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Mixed Rare Minerals

Friday, 24 May 2024 12:00 PM

Introducing the "Mixed Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including chkalovite, cosalite, eclarite, franckeite, and jamesonite and more from places like Shkatulka peg., Umbozero mine, Alluaiv Mt., Lovozero, Kola Peninsula, Russia, Bolivar mine, Piedras Verdes, Chihuahua, Mexico, Bärenbad mine, Hollersbach, Hohe Tauern, Salzburg, Austria, San José mine, Oruro City, Oruro Dept., Bolivia, and Port Isaac, St. Endellion, Cornwall, England.

Chkalovite

#63671

$60.00 - Available
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Locality: Shkatulka peg., Umbozero mine, Alluaiv Mt., Lovozero, Kola Peninsula, Russia
Formula: Na₂BeSi₂O₆
Availability: Available
Price: $60.00
Size: 2 x 2 x 1.2 cm - Thumbnail
Tagged: beryllium
Special Info: XRD Confirmed
Special Info: EDS Confirmed

White, translucent crystalline specimen. Chkalovite is a rare beryllium silicate described in 1939, found Quebec, Greenland and Russia. This specimen is composed of nearly all white to clear Chkalovite. It was identified by Dr. Igor Pekov.

Chkalovite

Formula: Na₂BeSi₂O₆
Crystal System: Orthorhombic
Crystal Habit: Equant Grains
Cleavage: Fair, Indistinct, None
Luster: Vitreous - Greasy
Color: colorless, white
Streak: white
Class: Orthorhombic - Pyramidal
Fracture: Brittle - Conchoidal
Hardness: 6

Special Info: XRD Confirmed
Special Info: EDS Confirmed

On Dakota Matrix: Previously Sold Chkalovite
On Dakota Matrix: Other Available Chkalovite
WebMineral: View Chkalovite
Mindat: View Chkalovite

Cosalite

with Chalcopyrite - #64160

$95.00 - Available
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Locality: Bolivar mine, Piedras Verdes, Chihuahua, Mexico
Formula: Pb₂Bi₂S₅
Availability: Available
Price: $95.00
Size: 6 x 3 x 2.6 cm - Sm Cabinet

Gray metallic, long slender, crystals to 3mm. There are several areas which contain the Cosalite in Quartz and Chalcopyrite marix.

Cosalite

Formula: Pb₂Bi₂S₅
Crystal System: Orthorhombic
Crystal Habit: Radial, Massive - Fibrous
Cleavage: Good, None, None
Luster: Metallic
Color: gray, steel gray, silver white
Streak: black
Class: Orthorhombic - Dipyramidal
Fracture: Uneven
Hardness: 2.5-3

Mineralpedia: View Cosalite
On Dakota Matrix: Previously Sold Cosalite
On Dakota Matrix: Other Available Cosalite
WebMineral: View Cosalite
Mindat: View Cosalite

Eclarite

#BAC64170

$45.00 - Available
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Locality: Bärenbad mine, Hollersbach, Hohe Tauern, Salzburg, Austria
Formula: CuPb₉Bi₁₂S₂₈
Availability: Available
Price: $45.00
Size: 2.5 x 1.5 x 0.8 cm - Thumbnail
Tagged: sulfide , copper , bismuth

Thin bladed silvery crystals suspended in Quartz matrix.

Eclarite

Formula: CuPb₉Bi₁₂S₂₈
Crystal System: Orthorhombic
Crystal Habit: Fan Shaped, Aggregates, Acicular
Cleavage: Good, Poor, None
Luster: Metallic
Color: white gray, tin white
Streak: lead gray
Class: Orthorhombic - Dipyramidal
Hardness: 3-3.5

On Dakota Matrix: Previously Sold Eclarite
On Dakota Matrix: Other Available Eclarite
WebMineral: View Eclarite
Mindat: View Eclarite

Franckeite

#BAC64159

$75.00 - Available
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Locality: San José mine, Oruro City, Oruro Dept., Bolivia
Formula: Fe²⁺(Pb,Sn²⁺)₆Sn⁴⁺₂Sb³⁺₂S₁₄
Availability: Available
Price: $75.00
Size: 2.5 x 2.5 x 1.5 cm - Thumbnail
Tagged: sulfide , tin

Very, very good large crystals of Franckeite with a platy habit and striations. The largest crystal is 6mm. There are also prismatic Arsenopyrite and an acicular mineral.