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Mixed Minerals

Friday, 22 April 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 ankerite, artinite, balangeroite, baryte, betekhtinite, and briartite and more from places like Niederschlema, Schlema dist., Erzgebirge, Saxony, Germany, Staten Island, New York City, Richmond Co., New York, United States, Poggio San Vittore Mine, Lanzo Valley, Piedmont, Italy, Elmwood mine, Smith Co., Tennessee, United States, Dzhezkazgan mine, Karagandy, Kazakhstan, and Tsumeb mine, Tsumeb, Namibia.

Ankerite

ps after Calcite - #BC52613

$175.00 - Available
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Locality: Niederschlema, Schlema dist., Erzgebirge, Saxony, Germany
Formula: CaFe²⁺(CO₃)₂
Availability: Available
Price: $175.00
Size: 10 x 6 x 2.5 cm - Cabinet
Tagged: carbonate

An attractive specimen with tiny white rhombic crystals of Ankerite which replaced Calcite. The black specks are Hematite. It comes with two Freiberg museum labels (prov. tab) from 1992 by the Barbara and the late, highly regarded Forrest Cureton, a friend of mine.

Ankerite

Formula: CaFe²⁺(CO₃)₂
Crystal System: Trigonal
Crystal Habit: Crystalline - Coarse, Massive, Granular
Cleavage: Perfect, Perfect, Perfect
Luster: Vitreous (Glassy)
Color: brown, brownish yellow, gray, gray brown, white
Streak: white
Class: Trigonal - Rhombohedral
Fracture: Sub Conchoidal
Hardness: 3.5-4

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

SOLD

Artinite

#RS57643

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Locality: Staten Island, New York City, Richmond Co., New York, United States
Formula: Mg₂CO₃(OH)₂·3H₂O
Availability: Sold
Size: 6 x 5 x 2.5 cm - Sm Cabinet
Tagged: carbonate

Crusts composed of delicate white needles on serpentinized matrix associated with minor Hydromagensite.

Artinite

Formula: Mg₂CO₃(OH)₂·3H₂O
Crystal System: Monoclinic
Crystal Habit: Prismatic, Radial, Encrustations
Cleavage: Perfect, Good, None
Luster: Silky
Color: white
Streak: white
Class: Monoclinic
Fracture: Uneven
Hardness: 2.5

Collection: RC Stamberg Collection

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

SOLD

Balangeroite

#BW58075

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Locality: Poggio San Vittore Mine, Lanzo Valley, Piedmont, Italy
Formula: Mg₂₁Si₈O₂₇(OH)₂₀
Availability: Sold
Size: 4.5 x 0.1 x 0.1 cm - Miniature
Special Info: Type Locality

Slender golden, fibrous crystals to 4.5cm. Balangeroite is a rare inosilicate found in schistose serpentinite in proximity to a large ultramafic massif. It is a one-locality mineral.

Balangeroite

Formula: Mg₂₁Si₈O₂₇(OH)₂₀
Crystal System: Monoclinic
Crystal Habit: Fibrous
Cleavage: Very Good, Very Good, None
Luster: Vitreous - Greasy
Color: brownish yellow, dark brown
Streak: brownish white
Class: Monoclinic - Prismatic
Hardness: -

Collection: Bill Wilson Collection
Special Info: Type Locality

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

Baryte

on Sphalerite - #BC52707

$125.00 - Available
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Locality: Elmwood mine, Smith Co., Tennessee, United States
Formula: BaSO₄
Availability: Available
Price: $125.00
Size: 5.5 x 5.5 x 5.5 cm - Sm Cabinet

Spheroidal aggregate of yellow, malformed, Baryte crystals on found at the Elmwood mine. At the base are greasy looking, dark reddish brown Sphalerite crystals to 2cm.