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Mixed Minerals

Friday, 12 May 2023 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including kamotoite-(y), kasolite, kentrolite, kolbeckite, mackayite, and malhmoodite and more from places like Kamoto East mine, Kolwezi, Katanga, Democratic Republic of Congo, Swambo Hill, Katanga, DR of Congo, Big Chief mine, Hillsboro dist., Sierra County, New Mexico, United States, Christy dep., Magnet Cove, Hot Spring Co., Arkansas, United States, Goldfield, Esmeralda Co., Nevada, United States, and Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States.

SOLD

Kamotoite-(Y)

#61656

Details
Data
Provenance
Resources

Locality: Kamoto East mine, Kolwezi, Katanga, Democratic Republic of Congo
Formula: Y₂O₄(UO₂)₄(CO₃)₃·14H₂O
Availability: Sold
Size: 2.5 x 1.5 x 0.4 cm - Thumbnail
Tagged: carbonate , REE mineral
Special Info: Radioactive!!

Bright gold finch yellow radiating crystals of Kamotoite-(Y) to 4mm. Excellent specimen.

Kamotoite-(Y)

Formula: Y₂O₄(UO₂)₄(CO₃)₃·14H₂O
Crystal System: Monoclinic
Crystal Habit: Encrustations
Cleavage: Good, Distinct, None
Luster: Vitreous (Glassy)
Color: yellow, bright yellow
Class: Monoclinic - Prismatic
Hardness: -

Special Info: Radioactive!!

Mineralpedia: View Kamotoite-(Y)
On Dakota Matrix: Previously Sold Kamotoite-(Y)
On Dakota Matrix: Other Available Kamotoite-(Y)
WebMineral: View Kamotoite-(Y)
Mindat: View Kamotoite-(Y)

SOLD

Kasolite

#59574

Details
Data
Provenance
Resources

Locality: Swambo Hill, Katanga, DR of Congo
Formula: Pb(UO₂)SiO₄·H₂O
Availability: Sold
Size: 2.5 x 1.5 x 1.3 cm - Thumbnail
Special Info: Radioactive!!

Bright orange bladed crystals to maybe 0.75mm. Very rich and fantastic under the scope.

Kasolite

Formula: Pb(UO₂)SiO₄·H₂O
Crystal System: Monoclinic
Crystal Habit: Radial, Prismatic, Fibrous
Cleavage: Perfect, Good, Good
Luster: Resinous - Greasy
Color: green, gray green, yellow, yellow brown, reddish orange
Streak: light brownish yellow
Class: Monoclinic - Prismatic
Fracture: Uneven
Hardness: 4

Special Info: Radioactive!!

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

SOLD

Kentrolite

with Mimetite - #BAC61673

Details
Data
Provenance
Resources

Locality: Big Chief mine, Hillsboro dist., Sierra County, New Mexico, United States
Formula: Pb₂Mn³⁺₂O₂(Si₂O₇)
Availability: Sold
Size: 4 x 3 x 1 cm - Miniature

Black crystals of Kentrollite to 2mm in large groups. Good piece!

Kentrolite

Formula: Pb₂Mn³⁺₂O₂(Si₂O₇)
Crystal System: Orthorhombic
Crystal Habit: Prismatic, Crystalline - Fine, Wheat Sheaf
Cleavage: Distinct, None, None
Luster: Sub Metallic
Color: dark reddish brown, reddish black
Streak: dark brown
Class: Orthorhombic - Dipyramidal
Fracture: Brittle
Hardness: 5

Collection: William & Anne Cook Collection

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

Kolbeckite

#61665

$35.00 - Available
Details
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Details
Data
Provenance
Resources

Locality: Christy dep., Magnet Cove, Hot Spring Co., Arkansas, United States
Formula: ScPO₄·2H₂O
Availability: Available
Price: $35.00
Size: 2 x 1.2 x 1.1 cm - Thumbnail
Tagged: phosphate

Yellow tabular crystal to 1mm.

Kolbeckite

Formula: ScPO₄·2H₂O
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: 5

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

SOLD

Mackayite

#BAC61667

Details
Data
Provenance
Resources

Locality: Goldfield, Esmeralda Co., Nevada, United States
Formula: Fe³⁺Te⁴⁺₂O₅(OH)
Availability: Sold
Size: 2.3 x 2.5 x 2 cm - Thumbnail
Tagged: tellurium

Green dipyramidal crystals to 0.25mm.

Mackayite

Formula: Fe³⁺Te⁴⁺₂O₅(OH)
Crystal System: Tetragonal
Cleavage: None, None, None
Luster: Vitreous (Glassy)
Color: brownish green, yellow green, olive green
Streak: light green
Class: Tetragonal - Ditetragonal Dipyramidal
Fracture: Brittle - Conchoidal
Hardness: 4.5

Collection: William & Anne Cook Collection

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

SOLD

Malhmoodite

#61664

Details
Data
Provenance
Resources

Locality: Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
Formula: Fe²⁺Zr(PO₄)₂·4H₂O
Availability: Sold
Size: 1.2 x 1 x 0.5 cm - Thumbnail
Tagged: phosphate
Special Info: Type Locality

Murky yellowish-green spheroidal crystals to about 0.75mm.

Malhmoodite

Formula: Fe²⁺Zr(PO₄)₂·4H₂O
Crystal System: Monoclinic
Cleavage: Good, None, None
Luster: Silky
Color: cream white
Streak: white
Class: Monoclinic - Prismatic
Hardness: 3

Special Info: Type Locality

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

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