The State Of Equilibrium And Ore Mineralization In Core Hole Vc-2A, Sulfur Springs, Valles Caldera, New Mexico

The Continental Scientific Drilling Program Core Hole Located At Sulfur Springs Penetrates The Most Intensely Altered And Thermally Active Portion Of The Valles Caldera Complex. It Was Anticipated That Creede-Type Mineralization Might Be Discovered In Vc-2A. Instead Of Creed-Type Mineralization, Alteration In Vc-2A Includes A Sub-Ore Grade Epithermal Molybdenum Deposit - A Unique Occurrence In An Active Geothermal System. Molybdenite Mineralization Associated With Quartz, Illite, And Pyrite Is Mostly Concentrated Between 24.9 And 163M Depth. Molybdenite And Associated Minerals Occur As Delicately Banded Veinlets And Vug Linings. Other Phases Found Less Commonly In The Molybdenite Zone Are Fluorite, Gypsum, Sphalerite, And Rhodochrosite. Veins Show A Complex Sequence Of Mineralization Evolving With Time: Molybdenite-Pyrite-Illite-Quartz; Quartz; Quartz-Illite; Quartz; Fluorite; Rhodochrosite-Sphalerite. Fluid Inclusion Temperatures Show All Assemblages Crystallized At About 200 Degrees C. Egi Reference Number Gl04551

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Citation Date 1989-07-01T00:00:00

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Original ID 1A8C890876AF4966859EA1B222D9F72B
Index Date 2014-06-17T13:27:31
Original Format ISO-USGIN
Original Version 1.2


Name R. W. Charles, F. Goff, And D. Janecky, C. J. Janik, And J. B. Hulen

Geographic Extent

North Bound 37
South Bound 31.33
East Bound -103
West Bound -109.05