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Mixed Minerals

Sunday, 24 July 2022 07:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including diopside, dioptase, dussertite, ferrimolybdite, fluorite, and fluorluanshiweiite and more from places like Prabornaz mine, Saint-Marcel, Aosta Valley, Italy, Tsumeb mine, Tsumeb, Namibia, Djebel Debar, Constantine, Algeria, Little Cottonwood Canyon, Wasatch Mts, Salt Lake Co., Utah, United States, Melchor Múzquiz, Coahuila, Mexico, and Shuk-Byul' peg., Sol'bel'der peg. field, Sangilen Uppland, Tuva, Siberia, Russia.

SOLD

Diopside

var. violane - #BW58851

Details
Data
Provenance
Resources

Locality: Prabornaz mine, Saint-Marcel, Aosta Valley, Italy
Formula: CaMgSi₂O₆
Availability: Sold
Size: 8 x 4.5 x 4.5 cm - Sm Cabinet

This is a rare color variety of Diopside called "violane". Apparently the color is due to a little manganese in the structure.

Diopside

Formula: CaMgSi₂O₆
Crystal System: Monoclinic
Crystal Habit: Prismatic, Blocky, Granular
Cleavage: Good, Indistinct, None
Luster: Vitreous (Glassy)
Color: blue, brown, colorless, green, gray
Streak: white green
Class: Monoclinic - Prismatic
Fracture: Brittle - Conchoidal
Hardness: 6

Collection: Bill Wilson Collection

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

Dioptase

#WR58870

$45.00 - Available
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Details
Data
Provenance
Resources

Locality: Tsumeb mine, Tsumeb, Namibia
Formula: CuSiO₃·H₂O
Availability: Available
Price: $45.00
Size: 3 x 2.5 x 2 cm - Thumbnail
Tagged: copper

Nice coverage of sparkly green Dioptase crystals to 2m.

Dioptase

Formula: CuSiO₃·H₂O
Crystal System: Trigonal
Crystal Habit: Massive, Cryptocrystalline, Crystalline - Coarse
Cleavage: Good, None, None
Luster: Vitreous (Glassy)
Color: dark blue green, emerald green, turquoise
Streak: green
Class: Trigonal - Rhombohedral
Fracture: Conchoidal
Hardness: 5

Collection: Willard L. Roberts Collection

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

SOLD

Dussertite

#BW58856

Details
Data
Provenance
Resources

Locality: Djebel Debar, Constantine, Algeria
Formula: BaFe³⁺₃(AsO₄)(AsO₃OH)(OH)₆
Availability: Sold
Size: 7 x 5.5 x 5.5 cm - Sm Cabinet
Tagged: arsenate
Special Info: Type Locality

This specimen is just loaded with micro sugary Dussertite. It's a good specimen from this locality (the type locality) and is a rather uncommon barium arsenate.

Dussertite

Formula: BaFe³⁺₃(AsO₄)(AsO₃OH)(OH)₆
Crystal System: Trigonal
Luster: Vitreous - Resinous
Color: green, yellow green
Class: Trigonal - Ditrigonal Pyramidal
Hardness: 3.5

Collection: Bill Wilson Collection
Special Info: Type Locality

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

SOLD

Ferrimolybdite

with Molybdenite - #BW58859

Details
Data
Provenance
Resources

Locality: Little Cottonwood Canyon, Wasatch Mts, Salt Lake Co., Utah, United States
Formula: Fe³⁺₂(Mo⁶⁺O₄)₃·7H₂O
Availability: Sold
Size: 6.5 x 5 x 5.5 cm - Sm Cabinet

Straw yellow matted and fibrous Ferrimolybdite with good rich coverage in many vugs with plates of Molybdenite to 2mm, Quartz and a weird 2mm cavernous Pyrite.

Ferrimolybdite

Formula: Fe³⁺₂(Mo⁶⁺O₄)₃·7H₂O
Crystal System: Orthorhombic
Crystal Habit: Earthy, Scaly, Fibrous
Cleavage: Distinct, None, None
Luster: Silky
Color: yellow, canary yellow, sulfur yellow
Streak: light yellow
Class: Orthorhombic
Fracture: Uneven
Hardness: 2.5-3

Collection: Bill Wilson Collection

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

Fluorite

#58868

$40.00 - Available
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Details
Data
Provenance
Resources

Locality: Melchor Múzquiz, Coahuila, Mexico
Formula: CaF₂
Availability: Available
Price: $40.00
Size: 4.5 x 4 x 4 cm - Miniature

Light purple Flourite crystals.

Fluorite

Formula: CaF₂
Crystal System: Isometric
Crystal Habit: Crystalline - Coarse, Massive - Granular, Disseminated
Cleavage: Three perfect, octahedral cleavages.
Luster: Vitreous (Glassy)
Color: purple, clear, yellow, green, red, blue
Streak: white
Geological Setting: Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments
Class: Isometric - Hexoctahedral
Fracture: Uneven
Hardness: 4

Collection: Willard L. Roberts Collection

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

SOLD

Fluorluanshiweiite

with Spodumene - #57768

Details
Provenance
Resources

Locality: Shuk-Byul' peg., Sol'bel'der peg. field, Sangilen Uppland, Tuva, Siberia, Russia
Formula: KLiAl_1.5(Si_3.5Al_0.5)O₁₀F₂
Availability: Sold
Size: 3.5 x 2 x 3 cm - Miniature
Special Info: XRD Confirmed
Special Info: EDS Confirmed

Rich groups of lilac lamellae to 7mm. It is micaceous and in fact is a lithium Mica. This is the second worldwide locality, which is apparently not yet published. It is associated with Spodumene, a lithium silicate. Verified by Dr. Igor Pekov.

Special Info: XRD Confirmed
Special Info: EDS Confirmed

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

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