Field and slabbed examples of epithermal quartz veins from the north-east trending, +1,400m long Horna Klapa portion of Rhyolite Ridge. (A) Poorly developed crustiform-colloform vein piece (45532); (B) Low temperature chalcedonic quartz with included fragments of rhyolite rock (45533); (C) Massive chalcedonic quartz with included fragments of spherulitic rhyolite (45534); (D) Typical low temperature textures reflecting a low fluid-flux environment of formation within the upper levels of the upflow zone (45538).
Field and slabbed examples of epithermal quartz veins from the north-east trending, +1,400m long Horna Klapa portion of Rhyolite Ridge. (A) Poorly developed crustiform-colloform vein piece (45532); (B) Low temperature chalcedonic quartz with included fragments of rhyolite rock (45533); (C) Massive chalcedonic quartz with included fragments of spherulitic rhyolite (45534); (D) Typical low temperature textures reflecting a low fluid-flux environment of formation within the upper levels of the upflow zone (45538).