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Ore Minerals

Friday, 30 May 2025 10:30 AM

Introducing the "Ore Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including hematite, pyrite, pyrolusite, silver, tetrahedrite, and wolframite and more from places like Ord Ranges, Western Australia Ord Ranges, Western Australia, Open Cut Homestake mine, Lawrence Co., South Dakota, United States, Shannon mine, Mohave Co., Arizona, United States, Cross Lake O'Brien Property, Cobalt, Ontario, Canada, Casapalca, Lima Dept., Peru, and Silver Bell mine, Ophir dist., San Miguel Co., Colorado.

SOLD

Hematite

and Magnetite of the Cleaverville FM - #65867

Details
Data
Provenance
Resources

Locality: Ord Ranges, Western Australia Ord Ranges, Western Australia
Formula: Fe₂O₃
Availability: Sold
Size: 16 x 13 x 0.7 cm - Cabinet
Tagged: ore mineral

Beautiful banded BIF (banded iron formation). This slab is polished on one side and show the stunning alternating folder layers of metallic Magnetite/Hematite with red chert.

Hematite

Formula: Fe₂O₃
Crystal System: Trigonal
Crystal Habit: Tabular, Blocky, Earthy
Cleavage: None, None, None
Luster: Metallic
Color: reddish gray, black, blackish red
Streak: reddish brown
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Conchoidal
Hardness: 6.5

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

SOLD

Pyrite

in Cummingtonite - #65789

Details
Data
Provenance
Resources

Locality: Open Cut Homestake mine, Lawrence Co., South Dakota, United States
Formula: FeS₂
Availability: Sold
Size: 17 x 8 x 1 cm - Cabinet
Tagged: ore mineral , sulfide

A slab of Cummingtonite from the Homestake mine with Pyrite.

Pyrite

Formula: FeS₂
Crystal System: Isometric
Crystal Habit: Striated, Druse, Stalactitic
Cleavage: Poor, Poor, None
Luster: Metallic
Color: pale brass yellow
Streak: greenish black
Class: Isometric - Diploidal
Fracture: Conchoidal
Hardness: 6.5

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

SOLD

Pyrolusite

#65856

Details
Data
Provenance
Resources

Locality: Shannon mine, Mohave Co., Arizona, United States
Formula: MnO₂
Availability: Sold
Size: 8 x 8 x 4 cm - Sm Cabinet
Tagged: ore mineral

A very nice specimen of Pyrolusite showing 1mm prismatic crystals and very tiny acicular crystals.

Pyrolusite

Formula: MnO₂
Crystal System: Tetragonal
Crystal Habit: Reniform, Dendritic, Earthy
Cleavage: Perfect, None, None
Luster: Sub Metallic
Color: steel gray, iron gray, bluish gray
Streak: black
Class: Tetragonal - Ditetragonal Dipyramidal
Fracture: Brittle
Hardness: 6-6.5

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

SOLD

Silver

with Safflorite - #62078

Details
Data
Provenance
Resources

Locality: Cross Lake O'Brien Property, Cobalt, Ontario, Canada
Formula: Ag
Availability: Sold
Size: 11 x 7 x 0.5 cm - Cabinet
Tagged: ore mineral , native element

A slab of Silver with Safflorite. It appears that the silver is rimmed by the Safflorite. When rocked back and forth the Silver is nicely reflective in the core of Safflorite.

Silver

Formula: Ag
Crystal System: Isometric
Crystal Habit: Arborescent, Dendritic, Massive
Cleavage: None, None, None
Luster: Metallic
Color: silver white, gray white, gray
Streak: silver white
Class: Isometric - Hexoctahedral
Fracture: Hackly
Hardness: 2.5-3

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

Tetrahedrite

#65766

$95.00 - Available
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Details
Data
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Resources

Locality: Casapalca, Lima Dept., Peru
Formula: Cu₁₂Sb₄S₁₃
Availability: Available
Price: $95.00
Size: 10 x 7.5 x 4.5 cm - Cabinet
Tagged: ore mineral , sulfide , copper

Excellent specimen with large crystals to 1.5cm. Tetrahedrite is an ore of lead. Tetrahedrite is a minor ore of lead and possibly Silver.

Tetrahedrite

Formula: Cu₁₂Sb₄S₁₃
Crystal System: Isometric
Crystal Habit: Massive - Granular, Massive
Cleavage: None, None, None
Luster: Metallic
Color: iron gray, black, steel gray
Streak: black
Class: Isometric - Hextetrahedral
Fracture: Uneven
Hardness: 3.5-4

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

SOLD

Wolframite

#AH65768

Details
Data
Provenance
Resources

Locality: Silver Bell mine, Ophir dist., San Miguel Co., Colorado
Formula: (Fe²⁺, Mn²⁺)WO₄
Availability: Sold
Size: 8 x 3.5 x 4 cm - Sm Cabinet
Tagged: ore mineral , tungsten

This specimen was collected personally by Arnold Hampson in 1962. Manganiferous Wolframite has been known to occur in the Ophir district since the 1940's. Eckel (1961) states that the San Juan Mountains contain the most significant and richest occurence in the State. The Wolframite is at or near the Mn end of the Hubnerite-Ferberite series and thus is probably Hubnerite. It is widely distributed in Quartz veins in the Silverton district and elsewhere in the San Juans.

The specimen contains an abundance of tiny 1-2mm sharp, lustrous, black blades. Excellent specimen from this locality.

Wolframite

Formula: (Fe,Mn)WO4
Crystal System: Monoclinic
Crystal Habit: Prismatic, Lamellar, Massive - Granular
Cleavage: Perfect, None, None
Luster: Sub Metallic
Color: brownish black, iron black
Streak: reddish brown
Class: Monoclinic - Prismatic
Fracture: Brittle
Hardness: 4.5

Collection: Arnold G Hampson Collection

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

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