Klerksdorp sphere
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English[edit]
Pronunciation[edit]
- Rhymes: -ɪə(ɹ)
Noun[edit]
Klerksdorp sphere (plural Klerksdorp spheres)
- A small object, often spherical to disc-shaped, found in three-billion-year-old pyrophyllite deposits mined near Ottosdal in South Africa, and thought to have originated as concretions in ancient accumulated volcanic sediments or ash.