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epithermal gold deposits. styles, characteristics and exploration

low sulphidation epithermal gold deposits

EPITHERMAL GOLD DEPOSITS: STYLES, CHARACTERISTICS AND EXPLORATION. Noel C. White1 and Jeffrey W. Hedenquist2. 1BHP Minerals International Exploration, 229 Shepherds Bush Road, London W6 7AN, U.K.. 2Mineral Resources Dept., Geological Survey of Japan, 1-1-3 Higashi, Tsukuba 305, Japan.
Epithermal Gold Deposits Part II. Geology and Gold Deposits of the Oatman District,. Northwestern Arizona. By ED DEWITT, JON P. THORSON, and ROBERT C. SMITH. Geology and Gold Deposits of the Marysville. Mining District, Montana. By JAMES W. WHIPPLE. Gold Deposits of the Boulder County. Gold District
Epithermal gold deposits are highly variable in form, ranging from thin quartz veins to large disseminated deposits, and are located in a variety of geological environments. Consequently, they exhibit a wide range of geophysical signatures. Hydrothermal alteration accompanying these de- posits causes pronounced
What is Epithermal Gold? Why is the Epithermal Deposit type Important? Do Epithermal gold prospects occur in Newfoundland and Labrador? Why should Prospectors be interested in exploring for Epithermal Gold? Where are Epithermal Gold Deposits formed? How are Epithermal Gold Deposits Formed? Types of
Barite Hill represents a possible example of a high-sulphidation- style, gold-rich VMS deposit. The style of mineralization at Ridgeway and Haile mines is more unclear, and both syn-metamorphic and metamorphosed epithermal origins have been argued for these deposits. To date, classic low-sulphidation-style epithermal
The successful exploration geologist uses knowledge of geologic relationships and ore-deposit styles, tempered by experience, to interpret all information available from a given prospect in order to develop an understanding of its mineral potential. In the case of exploration for epithermal gold deposits, this understanding
13 Oct 2014 Origin of features, background. • Case examples, variations. Lithocaps and high- to intermediate- sulfidation epithermal deposits. Exploration implications. Jeffrey W. Hedenquist. Ottawa, Canada. Universite de Geneve : 13 October 2014 . Location of Principal Epithermal Gold Deposits. Eastern. Pacific. Belt.
developed for subsets of gold deposits such as those considered to be epithermal (Heald et al., 1987), intrusion-related (Sillitoe, 1991), bulk- mineable (Bonham, 1989) or epigenetic Archean (Gebre-Mariam et al.,. 1995). These have provided additional points of view and expanded the nomenclature surrounding the
Epithermal Gold Deposits : their characteristics & modeling. Department of Geology. &. School of Environmental Studies. University of Delhi. Delhi-110007. India. Prof. Mihir Deb
Epithermal gold (± Cu & Ag) deposits form at shallower crustal levels than porphyry Cu-Au systems, and are primarily distinguished as low and high sulphidation using criteria of varying gangue and ore mineralogy, deposited by the interaction of different ore fluids with host rocks and groundwaters. Low sulphidation

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March 2018