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Rare Mineral Species

Thursday, 09 January 2025 06:00 PM

Introducing the "Rare Mineral Species" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including balkanite, bandylite, barentsite, barrerite, barytolamprophyllite, and bauranoite and more from places like Manhattan dist., Nye Co., Nevada, United States, Queténa mine, Calama, El Loa, Antofagasta, Chile, Khibiny Massif, Kola Peninsula, Russia, Kuiu Island, Petersburg Borough, Alaska, United States, Yukspor Mt, Khibiny Massif, Kola Peninsula, Russia, and Tulukuevskoe U deposit, Krasnokamensk, Zabaykalsky Krai, Russia.

SOLD

Balkanite - BAC65153

Balkanite - BAC65153

Balkanite

#BAC65153

Details
Data
Provenance
Resources

Locality: Manhattan dist., Nye Co., Nevada, United States
Formula: Ag₅Cu₉HgS₈
Availability: Sold
Size: 3 x 1.5 x 1 cm - Thumbnail
Tagged: sulfide , copper , silver

Silvery crystals less than 0.5mm dispersed in matrix.

Balkanite

Formula: Ag₅Cu₉HgS₈
Crystal System: Orthorhombic
Crystal Habit: Microscopic Crystals, Prismatic
Cleavage: None, None, None
Luster: Metallic
Color: gray, steel gray
Class: Orthorhombic - Disphenoidal
Hardness: 3.5

Collection: William & Anne Cook Collection

On Dakota Matrix: Previously Sold Balkanite
On Dakota Matrix: Other Available Balkanite
WebMineral: View Balkanite
Mindat: View Balkanite

SOLD

Bandylite - BAC65144

Bandylite - BAC65144

Bandylite

with Eriochalcite - #BAC65144

Details
Data
Provenance
Resources

Locality: Queténa mine, Calama, El Loa, Antofagasta, Chile
Formula: CuB(OH)₄Cl
Availability: Sold
Size: 6.5 x 4.5 x 3.5 cm - Sm Cabinet
Tagged: copper
Special Info: Type Locality

Soft, powdery masses of extremely rare Bandylite.

Bandylite

Formula: CuB(OH)₄Cl
Crystal System: Tetragonal
Cleavage: Perfect, None, None
Luster: Vitreous - Pearly
Color: dark blue
Streak: light blue
Class: Tetragonal - Ditetragonal Dipyramidal
Fracture: Flexible
Hardness: 2.5

Collection: William & Anne Cook Collection
Special Info: Type Locality

On Dakota Matrix: Previously Sold Bandylite
On Dakota Matrix: Other Available Bandylite
WebMineral: View Bandylite
Mindat: View Bandylite

SOLD

Barentsite - BAC65265

Barentsite - BAC65265

Barentsite

#BAC65265

Details
Data
Provenance
Resources

Locality: Khibiny Massif, Kola Peninsula, Russia
Formula: Na₇Al(CO₃)₂(HCO₃)₂F₄
Availability: Sold
Size: 3 x 2 x 1.3 cm - Thumbnail
Tagged: carbonate

Orange brown somewhat powdery masses in veinlets of unknown matrix.

Barentsite

Formula: Na₇Al(CO₃)₂(HCO₃)₂F₄
Crystal System: Triclinic
Crystal Habit: Anhedral Grains
Cleavage: Perfect, Perfect, None
Luster: Vitreous - Pearly
Color: colorless
Streak: white
Class: Triclinic
Fracture: Brittle
Hardness: 3

On Dakota Matrix: Previously Sold Barentsite
On Dakota Matrix: Other Available Barentsite
WebMineral: View Barentsite
Mindat: View Barentsite

SOLD

Barrerite - BAC65143

Barrerite - BAC65143

Barrerite

#BAC65143

Details
Data
Provenance
Resources

Locality: Kuiu Island, Petersburg Borough, Alaska, United States
Formula: Na₈(Si₂₈Al₈)O₇₂·26H₂O
Availability: Sold
Size: 7.5 x 5 x 3.5 cm - Sm Cabinet

White, glossy large crystals to 2cm across of this rare zeolite.

Barrerite

Formula: Na₈(Si₂₈Al₈)O₇₂·26H₂O
Crystal System: Orthorhombic
Cleavage: Perfect, None, None
Luster: Vitreous (Glassy)
Color: white, pink
Streak: white
Class: Orthorhombic - Dipyramidal
Hardness: 3-4

Collection: William & Anne Cook Collection

On Dakota Matrix: Previously Sold Barrerite
On Dakota Matrix: Other Available Barrerite
WebMineral: View Barrerite
Mindat: View Barrerite

SOLD

Barytolamprophyllite - BAC65156

Barytolamprophyllite - BAC65156

Barytolamprophyllite

#BAC65156

Details
Data
Provenance
Resources

Locality: Yukspor Mt, Khibiny Massif, Kola Peninsula, Russia
Formula: Na₃(BaK)Ti₃(Si₂O₇)₂O₂(OH)₂
Availability: Sold
Size: 3 x 3 x 3 cm - Thumbnail

Flashy, vitreous cleaveable mass.

Barytolamprophyllite

Formula: Na₃(BaK)Ti₃(Si₂O₇)₂O₂(OH)₂
Crystal System: Monoclinic
Crystal Habit: Flakes, Stellate
Cleavage: Perfect, Good, Poor
Luster: Vitreous (Glassy)
Color: golden brown, dark brown
Streak: light brown
Class: Monoclinic - Prismatic
Fracture: Brittle
Hardness: 2-3

Collection: William & Anne Cook Collection

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

SOLD

Bauranoite - BAC65264

Bauranoite - BAC65264

Bauranoite

#BAC65264

Details
Data
Provenance
Resources

Locality: Tulukuevskoe U deposit, Krasnokamensk, Zabaykalsky Krai, Russia
Formula: BaU₂O₇·4-5H₂O
Availability: Sold
Size: 2 x 1.5 x 1.5 cm - Thumbnail

Orange brown crystalline grains. Bauranoite is a two-locality mineral and very rare.

Bauranoite

Formula: BaU₂O₇·4-5H₂O
Crystal System: Triclinic
Crystal Habit: Massive - Granular
Color: reddish brown
Class: Triclinic
Hardness: 5

Collection: William & Anne Cook Collection

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

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