 | | Book | | Struik Nature (an imprint of Penguin Random House South Africa (Pty) Ltd) Reg. No. 1953/000441/07 The Estuaries...Century City, 7441 PO Box 1144, Cape Town, 8000 South Africa Visit www.randomstruik.co.za and join the Struik...published edition, 2015: Penguin Random House South Africa (Pty) Ltd Publisher: Pippa Parker Managing editor:...Hatfield Campus, University of Pretoria Pretoria, South Africa Dr Lynnette Greyling Department of Geological...Town Private Bag X3 Rondebosch 7701 Cape Town, South Africa Note: The authors and the publishers cannot |  | | Book | | contents, say of lead or bismuth or uranium ? Is it a local, continuous, comparatively superficial cycle, t...parallel texture seen in the photograph is only a very local feature 13 14 T H E ORE MINERALS 4. Deposits...extents 3* 18 T H E ORE MINERALS according to the local conditions. The solutions, up to now fluid (supercritical)...even though there are occasionally very strong local alterations. The delimitation of the various groups...celestite. Hematite veins and replacements retain only local significance, but became recently important through |
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