Gratonite
Origin: Excelsior mine, Cerro de Pasco, Peru
Sample size: 1 cm crystal aggregate with 3 mm individual crystals (top left), 1.5
cm crystal group with 1 mm crystals (top right), 5 x 2 x 3 cm (bottom)
Dark grey, metallic crystal grains throughout matrix with
sphalerite.
Origin: Segen Gottes Mine, Wiesloch, Heidelberg, Baden, Germany
Ex. Kidwell collection
Sample size: 4 x 4 x 2 cm
Origin: Excelsior Mine, Cerro de Pasco , Peru (type locality)
Sample size: 2 x 1.7 x 1.7 cm (top/2nd row), 1.7 x 1.6 x 1.5 cm (3rd/4th
row), 1.2 x 1.2 x 0.7 cm (bottom)
Ex Tom Dwyer Collection
Origin: Cerro de Pasco district, Alcides Carrion Province, Pasco Department,
Peru
Sample size: 5.2 x 2.8 x 1.8 cm (top), 5.3 x 2.8 x 1.7 cm (bottom)
Origin: Excelsior Mine, Cerro de Pasco, Alcides Carrión Province, Pasco
Department, Peru
Sample size: 4.1 x 2.2 x 3.2 cm
Origin: Rio Tinto Mines, Huelva, Andalusia, Spain
Sample size: 5.1 x 3.8 x 2.2 cm
Origin: Excelsior Mine, Cerro de Pasco, Pasco, Peru
Sample size: micromount
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