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Part II. Geology and Gold Deposits of the Getchell Region

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Published:
January 01, 2000

Abstract

HU0.0: I80 EXIT 194 GOLCONDA. At the top of the off ramp, turn north (left). Proceed 0.1 mi to the stop sign at the junction with SR789. County mileposts begin here. Turn east (right) on SR789. Steam from active hot springs can sometimes be seen on the north and northeast sides of the town of Golconda. The springs range from 109° to 165°F, are anomalously radioactive, and are actively depositing travertine (Garside and Schilling, 1979). Metals in the spring waters include As (0.02 ppm), Cu (0.05 ppm), Li (0.36 ppm), Mn (0.10 ppm), and Hg (0.0001 ppm).

The gravel road to the south at the Interstate off ramp leads to the Adelaide mining district. The district was discovered in 1866 and has intermittently produced small amounts of gold, silver, lead, zinc, copper, tungsten, and manganese. Total gold production has been approximately 40,000 oz. About 25,000 oz of gold were recovered during 1897–1910 from the Adelaide mine (copper-gold skarn), and about 10,000 oz were produced during the 1930–1940s and 1990–1991 at the Adelaide Crown mine (quartz-adularia veins). The ore occurred in three banded cryptocrystalline to chal-cedonic quartz veins, the Crown, the Recovery, and the Margharita. These veins averaged 30 ft in width. The remainder of the gold was recovered from placers mostly in the very early days. The original Adelaide mine was once owned by President Herbert Hoover. Franco-Nevada Mining Corporation is the major property owner in the district (Pete Maciulaites, pers. commun., 2000).

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Contents

Society of Economic Geologists Guidebook Series

Part I. Contrasting Styles of Intrusion-Associated Hydrothermal Systems: Part II. Geology & Gold Deposits of the Getchell Region

John H. Dilles
John H. Dilles
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Mark D. Barton
Mark D. Barton
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David A. Johnson
David A. Johnson
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John M. Proffett
John M. Proffett
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Marco T. Einaudi
Marco T. Einaudi
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Elizabeth Jones Crafford
Elizabeth Jones Crafford
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Society of Economic Geologists
Volume
32
ISBN electronic:
9781934969854
Publication date:
January 01, 2000

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