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Tucson Show Finds

Wednesday, 26 February 2025 06:00 PM

Introducing the "Tucson Show Finds" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including chalcocite, copper, duftite, euchroite, francisite, and gauthierite and more from places like Bisbee, Cochise Co., Arizona, United States, Indiana mine, Ontonogan Co., Michigan, United States, Brandy Gill mine, Caldbeck Fells, Cumbria, England, L'ubietová (Libethen), Banská Bystrica, Slovakia, Baccu Locci mine, Villaputzu, Cagliari, Sardinia, Italy, and Shinkolobwe, Katanga, Democratic Republic of Congo.

SOLD

Chalcocite - 65554

Chalcocite - 65554

Chalcocite

#65554

Details
Data
Provenance
Resources

Locality: Bisbee, Cochise Co., Arizona, United States
Formula: Cu₂S
Availability: Sold
Size: 7 x 4.5 x 2.5 cm - Sm Cabinet
Tagged: sulfide , copper

Choice specimen of Chalcocite from this important and historical copper district. The crystals are gray with a slight bluish tint and most of the crystals are single and are deeply striated. Some of the crystals show a typical pseudohexagonal habit, a result of cyclic twinning. The Butte district is known for some of the best Chalcocite crystals in the world.

Chalcocite

Formula: Cu₂S
Crystal System: Monoclinic
Crystal Habit: Massive, Granular, Euhedral Crystals
Cleavage: Indistinct, None, None
Luster: Metallic
Color: blue black, gray, black, black gray, steel gray
Streak: grayish black
Class: Monoclinic - Prismatic
Fracture: Conchoidal
Hardness: 2.5-3

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

Copper - 65541

Copper - 65541

Copper

#65541

$225.00 - Available
Details
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Details
Data
Provenance
Resources

Locality: Indiana mine, Ontonogan Co., Michigan, United States
Formula: Cu
Availability: Available
Price: $225.00
Size: 4.5 x 3.5 x 2.5 cm - Miniature
Tagged: native element

Crude Copper crystals with a dark coppery petina.

Copper

Formula: Cu
Crystal System: Isometric
Crystal Habit: Nodular, Arborescent
Cleavage: None, None, None
Luster: Metallic
Color: brown, copper red, light pink, red
Streak: rose
Class: Isometric - Hexoctahedral
Fracture: Hackly
Hardness: 2.5-3

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

SOLD

Duftite - 65510

Duftite - 65510

Duftite

#65510

Details
Data
Provenance
Resources

Locality: Brandy Gill mine, Caldbeck Fells, Cumbria, England
Formula: PbCuAsO₄(OH)
Availability: Sold
Size: 6.5 x 4.5 x 3.5 cm - Sm Cabinet
Tagged: arsenate , copper

Lime green coatings and micro crytals on Quartz. Excellent specimen.

Duftite

Formula: PbCuAsO₄(OH)

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

SOLD

Euchroite - 65493

Euchroite - 65493

Euchroite

#65493

Details
Data
Provenance
Resources

Locality: L'ubietová (Libethen), Banská Bystrica, Slovakia
Formula: Cu₂AsO₄(OH)·3H₂O
Availability: Sold
Size: 7.5 x 6 x 1.5 cm - Sm Cabinet
Tagged: arsenate , copper

Curly-looking Euchroite crystals to 2mm with great coverage across the face.

Euchroite

Formula: Cu₂AsO₄(OH)·3H₂O
Crystal System: Orthorhombic
Crystal Habit: Crystalline - Fine, Druse
Cleavage: Imperfect, Imperfect, None
Luster: Vitreous (Glassy)
Color: leek green, emerald green
Streak: green
Class: Orthorhombic - Disphenoidal
Fracture: Sub Conchoidal
Hardness: 3.5-4

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

SOLD

Francisite - 65432

Francisite - 65432

Francisite

#65432

Details
Data
Provenance
Resources

Locality: Baccu Locci mine, Villaputzu, Cagliari, Sardinia, Italy
Formula: Cu₃Bi(Se⁴⁺O₃)₂O₂Cl
Availability: Sold
Size: 1.8 x 1.2 x 1.6 cm - Thumbnail
Tagged: copper , selenium

Mint green platy crystals of Francisite.

Francisite

Formula: Cu₃Bi(Se⁴⁺O₃)₂O₂Cl
Crystal System: Orthorhombic
Cleavage: None, None, None
Luster: Adamantine
Color: light green
Streak: light green
Class: Orthorhombic - Dipyramidal
Hardness: 3-4

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

Gauthierite - 65570

Gauthierite - 65570

Gauthierite

#65570

$175.00 - Available
Details
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Details
Data
Provenance
Resources

Locality: Shinkolobwe, Katanga, Democratic Republic of Congo
Formula: KPb[(UO₂)₇O₅(OH)₇] 8H₂O
Availability: Available
Price: $175.00
Size: 0.5 x 0.3 x 0.2 cm - Thumbnail
Special Info: Radioactive!!
Special Info: Type & Only Locality

Orange, square tabular crystals too small for my camera set-up. This is type and only locality.

Gauthierite

Special Info: Radioactive!!
Special Info: Type & Only Locality

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

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