Alteration Mineral Mapping

aster_alteration_california

For epithermal gold and silver and porphyry copper exploration in areas of sparse vegetation, ASTER satellite photos are used to map clay, iron oxide and silica minerals. Iron oxide alteration can be mapped with a number of new high resolution multi spectral satellites. The high resolution WorldView-3 satellite launched in August, 2014 can map iron oxides and clay alteration minerals.