Porphyry, igneous rock, feldspar phenocrysts in mafic matrix, Australia, show two different stages of cooling
Porphyry is an igneous rock characterized by large mineral crystals called phenocrysts suspended in a finely crystallized groundmass. This Australian porphyry consists of pink feldspar crystals in a dark colored dolerite that originates from a greenstone belt within the Yilgarn Block, Western Australia. This material has been dated at approximately billion years old
Size: 5760px × 3840px
Photo credit: © John Cancalosi / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: andesite, atom, atoms, background, black, close, color, colorful, core, crust, crystal, crystals, deposit, deposited, earth, economic, economy, element, elements, extrusive, fluids, formation, gem, gems, geological, geologist, geology, geomorphology, hard, hardness, hydrothermal, igneous, industrial, industry, intrusive, lava, lithosphere, magma, mantle, massive, metal, metals, metamorphic, mineral, mineralogical, minerals, mining, molecule, molecules, natural, nature, ore, ores, pink, rock, rocks, sample, science, scientific, sedimentary, specimen, specimens, stone, stones, valuable, volcanic, volcano, world
