimen  

An ore specimen of sulfides, namely Cubanite as brassy golden large grains over 1cm associated with Chalcopyrite and black Magnetite from Carbonatite. The Phalaborwa Complex is comprised of differentiated rocks of intrusives in pyroxenite. A good summary can be found here: http://wwwu.edu.uni-klu.ac.at/mmessner/sites/rsa/palabora/palabora.htm

Collected by Don Owens, while on geological consulting at Palabora.


Cubanite

Formula
CuFe2S3 
Crystal System
Orthorhombic 
Crystal Habit
Striated 
Cleavage
None, None, None 
Luster
Metallic 
Color
brass yellow, bronze yellow 
Streak
black 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness
3.5 
Collection
Don Owens Collection
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Fluorapatite

#BN47976
Locality
Governador Valadares, Minas Gerais, Brazil 
Formula
Ca5(PO4)3
Availability
Sold
Size
11 x 7.5 x 6.5 cm - Cabinet 
Tagged
phosphate , pegmatite mineral  

A large impressive deep blue Fluorapatite crystal with five prism faces and and five pyramid faces at the termination.


Fluorapatite

Formula
Ca5(PO4)3
Crystal System
Hexagonal 
Crystal Habit
Massive - Granular, Euhedral Crystals 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Resinous 
Color
blue, brown, colorless, violet, green 
Streak
white 
Class
Hexagonal - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
Collection
Dr. Buford Nichols Collection

Galena

with Pyrite - #49126
Locality
Double Rainbow mine, Galena, Lawrence Co., South Dakota, United States 
Formula
PbS 
Availability
Available
Price
$125.00
Size
8 x 6 x 4.5 cm - Sm Cabinet 
Tagged
sulfide  

Galena from the Black Hills of South Dakota is seldom seen on the market. Only limited quantities were mined from the Double Rainbow mine, an underground silver mine near the town of Galena. This specimen contains thousands of cubo-octahedral crystals to 3mm with some micro Pyrite. 


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 
Mineralpedia
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