Bournonite

#WR53535

SOLD

Availability: Sold

Locality: Grube George, Horhausen, Rhineland - Pfalz, Germany
Formula: CuPbSbS₃
Size: 7 x 6 x 3.5 cm - Sm Cabinet
Tagged: sulfide, copper

Great antique specimen, highly lustrous with very reflective faces off of numerous 3-6mm crystals. It's in good shape and carries an older inked label and a US National museum label, see prov. tab.

Bournonite at Dakota Matrix Bournonite at WebMineral Bournonite at MinDat

Cacoxenite

#DO53047

SOLD

Availability: Sold

Locality: Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
Formula: (Fe³⁺)₂₄AlO₆(PO₄)₁₇(OH)₁₂·75H₂O
Size: 6 x 5 x 5 cm - Sm Cabinet
Tagged: phosphate

It's a mind-blower under the scope. These golden sprays are less than 1mm in size but their color and perfection make them seem life size under the scope.

Collected by Don Owens. The material is simply not available any longer. The pits are closed, flooded, and highly guarded.

Cacoxenite at Dakota Matrix Cacoxenite at WebMineral Cacoxenite at MinDat

Calcite on Quartz var. amethyst

#WR53518

Availability: Available
Price: $65.00

Locality: Guanajuato, Guanajuato, Mexico
Formula: CaCO₃
Size: 9 x 6.5 x 5 cm - Sm Cabinet
Tagged: carbonate

3-5mm colorless, nail-head, Calcite crystals on soft, frosted amethyst crystals.

Calcite at Dakota Matrix Calcite at WebMineral Calcite at MinDat

Calcite

#WR53519

Availability: Available
Price: $150.00

Locality: Charcas, San Luis Potosi, Mexico
Formula: CaCO₃
Size: 13 x 7 x 6 cm - Cabinet
Tagged: carbonate

Classic locality for this form of Calcite known as "poker-chip calcite". This one is in great shape with the largest crystal to 6cm. All the crystals have that unique grey band at the center.

Calcite at Dakota Matrix Calcite at WebMineral Calcite at MinDat