Thaumasite
Origin: N'Chwaning mine, Kuruman, No. Cape, South Africa
Owner: Lou Perloff
Microscopic image
Photo-Atlas
of Minerals
Origin: Schellkopf, Brenk, Eifel Mts, Rhineland-Palatinate, Germany
Picture size: 3.5 mm
Owner: Thomas Witzke
This specimen has a couple of zones of thaumasite crystals. The largest
crystals are about 3-4 mm in length.
Apophyllite,
barite
and
thomsonite are also found. The matrix and minerals present suggest that
this specimen came from the Lundströms Ort workings in the mine from around
1917 according to Flink. The
thomsonite identification is based on the red fluorescence under SW UV
light.
Origin: Långban, Sweden
Harry von Eckermann Collection
Sample size: 7.3 x 4 x 3.5 cm
Origin: N'Chwaning Mine, Kuruman, South Africa, Africa
Sample size: 2.3 x 1.7 x 1.4 cm
John Veevaert, Trinity Mineral Co
Origin: Black Rock Mine, near Kuruman, South Africa
Sample size: 1.1 x 0.9 x 0.6 cm (top left), 1.1 x 0.6 cm (top right), 0.8 x
0.6 x 0.5 cm (2nd/bottom row)
Origin: N’Chwaning II Mine, Kalahari Manganese Field, Northern Cape Prov., S.
Africa
Sample size: 1 x 0.9 x 0.8 cm (top), 1.5 x 0.5 x 0.4 cm (2nd row), 0.9 x 0.6 x
0.6 cm (bottom)
Fibrous white micro crystals to 3 mm as vein fillings or replacements in
matrix.
Origin: Commercial quarry, Crestmore, Riverside Co., California, United
States
Sample size: 4.5 x 4.5 x 2 cm
Page 2
Page 3
