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HYDROTHERMAL MINERALOGY 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.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
HYDROTHERMAL MINERALOGY OF RESEARCH DRILL HOLE Y-3, YELLOWSTONE NATIONAL PARK, WYOMING.
ISBN:
0934412588
Volume
8
Year Published:
1984
Language:
English
Publisher:
Geothermal Resources Council
Publisher location:
Davis, CA, USA
Larger Work Title:
Transactions - Geothermal Resources Council
First page:
111
Last page:
117
Number of Pages:
7
Conference Title:
Geothermal Energy: Bet on It! Geothermal Resources Council 1984 Annual Meeting.
Conference Location:
Reno, NV, USA