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Olivine adcumulateThis rock is ancient; it comes from a lava flow formed billions of years ago in wh

Link #geology #mineral #olivine #microscope #adcumulate #thin section #petrographic #komatiite #the earth story #australia

KomatiiteThis rock is the metamorphosed remnant of a lava flow that erupted about 3.5 billion years

Link #komatiite #geology #igneous #science #mantle #temperature #olivine #mineral #spinifex #south africa #iceland #the earth story

Mponeng MineThis photograph comes from the world’s deepest active mine, Mponeng Gold mine in South A

Link #nature #industry #south africa #mponeng #mponeng gold mine #earth #geothermal gradient #temperature #komatiite #volcano #science #geology #the earth story