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Ore Minerals

Wednesday, 29 June 2022 08:00 AM

Introducing the "Ore Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including skutterudite, sphalerite, spodumene, stannite, and tetrahedrite and more from places like Rustex mine, Gowganda area, Timiskaming dist., Ontario, Canada, Pro Patria mine, Rico dist., Dolores Co., Colorado, United States, Tin Mountain mine, Custer Co., South Dakota, United States, Wheal Rock, Porthtowan, St Agnes, Cornwall, England, and Pride of the West mine, San Juan Co., Colorado, United States.

SOLD

Skutterudite

- cobalt ore - #51274

Details
Data
Provenance
Resources

Locality: Rustex mine, Gowganda area, Timiskaming dist., Ontario, Canada
Formula: CoAs_3-x
Availability: Sold
Size: 6 x 4 x 3 cm - Sm Cabinet
Tagged: sulfide , ore specimen

Mass of grey, metallic Skutterudite, an ore of cobalt.

Skutterudite

Formula: CoAs_3-x
Crystal System: Isometric
Crystal Habit: Granular, Colloform, Massive
Cleavage: Distinct, Distinct, None
Luster: Metallic
Color: white, light steel gray
Streak: black
Class: Isometric - Diploidal
Fracture: Brittle
Hardness: 5.5-6

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

SOLD

Sphalerite

with Galena - zinc ore - #AH58551

Details
Data
Provenance
Resources

Locality: Pro Patria mine, Rico dist., Dolores Co., Colorado, United States
Formula: ZnS
Availability: Sold
Size: 11 x 8 x 3 cm - Cabinet
Tagged: sulfide , ore specimen

Dark greenish yellow Sphalerite mixed with Galena, Chalcopyrite and Rhodonite.

Sphalerite

Formula: ZnS
Crystal System: Isometric
Crystal Habit: Euhedral Crystals, Granular, Colloform
Cleavage: Perfect, Perfect, Perfect
Luster: Resinous - Greasy
Color: brown, yellow, red, green, black
Streak: brownish white
Class: Isometric - Hextetrahedral
Fracture: Uneven
Hardness: 3.5-4

Collection: Arnold G Hampson Collection

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

SOLD

Spodumene

var. kunzite - lithium ore - #58566

Details
Data
Provenance
Resources

Locality: Tin Mountain mine, Custer Co., South Dakota, United States
Formula: LiAlSi₂O₆
Availability: Sold
Size: 9 x 9 x 4 cm - Sm Cabinet
Tagged: ore specimen , pegmatite mineral

Pinkish lilac colored crystal section of Spodumene, variety kunzite. It is not gemmy but rather opaque. The Tin Mountain pegmatite had some of the biggest Spodumene crystals in the world on the order of tens of feet. Spodumene contains about 3.7% lithium. The US is a leading consumer of lithium while Australia is the leading producer ahead of Chile and China.

Spodumene

Formula: LiAlSi₂O₆
Crystal System: Monoclinic
Crystal Habit: Bladed, Prismatic
Cleavage: Perfect, Good, None
Luster: Vitreous (Glassy)
Color: grayish white, pink, violet, emerald green, yellow
Streak: white
Class: Monoclinic - Prismatic
Fracture: Splintery
Hardness: 6.5-7

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

SOLD

Spodumene

var. hiddenite - lithium ore - #58567

Details
Data
Provenance
Resources

Locality: Tin Mountain mine, Custer Co., South Dakota, United States
Formula: LiAlSi₂O₆
Availability: Sold
Size: 11 x 3.5 x 2.5 cm - Cabinet
Tagged: ore specimen , pegmatite mineral

Light green Spodumene with some translucency. Green Spodumene as well as pink spodumene is rare for the Black Hills. Spodumene, which contains lithium, is used for electric car batteries, ceramics, and glass.

Spodumene

Formula: LiAlSi₂O₆
Crystal System: Monoclinic
Crystal Habit: Bladed, Prismatic
Cleavage: Perfect, Good, None
Luster: Vitreous (Glassy)
Color: grayish white, pink, violet, emerald green, yellow
Streak: white
Class: Monoclinic - Prismatic
Fracture: Splintery
Hardness: 6.5-7

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

SOLD

Stannite

- tin ore - #58125

Details
Data
Provenance
Resources

Locality: Wheal Rock, Porthtowan, St Agnes, Cornwall, England
Formula: Cu₂FeSnS₄
Availability: Sold
Size: 7 x 5 x 6 cm - Sm Cabinet
Tagged: ore mineral , sulfide , copper , tin

This is a chunk of Stannite which has a dull grey tarnished surface. It is split and shows a shiny silvery luster. It is a primary ore of tin, although not as common as Cassiterite. Stannite carries 29.6% copper and 27.6% tin. The mineral is chiefly found in high temperature hydrothermal vein deposits. Stannite is relatively soft with a hardness of 4 and has a density of 4.3 - 4.5. This is the type localty.