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Rare Minerals Specimens

Tuesday, 24 January 2023 04:00 PM

Introducing the "Rare Minerals Specimens" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including decrespignyite-(y), edgarite, eglestonite, gold and more from places like Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia, Khibiny Massif, Kola Peninsula, Russia, Cahill mine, Humboldt Co., Nevada, United States, Harvard mine, Jamestown, Tuolumne Co., California, United States.

SOLD

Decrespignyite-(Y) - 59801

Decrespignyite-(Y) - 59801

Decrespignyite-(Y)

#59801

Details
Data
Provenance
Resources

Locality: Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia
Formula: Y₄Cu(CO₃)₄Cl(OH)₅·2H₂O
Availability: Sold
Size: 5 x 3 x 1 cm - Miniature
Tagged: carbonate , REE mineral
Special Info: Type Locality

Rich specimen with all sky blue Decrespignyite-(Y).

Decrespignyite-(Y)

Formula: Y₄Cu(CO₃)₄Cl(OH)₅·2H₂O
Crystal System: Monoclinic
Crystal Habit: Efflorescences, Globular
Cleavage: None, None, None
Luster: Vitreous - Pearly
Color: intense royal blue, turquoise blue
Streak: pale blue
Class: Monoclinic
Hardness: 4

Special Info: Type Locality

Mineralpedia: View Decrespignyite-(Y)
On Dakota Matrix: Previously Sold Decrespignyite-(Y)
On Dakota Matrix: Other Available Decrespignyite-(Y)
WebMineral: View Decrespignyite-(Y)
Mindat: View Decrespignyite-(Y)

SOLD

Edgarite - BAC60900

Edgarite - BAC60900

Edgarite

#BAC60900

Details
Data
Provenance
Resources

Locality: Khibiny Massif, Kola Peninsula, Russia
Formula: FeNb₃S₆
Availability: Sold
Size: 1.5 x 1 x 1 cm - Thumbnail
Tagged: sulfide

Edgarite is an unusual nioboum sulfide. It is the only niobium sulfide known. On this specimen it occurs as 1-2mm silvery crystal plates. This is the only locality to date.

Edgarite

Formula: FeNb₃S₆
Crystal System: Hexagonal
Crystal Habit: Platy
Cleavage: Perfect, None, None
Luster: Metallic
Color: dark gray, black
Class: Hexagonal - Trapezohedral
Hardness: 2-2.5

Collection: William & Anne Cook Collection

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

SOLD

Eglestonite - BAC60758

Eglestonite - BAC60758

Eglestonite

with Cinnabar - #BAC60758

Details
Data
Provenance
Resources

Locality: Cahill mine, Humboldt Co., Nevada, United States
Formula: Hg¹⁺₆OCl₃(OH)
Availability: Sold
Size: 2 x 2 x 1 cm - Thumbnail

Yellow earthy coatings on Cinnabar.

Eglestonite

Formula: Hg¹⁺₆OCl₃(OH)
Crystal System: Isometric
Cleavage: None, None, None
Luster: Adamantine - Resinous
Color: brown, brownish yellow, yellow, dark brown, orange
Streak: light yellow
Class: Isometric - Hexoctahedral
Fracture: Brittle - Conchoidal
Hardness: 2-3

Collection: William & Anne Cook Collection

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

Gold - 58812

Gold - 58812

Gold

#58812

$295.00 - Available
Details
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Details
Data
Provenance
Resources

Locality: Harvard mine, Jamestown, Tuolumne Co., California, United States
Formula: Au
Availability: Available
Price: $295.00
Size: 3.5 x 2.5 x 1.5 cm - Miniature
Tagged: native element

Leaf Gold 1.3 x 1.5cm in milky Quartz. Very nice specimen.

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

Gold - 58813

Gold - 58813

Gold

#58813

$195.00 - Available
Details
Add to Cart
Add to Favorites

Details
Data
Provenance
Resources

Locality: Harvard mine, Jamestown, Tuolumne Co., California, United States
Formula: Au
Availability: Available
Price: $195.00
Size: 2.6 x 1.3 x 1 cm - Thumbnail
Tagged: native element

A 6 x 7mm Gold leaf with more in Quartz matrix.

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

SOLD

Gold - 58815

Gold - 58815

Gold

#58815

Details
Data
Provenance
Resources

Locality: Harvard mine, Jamestown, Tuolumne Co., California, United States
Formula: Au
Availability: Sold
Size: 3 x 3 x 1.7 cm - Thumbnail
Tagged: native element

Stringers of Gold lacing milky white Quartz with the largest leaf to 1.2cm.

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

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