A Klerksdorp sphere. It is 3 to 4 centimetres (1.2 to 1.6 in) in maximum diameter and 2.5 centimetres (0.98 in) in thickness.
Klerksdorp spheres are small objects, often spherical to disc-shaped, that have been collected by miners and rockhounds from 3-billion-year-old pyrophyllite deposits mined by Wonderstone Ltd., near Ottosdal, South Africa. They have been cited by pseudoscientists and reporters in books,[1][2] popular articles,[3][4] and many web pages[5][6] as inexplicable out-of-place artifacts that could only have been manufactured by intelligent beings. Geologists who have studied these objects have concluded that the objects are not manufactured, but are rather the result of natural processes.[7][8][9][10]
^Cremo, M., and R.L. Thompson, 1993, Forbidden Archeology: The Hidden History of the Human Race: Torchlight Publishing. ISBN0-89213-294-9
^Cremo, M., and R.L. Thompson, 1999, The Hidden History of the Human Race: Torchlight Publishing. ISBN0-89213-325-2
^Barritt, D., 1982, The Riddle of the cosmic cannon-balls: Scope Magazine. (June 11, 1982)
^Jochmans, J. R., 1995, Top ten out-of-place artifacts: Atlantis Rising. no. 5, pp. 34–35, 52, 54. (Fall 1995)