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andesite
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andesite

Volcanic igneous rock, intermediate in silica content between rhyolite and basalt. It is characterized by a large quantity of feldspar minerals, giving it a light colour. Andesite erupts from volcanoes at destructive plate margins (where one plate of the Earth's surface moves beneath another; see plate tectonics), including the Andes, from which it gets its name.



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Mineralization is hosted within a central andesitic volcanic complex.
Linux Gold Corp. Analysis of Rock and Soil Samples Confirms Gold and ... by Business Wire
A series of mineralized quartz latite dikes that has intruded the basal andesitic volcanic units is known to host silver mineralization over a wide zone that extends into the Montecristo III concession.
Paramount Gold Acquires the Montecristo III concession at their San ... by Business Wire
Indeed, bedrock float reported form the Karfakolo prospect includes altered metasediments displaying fresh, disseminated pyrite, coarse grained dolerite, dacitic to andesitic volcanics, hornfeled metasediments and sheared acidic intrusive.
SearchGold Options the Mandiana Gold Property in Guinea, West Africa by Business Wire
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