Variation in sericite composition from fracture zones within the Coso Hot Sprints geothermal system

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Journal Article: Variation in sericite composition from fracture zones within the Coso Hot Sprints geothermal system

Abstract
Two types of white micas are found in drillhole samples within the geothermal system at Coso Hot Springs. Low-permeability zones of the crystalline basement contain coarse-grained relict muscovite, whereas rock alteration near fracture zones at temperatures > 150°C is characterized by abundant finegrained sericite in association with secondary calcite and quartz and unaltered relict microcline. In this hydrothermal sericite there is an increase in interlayer K, octahedral Mg + Fetotal and tetrahedral Al with increasing temperature between ~215° to >250°C.

Authors 
Bishop, B.P.; Bird and D.K.  






Published Journal 
Geochim. Cosmochim. Acta; (United States), 5/1/1987



DOI 
Not Provided
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Citation

Bishop, B.P.; Bird, D.K.  . 5/1/1987. Variation in sericite composition from fracture zones within the Coso Hot Sprints geothermal system. Geochim. Cosmochim. Acta; (United States). (!) .


Related Geothermal Exploration Activities
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Areas (1)
  1. Coso Geothermal Area
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