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Mixed Minerals

Friday, 30 August 2024 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including acanthite, bournonite, calcite, chalcocite, chondrodite, and cinnabar and more from places like Niccola Secci mine, Sarrabus, Sardinia, Italy, Rodna mine, Rodna, Bistrița-Năsăud Co., Romania, Crestmore, Riverside Co., California, United States, Butte dist., Silver Bow Co., Montana, United States, and Slate Creek, Mazatzal Mnts., Gila County, Arizona, United States.

SOLD

Acanthite

#64551

Details
Data
Provenance
Resources

Locality: Niccola Secci mine, Sarrabus, Sardinia, Italy
Formula: Ag₂S
Availability: Sold
Size: 1.8 x 1 x 1 cm - Thumbnail
Tagged: sulfide , silver
Special Info: Antique Specimen

Oldie from a little known locality in Sardinia with an old Wards label. The Acanthite is to 8mm and has a little vial with a few grains.

Acanthite

Formula: Ag₂S
Crystal System: Monoclinic
Crystal Habit: Blocky, Skeletal, Arborescent
Cleavage: poor to none
Luster: Metallic
Color: lead gray, gray, iron black
Streak: shining black
Class: Monoclinic - Prismatic
Fracture: Sectile
Hardness: 2-2.5

Collection: Ex. A.E. Seaman Museum
Special Info: Antique Specimen

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

SOLD

Bournonite

with Pyrite - #64554

Details
Data
Provenance
Resources

Locality: Rodna mine, Rodna, Bistrița-Năsăud Co., Romania
Formula: CuPbSbS₃
Availability: Sold
Size: 0.5 x 0.4 x 0.4 cm - Thumbnail
Tagged: sulfide , copper
Special Info: Antique Specimen

There are three little specimen in a vial with crumbs. The main specimen shows good "cogwheel" habit. It is 5mm across.

Bournonite

Formula: CuPbSbS₃
Crystal System: Orthorhombic
Crystal Habit: Platy, Pseudo Cubic, Cog-wheel
Cleavage: Imperfect, None, None
Luster: Metallic
Color: gray, black, steel gray
Streak: gray
Class: Orthorhombic - Dipyramidal
Fracture: Sub Conchoidal
Hardness: 3

Collection: Ex. A.E. Seaman Museum
Special Info: Antique Specimen

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

SOLD

Calcite

with Graphite - #64620

Details
Data
Provenance
Resources

Locality: Crestmore, Riverside Co., California, United States
Formula: CaCO₃
Availability: Sold
Size: 11 x 6 x 4 cm - Cabinet
Tagged: carbonate

A cabinet specimen of blue Calcite with tiny hexagonal Graphite crystals.

Calcite

Formula: CaCO₃
Crystal System: Trigonal
Crystal Habit: Crystalline - Coarse, Stalactitic, Massive
Cleavage: Perfect, Perfect, Perfect
Luster: Vitreous (Glassy)
Color: colorless, white, pink, yellow, brown
Streak: white
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Brittle - Conchoidal
Hardness: 3

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

SOLD

Chalcocite

#64528

Details
Data
Provenance
Resources

Locality: Butte dist., Silver Bow Co., Montana, United States
Formula: Cu₂S
Availability: Sold
Size: 10 x 8 x 4.5 cm - Cabinet
Tagged: sulfide , copper , ore specimen
Special Info: Antique Specimen

Black, sooty mass of ore from Bisbee! I really wanted to break in half just to get that fresh look.

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

Collection: Ex. A.E. Seaman Museum
Special Info: Antique Specimen

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

SOLD

Chondrodite

with unknown - #64617

Details
Data
Provenance
Resources

Locality: Crestmore, Riverside Co., California, United States
Formula: Mg₅(SiO₄)₂F₂
Availability: Sold
Size: 5 x 5 x 3.5 cm - Miniature

Orange crystal grains of Chondrodite to 2mm in Calcite with a strange looking faint blue, glassy, and bulbous crystals as seen at the arrows. I have no idea what the unknown is.....