By Edward I. Erlich, W. Dan Hausel
The fabric present in Diamond Deposits presents a starting place for discussing one of the most primary difficulties of theoretical geology, reminiscent of the timing of geological occasions and the improvement of cratonic parts. Written for geologists and diamond prospectors, this e-book offers a normal assessment of diamond exploration and exploitation. The textual content covers how to define, realize, and evaluation the potential for diamond deposits. The publication deals examples of those techniques via reviewing the historical past of vital diamond discoveries within the western usa and Russia.
Diamond Deposits basically makes a speciality of the geology of universal diamond host rocks, together with kimberlite and lamproite. It additionally experiences the prevalence of a few unconventional host rocks that experience produced remarkable diamond discoveries.
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Extra info for Diamond deposits : origin, exploration, and history of discovery
Example text
Because of the success of the trek, the prospectors were paid additional funds amounting to a few hundred thousand dollars for their discovery. But the discovery was a fraud. The fraud was revealed by a group of geologists and surveyors from the Fortieth Parallel Survey. Members of the Fortieth Parallel Survey found the site on the basis of information they had obtained from the Roberts’ Party. ” After a thorough field investigation, it was concluded that the stones had been salted. At an emergency executive meeting of the Golconda Mining Company in 1872, Clarence King of the Fortieth Parallel Survey presented several facts to the Board of Directors of the Golconda Mining Company supporting fraud.
Just a little more than 100 years later, in 1975, diamonds were discovered in kimberlite only 288 km east of the Great Diamond Hoax site. Lamproites were studied by one of the members of the Fortieth Parallel Survey (Sam Emmons) several years later, just 80 km north of the hoax site. One of the lamproitic mesas in the Leucite Hills bears his name. However, it wasn’t until nearly a century later that these unusual rocks were classified as lamproites and were recognized as possible diamond targets.
F. 1885. Precious stones. Mineral resources of the United States. S. Geological Survey 723–782. M. 1982. The Diamond Deposits of India. Industrial Diamond Quarterly 33:3:21–29. © 2002 by the Society for Mining, Metallurgy, and Exploration, Inc. All rights reserved. Electronic edition published 2009. D. Mabarak. 1976. Diamond in State Line Kimberlite Diatremes, Albany County, Wyoming, and Larimer County, Colorado. Wyoming State Geological Survey Report of Investigations 12. P. D. Hausel. 1995. Mantle indicator minerals in ant mounds and conglomerates of the southern Green River Basin, Wyoming.