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Mixed Minerals

Sunday, 21 February 2021 06:00 PM

Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including strengite, tellurobismuthite, wavellite, weloganite, and wulfenite and more from places like Indian Mountain, Cherokee Co., Alabama, United States, American Nettie mine, Gold Hill dist., Ouray Co., Colorado, United States, Burnett Gap, Cocke Co., Tennessee, United States, Francon quarry, Montreal, Quebec, Canada, and Bleiberg, Carinthia, Austria.

SOLD

Strengite

#19900

Details
Data
Provenance
Resources

Locality: Indian Mountain, Cherokee Co., Alabama, United States
Formula: Fe³⁺PO₄·2H₂O
Availability: Sold
Size: 12 x 11 x 7 cm - Cabinet
Tagged: phosphate

Large specimen with scattered purple Strengite crystals to 1-2mm.

Strengite

Formula: Fe³⁺PO₄·2H₂O
Crystal System: Orthorhombic
Crystal Habit: Spherical, Radial, Botryoidal
Cleavage: Good, Poor, None
Luster: Vitreous (Glassy)
Color: colorless, pale violet, deep violet, red, carmine red
Streak: white
Class: Orthorhombic - Dipyramidal
Fracture: Brittle - Conchoidal
Hardness: 3.5

Collection: Fred DeVito Collection

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

SOLD

Tellurobismuthite

with Tetradymite - #55201

Details
Data
Provenance
Resources

Locality: American Nettie mine, Gold Hill dist., Ouray Co., Colorado, United States
Formula: Bi₂Te₃
Availability: Sold
Size: 3 x 1.5 x 1.5 cm - Thumbnail
Tagged: tellurium
Special Info: EDS Confirmed

Brilliant, granular crystals of Tellurobismutite with minor Tetradymite. This specimen is out of the old Dan Erling stock, a mineral dealer out of Millwaukie, Wisconsin. The specimens that I have were originally labeled at Tetradymite. In 2008, I had some analyzed with EDS, which identified the Tellurobismutite. Tetradymite was also detected as well as trace Chalcopyrite and Xenotime. Visually alot of it appears to be Hessite, but there is considerable Bismuth (50-52%).

Tellurobismuthite

Formula: Bi₂Te₃
Crystal System: Trigonal
Crystal Habit: Massive - Fibrous, Platy
Cleavage: Perfect, None, None
Luster: Metallic
Color: pale gray
Streak: lead gray
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Flexible
Hardness: 1.5-2

Special Info: EDS Confirmed

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

SOLD

Wavellite

#WR55193

Details
Data
Provenance
Resources

Locality: Burnett Gap, Cocke Co., Tennessee, United States
Formula: Al₃(PO₄)₂(OH)₃·5H₂O
Availability: Sold
Size: 5 x 5 x 4.5 cm - Miniature
Tagged: phosphate

White radiating crystals.

Wavellite

Formula: Al₃(PO₄)₂(OH)₃·5H₂O
Crystal System: Orthorhombic
Crystal Habit: Stellate, Radial, Stalactitic
Cleavage: Perfect, Good, None
Luster: Vitreous - Pearly
Color: blue, brown, brownish black, colorless, green
Streak: white
Class: Orthorhombic - Dipyramidal
Fracture: Fibrous
Hardness: 3.5-4

Collection: Willard L. Roberts Collection

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

SOLD

Weloganite

#WR55189

Details
Data
Provenance
Resources

Locality: Francon quarry, Montreal, Quebec, Canada
Formula: Na₂Sr₃Zr(CO₃)₆·3H₂O
Availability: Sold
Size: 8.5 x 5 x 3.5 cm - Sm Cabinet

Three good crystals on this specimen: one is 10mm and the other two are less than 6mm across. Weloganite crystals are shaped like whirling tornados with a slight yellow color.