A review of gold and bearing base metals deposits in Chile, indicate the existence at least six different type ore deposits, most largely formed during Cenozoic with predominance Miocene. Mesozoic are common but less relevant regarding their size content. These hydrothermal genetically associated subduction related Andean arc magmatism. Due to its relationship episodic magmatism migrating eastw...

The intermediate-sulfidation epithermal Strauss deposit is part of the Drake Goldfield north-eastern NSW, Australia. mineralization gold dominant with minor silver and significant zinc, copper lead. has a combined total resource 2.66 Mt @ 1.5 g/T Au 1.9 Ag. Petrographic analysis shown to be hosted by varying layers dacitic ash flow tuffs cross-cutting lamprophyre dyke though previous authors cl...

The Gandy gold-base metal deposit is located in Tertiary Torud-Chahshirin volcano-plutonic range, north of Central Iran. Various styles of gold mineralization occur throughout the range. Mineralization at Gandy occurs in close spatial relation with rhyolitic domes in a caldera setting in a series of narrow brecciated veins. Two mineralogically and spatially different argillic alterations have a...

Semi-massive to massive sulfides with abundant late native sulfur were drilled in a shallowwater hydrothermal system in an island arc volcanic setting at the Palinuro volcanic complex in the Tyrrhenian Sea, Italy. Overall, 12.7 m of sulfide mineralisation were drilled in a sediment-filled depression at a water depth of 630 650 m using the lander-type Rockdrill I drill rig of the British Geologi...

Abstract. Enargite (Cu3AsS4) and tennantite (Cu12As4S13) are typical As-bearing sulfides in intermediate- high-sulfidation epithermal deposits. Trace major element variations enargite their substitution mechanisms widely described. However, Raman spectra of the minerals with correlative quantitative chemical information rarely documented, especially for enargite. Therefore, comparative electron...