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Rare Minerals for Collectors

Friday, 21 March 2025 06:00 PM

Introducing the "Rare Minerals for Collectors" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including cassiterite, chalcopyrite, florencite-(ce), galena, and proustite and more from places like Little Craig, Glen Gairn, Grampian, Scotland, Shaft 371, Hartenstein dist., Erzgebirge, Saxony, Germany, St. Joe Minerals, St. Francois Co., Missouri, United States, Rumi Tucu mine, Papachacra, Belen dept., Catamarca, Argentina, Renison Bell mine, Zeehan, Tasmania, Australia, and Jachymov, Erzgegirge, Bohemia, Czech Republic.

Cassiterite

#65539

$95.00 - Available
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Locality: Little Craig, Glen Gairn, Grampian, Scotland
Formula: SnO₂
Availability: Available
Price: $95.00
Size: 5 x 3 x 3 cm - Miniature
Tagged: tin

Cute little, well-formed Cassiterite crystals in quartz vein. Nothing upon the world stage but it's from Scotland!

Cassiterite

Formula: SnO₂
Crystal System: Tetragonal
Crystal Habit: Prismatic, Massive, Botryoidal
Cleavage: Perfect, Indistinct, None
Luster: Adamantine
Color: brown, brownish black, colorless, green, gray
Streak: brownish white
Class: Tetragonal - Ditetragonal Dipyramidal
Fracture: Irregular
Hardness: 6-7

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

Chalcopyrite

with Hematite and Dolomite - #65492

$250.00 - Available
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Locality: Shaft 371, Hartenstein dist., Erzgebirge, Saxony, Germany
Formula: Cu¹⁺Fe³⁺S₂
Availability: Available
Price: $250.00
Size: 6.5 x 5 x 1.3 cm - Sm Cabinet
Tagged: sulfide , copper

Brassy golden metallic Chalcopyrite crystals to 5mm lined with discoidal deep red Hematite. The Hematite is an unusual association with Chalcopyrite.

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

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

Chalcopyrite

#65495

$175.00 - Available
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Locality: St. Joe Minerals, St. Francois Co., Missouri, United States
Formula: Cu¹⁺Fe³⁺S₂
Availability: Available
Price: $175.00
Size: 8 x 4 x 3.5 cm - Sm Cabinet
Tagged: sulfide , copper

Very nice iridescent Chalcopyrite crystals up to 7mm across.

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

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

Florencite-(Ce)

with Quartz and feldspar - #65742

$75.00 - Available
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Locality: Rumi Tucu mine, Papachacra, Belen dept., Catamarca, Argentina
Formula: CeAl₃(PO₄)₂(OH)₆
Availability: Available
Price: $75.00
Size: 4 x 3 x 1.5 cm - Miniature
Tagged: phosphate , REE mineral

Bright orange crystals of Florencite to less than 0.4mm on feldspar and Quartz.

Florencite-(Ce)

Formula: CeAl₃(PO₄)₂(OH)₆
Crystal System: Trigonal
Cleavage: Good, None, None
Luster: Resinous - Greasy
Color: colorless, gray, light yellow, pink
Streak: white
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Brittle - Conchoidal
Hardness: 5-6

Mineralpedia: View Florencite-(Ce)
On Dakota Matrix: Previously Sold Florencite-(Ce)
On Dakota Matrix: Other Available Florencite-(Ce)
WebMineral: View Florencite-(Ce)
Mindat: View Florencite-(Ce)

Galena

with Pyrite - #65500

$150.00 - Available
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Locality: Renison Bell mine, Zeehan, Tasmania, Australia
Formula: PbS
Availability: Available
Price: $150.00
Size: 9.5 x 7 x 6.5 cm - Cabinet
Tagged: ore mineral , sulfide

Cubo-octahedral crystals of Galena to 6mm with tiny Pyrite crystals in the crevices. Apparently this is one of the largest tin mines in the world according to Mindat summary. In the matrix is dark reddish brown Sphalerite.