Geothermal Mineralization I: The Mechanism Of Formation Of The Beowawe, Nevada Siliceous Sinter Deposit

The Siliceous Sinter Deposit At Beowawe, Nevada Has A Volume Of 7. 71X107 M3 And Contains 1. 28X1011 Kg Silica. This Silica Precipitated From Geothermal Solutions That Welled-Up Along The Malpais Fault, A Graben Bounding Fault. Sinter Formation Involved Three Steps: (1) Geothermal Solutions That Were Saturated With Quartz In The Reservoir Moved To The Surface Where They Cooled And Became Supersaturated With Amorphous Silica. (2) Amorphous Silica Particles Nucleated (Heterogeneously On Ferric Hydroxides) To Produce A Colloidal Suspension. (3) The Amorphous Silica Particles Agglomerated And Were Cemented Together By Amorphous Silica Precipitating In The Embayments Between The Particles. At Least 5. 58Xl014 Kg Of Geothermal Solution Must Have Been Produced Over Time To Account For The Mass Of Silica In The Beowawe Deposit. This Fluid Would Have Carried At Least 4.95Xl017 Kj Of Heat To The Surface. Egi Reference Number Gl04025

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Field Value
Citation Date 1982-01-01T00:00:00

Harvest Information

Original ID 84C23CF3B7D04629AE34DE9572CAD0CB
Index Date 2014-06-17T12:08:16
Original Format ISO-USGIN
Original Version 1.2

Author

Name J. D. Rimstidt And David R. Cole
Email sbivens@egi.utah.edu

Geographic Extent

North Bound 42
South Bound 35
East Bound -114.06
West Bound -120.01