Kostenlose foto : Rock, Stein, Muster, Museum, Geologie, anzeigen, Kanada, Finnland, Erforscht, Kristall, Granit, Bc, 2010, Ubc, Subarktischen, Kristallin, Kristallographie, poliert, Petrologie, Igneous, Kuru, Orbicular, Dimensionstone, Orbiculite, Pengonpohjn, Wwwtooviucom, Bodenbelag, Steinschnitzerei 2950x2016
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Google search suggests this is orbicular granite from Pengonpohjn, Kuru, Finland. Cobble-sized orbs are inches across. Pacific Museum of the Earth, University of British Columbia, BC, Canada with its label lost during renovation. A great link to orbicular igneous rocks with nice photos: www.kristallin.de/orbiculite/orbicular_rocks1.htm My note for educators: - Orbicular granites are extraordinary magmas of ordinary minerals found in the Earth's crust. - Slow cooling = larger crystals. Faster cooling = smaller crystals. All in a tumble - moving, mixing, melting, crystallizing. - At least five sets of events in this one; 3 in the 'pebbles' and 2 in the matrix. That's with by eye, who knows what the microscope would say. What a rock!
Das kostenlose hochauflösende Foto von Rock, Stein, Muster, Museum, Geologie, anzeigen, Kanada, Finnland, Erforscht, Kristall, Granit, Bc, 2010, Ubc, Subarktischen, Kristallin, Kristallographie, poliert, Petrologie, Igneous, Kuru, Orbicular, Dimensionstone, Orbiculite, Pengonpohjn, Wwwtooviucom, Bodenbelag, Steinschnitzerei
, genommen mit einem FinePix J250 01/06 2017 Die Aufnahme mit 6.0mm, f/3.3s, 10/150s, ISO 800
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