Browsing by Supervisor "Twist, D."

Now showing items 1-4 of 4

A geochemical and petrographical investigation of the low-grade tin deposits in the Bobbejaankop granite at the Zaaiplaats Tin Mine

Coetzee, Japie (University of Pretoria, 1984)

Low-grade tin deposits occur within the apex of the Bobbejaankop Granite intrusion at the Zaaiplaats Tin Mine. The finegrained hood-facies of the Bobbejaankop Granite, called the Lease Granite, seems to be intrusive ...
The Geochemistry and petrology of the roofrocks of the Bushveld complex east of Groblersdal

Kleemann, Gunther Johann (University of Pretoria, 1985)

Please read the abstract in the section 00front of this document
A geological investigation of upper Transvaal sequence rocks in the northern portion of the Rooiberg fragment

Richards, Ralph John (University of Pretoria, 1987)

The stratigraphy , sedimentology and geochemistry of. the upper Transvaal Sequence rocks in the northern portion of the Rooiberg Fragment are researched. The Leeuwpoort Formation of the Pretoria Group was deposited in ...
The Dullstroom basalt formation and the Rooiberg group : volcanic rocks associated with the Bushveld complex

Schweitzer, Joachim-Klaus (University of Pretoria, 1998)

The aims of this study are twofold. First is to investigate the potential link between the predominantly volcanic Dullstroom Basalt Formation and the Rooiberg Group (both units formerly considered as part of the Transvaal ...

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