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Hydrothermal minerology of research drill hole Y-3, Yellowstone National Park, Wyoming

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Abstract

The approximate paragenetic sequence of hydrothermal minerals in the Y-3 U. S. Geological Survey research diamond-drill hole in Lower Geyser Basin, Yellowstone National Park, Wyoming, is: hydrothermal chalcedony, hematite, pyrite, quartz, clay minerals (smectite and mixed-layer illite-smectite), calcite, chlorite, fluorite, pyrite, quartz, zeolite minerals (analcime, dachiardite, laumontite, stilbite, and yugawaralite), and clay minerals (smectite and mixed-layer illite-smectite). A few hydrothermal minerals that were identified in drill core Y-3 (lepidolite, aegirine, pectolite, and truscottite) are rarely found in modern geothermal areas. The alteration minerals occur primarily as vug and fracture fillings that were deposited from cooling thermal water. Refs.

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Publication type Conference Paper
Publication Subtype Conference Paper
Title Hydrothermal minerology of research drill hole Y-3, Yellowstone National Park, Wyoming
Volume 8
Year Published 1984
Language English
Publisher Geothermal Resources Council
Publisher location Davis, CA, USA
Description 7 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Transactions - Geothermal Resources Council
First page 111
Last page 117
Conference Title Geothermal Energy: Bet on It! Geothermal Resources Council 1984 Annual Meeting
Conference Location Reno, NV, USA
Country United States
State Wyoming
Other Geospatial Yellowstone National Park
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