Černýite

#64763

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Availability: Sold

Featured: Featured in Special Editions
Locality: Hugo mine, Pennington Co., South Dakota, United States
Formula: Cu₂CdSnS₄
Size: 0.9 x 0.6 x 0.3 cm - Thumbnail
Tagged: sulfide, copper, tin
Special Info: Co-Type Locality

Silvery black metallic mass of rare Černýite from the co-type locality, the Hugo pegmatite. The Hugo pegmatite is less than a quarter mile from the famous Etta pegmatite.

Černýite at WebMineral Černýite at MinDat

Ceruleite

#BAC62434

Availability: Available
Price: $45.00

Locality: Wheal Gorland, St. Day dist., Cornwall, England
Formula: Cu₂Al₇(AsO₄)₄(OH)₁₃·12H₂O
Size: 7 x 4.5 x 2 cm - Sm Cabinet
Tagged: arsenate, copper

Light blue coatings.

Ceruleite at Dakota Matrix Ceruleite at WebMineral Ceruleite at MinDat

Cesbronite

#BW59507

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Availability: Sold

Locality: Bambollita mine, Moctezuma, Sonora, Mexico
Formula: Cu₅(Te⁴⁺O₃)₂(OH)₆·2H₂O
Size: 4 x 3 x 3 cm - Miniature
Tagged: copper, tellurium
Special Info: Type Locality

Green radial pod-like crystal groups to 1mm across. Rich, excellent specimen and very rare only found at three localities worldwide.

Cesbronite at Dakota Matrix Cesbronite at WebMineral Cesbronite at MinDat

Chkalovite

#63671

Availability: Available
Price: $60.00

Locality: Shkatulka peg., Umbozero mine, Alluaiv Mt., Lovozero, Kola Peninsula, Russia
Formula: Na₂BeSi₂O₆
Size: 2 x 2 x 1.2 cm - Thumbnail
Tagged: beryllium
Special Info: XRD Confirmed
Special Info: EDS Confirmed

White, translucent crystalline specimen. Chkalovite is a rare beryllium silicate described in 1939, found Quebec, Greenland and Russia. This specimen is composed of nearly all white to clear Chkalovite. It was identified by Dr. Igor Pekov.

Chkalovite at WebMineral Chkalovite at MinDat