Origins of acid fluids in geothermal reservoirs
By: Alfred Truesdell
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Abstract
Acid fluids in geothermal reservoirs are rare. Their occurrence in geothermal systems associated with recent volcanism (Tatun, Sumikawa, Miravalles) probably indicates that the geothermal reservoir fluid was derived from volcanic fluid incompletely neutralized by reaction with feldspars and micas. Superheated steam containing HCl (Larderello, The Geysers) forms acid where it condenses or mixes with liquid at moderate temperatures (<300??C). The origin of steam with HCl is reaction of NaCl solid with rock minerals at high temperatures (>325??C). Cryptoacidity occurs at Los Humeros where HCl acidity is formed and neutralized without reaching the surface.
Suggested Citation
Truesdell, A., 1991, Origins of acid fluids in geothermal reservoirs, in Transactions - Geothermal Resources Council, v. 15, Sparks, NV, USA, 6 October 1991 through 9 October 1991, p. 289-296.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Origins of acid fluids in geothermal reservoirs |
| ISBN | 0934412693 |
| Volume | 15 |
| Year Published | 1991 |
| Language | English |
| Publisher | Publ by Geothermal Resources Council |
| Publisher location | Davis, CA, United States |
| Larger Work Title | Transactions - Geothermal Resources Council |
| First page | 289 |
| Last page | 296 |
| Conference Title | 1991 Annual Meeting of the Geothermal Resources Council |
| Conference Location | Sparks, NV, USA |
| Conference Date | 6 October 1991 through 9 October 1991 |