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Mixed Minerals

Friday, 15 July 2022 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including gold, gugiaite, hydroboracite, inesite, and natrobistantite and more from places like Harvard mine, Jamestown, Tuolumne Co., California, United States, Dugdu alkaline complex, Tuva, Siberia, Russia, Kohnstein quarry, Niedersachswerfen, Harztor, Thuringia, Germany, Hale Creek mine, Trinity Co., California, United States, and Koktokay pegmatite field, Altay, Xinjiang, China.

Gold - RG58804

Gold - RG58804

Gold

#RG58804

$495.00 - Available
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Locality: Harvard mine, Jamestown, Tuolumne Co., California, United States
Formula: Au
Availability: Available
Price: $495.00
Size: 3.2 x 2.6 x 1.5 cm - Miniature
Tagged: native element

An excellent specimen with good eye-appeal. This piece features leaf Gold strung out along 1.5cm in Quartz matrix. The largest leaf is 5mm across.

Gold

Formula: Au
Crystal System: Isometric
Crystal Habit: Arborescent, Platy, Granular
Cleavage: None, None, None
Luster: Metallic
Color: yellow, pale yellow, orange, yellow white, reddish white
Streak: yellow
Class: Isometric - Hexoctahedral
Fracture: Hackly
Hardness: 2.5-3

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

Gugiaite - 57774

Gugiaite - 57774

Gugiaite

#57774

$45.00 - Available
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Locality: Dugdu alkaline complex, Tuva, Siberia, Russia
Formula: Ca₂BeSi₂O₇
Availability: Available
Price: $45.00
Size: Capsule
Special Info: XRD Confirmed

This is a tiny 1mm specimen with a colorless Gugiaite crystal attached. Gugiaite is a very rare beryllium oxide. Verified by Dr, Igor Pekov.

Gugiaite

Formula: Ca₂BeSi₂O₇
Crystal System: Tetragonal
Cleavage: Perfect, Distinct, Indistinct
Luster: Vitreous (Glassy)
Color: colorless
Streak: white
Class: Tetragonal - Scalenohedral
Fracture: Uneven
Hardness: 3-4

Special Info: XRD Confirmed

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

Hydroboracite - BW58793

Hydroboracite - BW58793

Hydroboracite

#BW58793

$40.00 - Available
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Locality: Kohnstein quarry, Niedersachswerfen, Harztor, Thuringia, Germany
Formula: CaMg[B₃O₄(OH)₃]₂·3H₂O
Availability: Available
Price: $40.00
Size: 5 x 1.5 x 1 cm - Miniature

A waterclear crystal.

Hydroboracite

Formula: CaMg[B₃O₄(OH)₃]₂·3H₂O
Crystal System: Monoclinic
Crystal Habit: Fibrous, Foliated
Cleavage: Perfect, None, None
Luster: Vitreous - Silky
Color: colorless, greenish, white, light brown, wine yellow
Streak: white
Class: Monoclinic - Prismatic
Hardness: 2

Collection: Bill Wilson Collection

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

Inesite - 58559

Inesite - 58559

Inesite

#58559

$150.00 - Available
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Locality: Hale Creek mine, Trinity Co., California, United States
Formula: Ca₂Mn²⁺₇Si₁₀O₂₈(OH)₂·5H₂O
Availability: Available
Price: $150.00
Size: 7 x 4.5 x 4 cm - Sm Cabinet

Pink elongated tabular crystals to 2mm lining the many vuggy areas of this specimen. The color is a little less intense.

Inesite

Formula: Ca₂Mn²⁺₇Si₁₀O₂₈(OH)₂·5H₂O
Crystal System: Triclinic
Crystal Habit: Radial, Massive - Fibrous, Spherical
Cleavage: Perfect, Good, None
Luster: Vitreous (Glassy)
Color: brown, brown, pink, orange
Streak: white
Class: Triclinic - Pinacoidal
Fracture: Brittle - Uneven
Hardness: 6

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

Natrobistantite - BW58790

Natrobistantite - BW58790

Natrobistantite

#BW58790

$25.00 - Available
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Locality: Koktokay pegmatite field, Altay, Xinjiang, China
Availability: Available
Price: $25.00
Size: 1.1 x 0.7 x 0.5 cm - Thumbnail

A few tiny grains less than 1mm in polished probe epoxy. Natrobistantite is discredited bismuth-tantalum-niobium-antimony oxide.

Natrobistantite

Formula: (Na,Cs)Bi(Ta,Nb,Sb)4O12
Crystal System: Isometric
Crystal Habit: Aggregates, Octahedral Crystals
Cleavage: None, None, None
Luster: Adamantine
Color: blue green, colorless, green, yellow green
Streak: white
Class: Isometric - Hexoctahedral
Hardness: -

Collection: Bill Wilson Collection

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

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