Skip to main content
Geothermal Energy

Science – Society – Technology

Fig. 6 | Geothermal Energy

Fig. 6

From: The impact of hydrothermal alteration on the physiochemical characteristics of reservoir rocks: the case of the Los Humeros geothermal field (Mexico)

Fig. 6

Scans and photographs of selected samples and corresponding thin sections (PPL = b, e, g, and XPL = i) and SEM images (c, f, k) representing a to c andesitic lava affected by propylitic alteration and silicification, d–g high-temperature propylitic alteration in a fracture of an andesitic lava, h, i skarn, and j–k marble. Ap, apatite; Cal, calcite; Chl, chlorite; Di, diopside; Ep, epidote; FeOX, iron oxides; Grt, garnet; Grs, grossular garnet; Kfs, K-feldspar; Mag, magnetite; p, pores; Pl, plagioclase; Py, pyrite; Qz, quartz; Ttn, titanite; TiOx, titanium oxide; Wol, wollastonite

Back to article page