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. ISBN 0-89213-294-9
- ^ Cremo, M., and R.L. Thompson, 1999, The Hidden History of the Human Race: Torchlight Publishing. ISBN 0-89213-325-2
- ^ 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)
- ^ Barton, J., nd, The Grooved Spheres Archived 2020-08-06 at the Wayback Machine: Mysteries of the World web site
- ^ "Psybertronist", nd, A balanced and concentric ringed mystery spheroid as purportedly anomalous "out-of-place artifacts" Archived 2008-12-03 at the Wayback Machine
- ^ Cairncross, B., 1988, "Cosmic cannonballs" a rational explanation: The South African Lapidary Magazine. v. 30, no. 1, pp. 4–6. (Full text via ResearchGate.)
- ^ Heinrich, P.V., 1997, Mystery spheres: National Center for Science Education Reports. v. 17, no. 1, p. 34. (January/February 1997)
- ^ Heinrich, P.V., 2007, South African concretions of controversy: South African Lapidary Magazine. vol. 39, no. 1, pp. 7–11.
- ^ Heinrich, P.V., 2008, The Mysterious "Spheres" of Ottosdal, South Africa. National Center for Science Education Reports, v. 28, no. 1, pp. 28–33.[1]