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Mixed Minerals

Friday, 15 September 2023 04:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including pseudoboleite, quartz, rhodochrosite, roweite, sigloite, and silver and more from places like San Francisco mine, Sierra Gorda dist., Antofagasta, Chile, Centennial Eureka mine, Tintic dist., Juab Co., Utah, United States, Mont Saint-Hilaire, Montérégie, Québec, Canada, Shijiangshan mine, Chifeng City, Inner Mongolia, China, Siglo Veinte mine, Llallagua, Bolivia, and Pribram, Bohemia, Czech Republic.

SOLD

Pseudoboleite - BAC62440

Pseudoboleite - BAC62440

Pseudoboleite

with Penfieldite - #BAC62440

Details
Data
Provenance
Resources

Locality: San Francisco mine, Sierra Gorda dist., Antofagasta, Chile
Formula: Pb₃₁Cu₂₄Cl₆₂(OH)₄₈
Availability: Sold
Size: 5.5 x 4.5 x 3.5 cm - Sm Cabinet

Vivid blue micro, less than 0.3mm, glassy, pseudo-cubic crystals of Pseudoboleite in masses from 5 to 10mm with numerous murky white prismatic crystals of Penfieldite with long pointed terminations to 2mm. Excellent specimen.

Pseudoboleite

Formula: Pb₃₁Cu₂₄Cl₆₂(OH)₄₈
Crystal System: Tetragonal
Crystal Habit: Pseudo Cubic
Cleavage: Perfect, None, None
Luster: Vitreous - Pearly
Color: indigo blue
Streak: light green
Class: Tetragonal - Ditetragonal Dipyramidal
Fracture: Uneven
Hardness: 2.5

Collection: William & Anne Cook Collection

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

SOLD

Quartz - BAC62439

Quartz - BAC62439

Quartz

ps after Enargite with Beudantite & Malachite - #BAC62439

Details
Data
Provenance
Resources

Locality: Centennial Eureka mine, Tintic dist., Juab Co., Utah, United States
Formula: SiO₂
Availability: Sold
Size: 4 x 2 x 2 cm - Miniature

The elongated crystals coated with Quartz are supposedly Quartz pseudomorphs of Enargite. I'm not sure of that since I have never seen such long acicular crystals of Enargite with that width to length ratio. But there is yellow micro crystals of Beudantite and beads of Malachite, which actually could be Xocomecatlite. There are also numerous Baryte crystals. Ex. Excalibur-Cureton Company.

Quartz

Formula: SiO₂
Crystal System: Trigonal
Crystal Habit: Crystalline - Coarse, Druse, Crystalline - Fine
Cleavage: Indistinct, None, None
Luster: Vitreous (Glassy)
Color: brown, colorless, violet, gray, yellow
Streak: white
Class: Trigonal - Trapezohedral
Fracture: Conchoidal
Hardness: 7

Collection: William & Anne Cook Collection

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

Rhodochrosite - BAC62433

Rhodochrosite - BAC62433

Rhodochrosite

#BAC62433

$250.00 - Available
Details
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Details
Data
Provenance
Resources

Locality: Mont Saint-Hilaire, Montérégie, Québec, Canada
Formula: MnCO₃
Availability: Available
Price: $250.00
Size: 7 x 4.5 x 4 cm - Sm Cabinet
Tagged: carbonate

Dark red rhombic crystals to 5mm throughout the specimen. Top-notch, quality specimen for the locality.

Rhodochrosite

Formula: MnCO₃
Crystal System: Trigonal
Crystal Habit: Massive - Granular, Columnar, Botryoidal
Cleavage: Perfect, Perfect, Perfect
Luster: Vitreous (Glassy)
Color: pinkish red, red, rose red, yellowish gray, brown
Streak: white
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Brittle - Conchoidal
Hardness: 3

Collection: William & Anne Cook Collection

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

SOLD

Roweite - BAC62444

Roweite - BAC62444

Roweite

#BAC62444

Details
Data
Provenance
Resources

Locality: Shijiangshan mine, Chifeng City, Inner Mongolia, China
Formula: Ca₂Mn²⁺₂B₄O₇(OH)₆
Availability: Sold
Size: 4.5 x 5 x 2 cm - Miniature

Orange-brown radial groups of Roweirte 1.6cm across.

Roweite

Formula: Ca₂Mn²⁺₂B₄O₇(OH)₆
Crystal System: Orthorhombic
Cleavage: Indistinct, Indistinct, Distinct
Luster: Vitreous (Glassy)
Color: light brown
Streak: light brown
Class: Orthorhombic - Dipyramidal
Fracture: Brittle - Conchoidal
Hardness: 5

Collection: Chet S. Lemanski, Jr. Collection

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

SOLD

Sigloite - BAC62448

Sigloite - BAC62448

Sigloite

#BAC62448

Details
Data
Provenance
Resources

Locality: Siglo Veinte mine, Llallagua, Bolivia
Formula: Fe³⁺Al₂(PO₄)₂(OH)₃·7H₂O
Availability: Sold
Size: 6 x 4 x 1.5 cm - Sm Cabinet
Tagged: phosphate
Special Info: Type Locality

Yellow stained white Sigloite crystals to 4mm.

Sigloite

Formula: Fe³⁺Al₂(PO₄)₂(OH)₃·7H₂O
Crystal System: Triclinic
Crystal Habit: Pseudomorphous
Cleavage: Perfect, Good, None
Luster: Vitreous - Pearly
Color: brown, light brown, light yellow, straw yellow
Streak: white
Class: Triclinic - Pinacoidal
Hardness: 3

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

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

SOLD

Silver - BAC62435

Silver - BAC62435

Silver

ps after Dyscrasite - #BAC62435

Details
Data
Provenance
Resources

Locality: Pribram, Bohemia, Czech Republic
Formula: Ag
Availability: Sold
Size: 3 x 2.2 x 0.7 cm - Thumbnail
Tagged: native element

Exceptional specimen of Silver replacing Dyscrasite. Single crystals to 1.5 to 2.2cm. Ex. Herbert Obodda.

Silver

Formula: Ag
Crystal System: Isometric
Crystal Habit: Arborescent, Dendritic, Massive
Cleavage: None, None, None
Luster: Metallic
Color: silver white, gray white, gray
Streak: silver white
Class: Isometric - Hexoctahedral
Fracture: Hackly
Hardness: 2.5-3

Collection: William & Anne Cook Collection

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

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