• Calcite With Duftite and Conichalcite
  • Calcite With Duftite and Conichalcite
  • Calcite With Duftite and Conichalcite
  • Calcite With Duftite and Conichalcite
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Calcite With Duftite and Conichalcite

ID: CC1619

A super specimen of Calcite with Duftite and Conichalcite from the Tsumeb Mine, Namibia. The specimen displays two crystal habits of Calcite dominated by 'nail head' crystals to 2cm tall. The 'nail head' Calcites are lustrous translucent white passing upwards into colourless gemmy shallow pyramidal terminations. The 'nail head' Calcite crystals are lightly covered mostly on the terminations by light green Duftite. A second generation of sharply rhombic Calcite in colourless gemmy crystals has grown about the 'nail head' crystals in parallel orientation. In contrasting addition the specimen also has deep green crystalline spherulites of Conichalcite scattered over crystal faces of the first generation Calcite, and included in the second rhombic Calcite phase, suggesting it formed between the two Calcite phases. The underside of the specimen also has large intergrown modified rhombs of Calcite measuring to 1.5cm with scattered spherulites of deep green Conichalcite. The matrix supporting the Calcite crystals is a thin shell of creamy to pinkish Dolomite with red-brown Goethite. A great Calcite specimen plus extras from Tsumeb, in a wonderful display.

Details

Dimensions
14.0 × 7.0 × 5.5 cm
Categories
Locality
Tsumeb Mine, Tsumeb, Oshikoto Region (Otjikoto Region), Namibia

Minerals on Specimen

Minerals on specimen
Calcite

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