Manganese ore in New Zealand
作者:
J.J. Reed,
期刊:
New Zealand Journal of Geology and Geophysics
(Taylor Available online 1960)
卷期:
Volume 3,
issue 3
页码: 344-354
ISSN:0028-8306
年代: 1960
DOI:10.1080/00288306.1960.10422080
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Manganese ore in New Zealand can be divided into: (a) manganese gangue in auriferous quartz lodes; (b) manganese pockets or masses associated with contemporaneous “Red Rocks” in Permian–Cretaceous sediments; and (c) manganese pockets or lenses associated with metamorphosed “Red Rocks” in regionally metamorphosed schists. All the manganese mined has come from Permian–Jurassic rocks in (b), the characteristic features of the deposits being their patchiness and their close association with “Red Rocks” that are intercalated as scattered subordinate masses in the dominant greywackes and argillites. The “Red Rocks” consist of spilitic lavas, jaspers, cherts, volcanic argillites and carbonate, and the manganese is considered to have been precipitated during the submarine volcanism.
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