Near-surface hydrothermal activity in the eastern Otago schist (Note)
作者:
D. Craw,
S.A. McKeag,
期刊:
New Zealand Journal of Geology and Geophysics
(Taylor Available online 1987)
卷期:
Volume 30,
issue 4
页码: 437-443
ISSN:0028-8306
年代: 1987
DOI:10.1080/00288306.1987.10427547
出版商: Taylor & Francis Group
关键词: gold;stibnite;fluid inclusions;Otago schist;hydrothermal
数据来源: Taylor
摘要:
The quartz-gold-stibnite-bearing Consolidated Lode at Nenthorn, eastern Otago, contains abundant prismatic quartz crystals and hydrothermal breccia. Fluid inclusion data imply that boiling occurred during mineral deposition at about 190°C at very shallow levels, possibly within 120 m of the surface. This type of vein system may be common in eastern Otago. Gold may be found beneath Sb and/or Hg deposits formed by similar near-surface hydrothermal activity.
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