Origin: Shinkolobwe mine, Katanga, Congo
Sample size: top 4 x 3 x 2 cm, bottom 4 x 2 x 2 cm, crystals to 8 mm
Origin: Mounana, Gabon
Sample size: 9 x 6 x 4 cm, crystals to 1.5 mm
Origin: Bald Mountain area, Lawrence Co., South Dakota, USA
Sample size: about 4 cm (microprobe confirmed)
Origin: Bald Mountain area, Lawrence Co., South Dakota, USA
Sample size: about 4 cm (microprobe confirmed)
Dakota Matrix Minerals
Origin: Waldschacht Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony,
Germany
Picture size: 7 mm
Owner: Thomas Witzke
Origin: Old Gunnislake Mine, Cornwall, England
Sample size: 2.5 x 2 x 1 cm
Origin: Musonoi Mine, Shaba, Congo (Zaire)
Ex. M. Dodge collection
Sample size: 3.1 x 2.2 x 2 cm
Books of light green crystals to one centimeter across, isolated on an
ironstone matrix.
Origin: Mount Painter No. 2 workings, Mt Painter, Flinders Ranges, South
Australia, Australia
Sample size: 4.5 x 3.3 x 2.8 cm