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Mixed Minerals

Sunday, 21 May 2023 05:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including ajoite, ardennite-(as), aschamalmite, berzeliite, collinsite, and digenite and more from places like New Cornelia mine, Ajo dist., Pima Co., Arizona, United States, Salm-Château, Vielsalm, Stavelot Massif, Luxembourg, Belgium, Nasenkopf, Habach valley, Hohe Tauern, Salzburg, Austria, Långban, Filipstad, Värmland, Sweden, Tip Top mine, Custer Co., South Dakota, United States, and Leonard mine, Butte dist., Silver Bow Co., Montana, United States.

SOLD

Ajoite

#BAC61692

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Data
Provenance
Resources

Locality: New Cornelia mine, Ajo dist., Pima Co., Arizona, United States
Formula: Na₃Cu²⁺₂₀Al₃Si₂₉O₇₆(OH)₁₆·8H₂O
Availability: Sold
Size: 5.5 x 4 x 2 cm - Sm Cabinet
Tagged: copper
Special Info: Type Locality

Blue wafer thin bladed crystals of Ajoite. The crystals excellent and distinct.

Ajoite

Formula: Na₃Cu²⁺₂₀Al₃Si₂₉O₇₆(OH)₁₆·8H₂O
Crystal System: Triclinic
Crystal Habit: Massive, Lath, Platy
Cleavage: Perfect, None, None
Luster: Vitreous (Glassy)
Color: blue green
Streak: greenish white
Class: Triclinic - Pinacoidal
Hardness: -

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

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

Ardennite-(As)

#BAC61714

$45.00 - Available
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Locality: Salm-Château, Vielsalm, Stavelot Massif, Luxembourg, Belgium
Formula: Mn²⁺₄(AlMg)Al₄(Si₅As)O₂₂(OH)₆
Availability: Available
Price: $45.00
Size: 3.5 x 2.2 x 1.5 cm - Miniature

Orange crystal grains on Quartz.

Ardennite-(As)

Formula: Mn²⁺₄(AlMg)Al₄(Si₅As)O₂₂(OH)₆
Crystal System: Orthorhombic
Crystal Habit: Prismatic, Euhedral Crystals
Cleavage: Perfect, Distinct, Parting
Luster: Subadamantine
Color: yellow, yellow brown, dark brown, orange, black
Streak: pale brownish yellow
Class: Orthorhombic - Dipyramidal
Fracture: Brittle - Uneven
Hardness: 6-7

Collection: William & Anne Cook Collection

Mineralpedia: View Ardennite-(As)
On Dakota Matrix: Previously Sold Ardennite-(As)
On Dakota Matrix: Other Available Ardennite-(As)
WebMineral: View Ardennite-(As)
Mindat: View Ardennite-(As)

Aschamalmite

#BAC61707

$125.00 - Available
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Locality: Nasenkopf, Habach valley, Hohe Tauern, Salzburg, Austria
Formula: Pb_6-3xBi_2+xS₉
Availability: Available
Price: $125.00
Size: 2.8 x 2.3 x 1.5 cm - Thumbnail
Tagged: sulfide

Several 1-4mm grey to silvery lath-like crystals.

Aschamalmite

Formula: Pb_6-3xBi_2+xS₉
Crystal System: Monoclinic
Crystal Habit: Massive, Lath
Cleavage: Perfect, None, None
Luster: Metallic
Color: lead gray, gray
Class: Monoclinic - Prismatic
Hardness: 3.5

Collection: William & Anne Cook Collection

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

Berzeliite

#BAC61693

$65.00 - Available
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Locality: Långban, Filipstad, Värmland, Sweden
Formula: NaCa₂Mg₂(AsO₄)₃
Availability: Available
Price: $65.00
Size: 4 x 3 x 2.5 cm - Miniature
Tagged: arsenate
Special Info: Type Locality

Yellow crystal grains from 1 to 3mm.

Berzeliite

Formula: NaCa₂Mg₂(AsO₄)₃
Crystal System: Isometric
Cleavage: None, None, None
Luster: Resinous
Color: orange, sulfur yellow
Streak: white
Class: Isometric - Hexoctahedral
Fracture: Brittle - Conchoidal
Hardness: 4.5-5

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

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

SOLD

Collinsite

#61709

Details
Data
Provenance
Resources

Locality: Tip Top mine, Custer Co., South Dakota, United States
Formula: Ca₂Mg(PO₄)₂·2H₂O
Availability: Sold
Size: 4 x 3.6 x 3 cm - Miniature
Tagged: phosphate , pegmatite mineral

White to colorless fish-shaped crystals with pointed terminations as random singles and smaller radiating groups. The single crystals measure less than 0.75mm. I'm a little curious about the radiating groups. I have not noticed these groups before from the Tip Top mine. The matrix is Heterosite.

Collinsite

Formula: Ca₂Mg(PO₄)₂·2H₂O
Crystal System: Triclinic
Cleavage: Perfect, Perfect, None
Luster: Silky
Color: colorless, white, light brown
Streak: white
Class: Triclinic - Pinacoidal
Fracture: Brittle
Hardness: 3-3.5

Collection: William & Anne Cook Collection

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

SOLD

Digenite

#BAC61703

Details
Data
Provenance
Resources

Locality: Leonard mine, Butte dist., Silver Bow Co., Montana, United States
Formula: Cu_1.8S
Availability: Sold
Size: 4 x 2.5 x 2.3 cm - Miniature
Tagged: sulfide , copper

Massive bluish, metallic specimen. Digenite can be distinguished from Covellite by moistening the specimen with a little saliva on a fresh blue surface. Covellite will turn purple, digenite will not.

Digenite

Formula: Cu_1.8S
Crystal System: Trigonal
Crystal Habit: Pseudo Cubic
Cleavage: Indistinct, None, None
Luster: Sub Metallic
Color: blue, dark blue, black
Streak: grayish black
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Brittle - Conchoidal
Hardness: 2.5-3

Collection: William & Anne Cook Collection

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

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