| | Journal (article/letter/editorial) | Alteration and Fluid Geochemistry of the Tongonan Geothermal Field, Philippines Graeme L. SCOTT Abstract: The...during the history of the Tongonan Geothermal Field. Thermal activity in the Tongonan area began in the Miocene...gas was released to a geothermal fluid and condensed in groundwater with geothermal steam. The condensate...hydrothermal eruptions. The output of gas to the geothermal fluid decreased, while the salinity (10,000 mg/kg...mg/kg or ~ 2 wt% NaCl) and the temperature of the geothermal fluid remained nearly constant throughout the | | Bird, Dennis K., Schiffman, Peter, Elders, Wilfred A., Williams, Alan E., McDowell, S. Douglas (1984) Calc-silicate mineralization in active geothermal systems. Economic Geology, 79 (4) 671-695 doi:10.2113/gsecongeo.79.4.671 | Journal (article/letter/editorial) | worldwide.The mostcommonmetasomatic calc-silicates in geothermal systems areheulandite, laumontite,wairakite,prehnite...Anhydrousphasesof garnet, clinopyroxene, and wollastonite typicallyare foundat temperatures greaterthan...Anhydrousphases,includinggarnet,pyroxene,and wollastonite,are typically restricted in their distribution...Suchobservations are critical erals in worldwide active geothermal systemsare in evaluatingcalc-silicatephaserelationsin...andcompositional In the pasttwentyyearsexplorationof geothermal variationsof specificcalc-silicatemineralsin | | | Report (volume) | the last years from several working groups in the field of experimental studies and spectroscopic work....the epdiote minerals, from low temperature in geothermal fields (Chapter 6, Bird and Spieler), to common...(Bonazzi et al. 1996), named after its locality Andros Island/Greece; dissakisite(Ce) (Grew et al. 1991), named...unpublished results), and in hydrothermal epidote from geothermal fields (Bird and Spieler 2004), and might in...define a field of optical positive sign on the Al-rich side of the ternary system, and this field extends |
|