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Ultramylonite light micrograph
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Rhodochrosite Apatite Aquamarine Quartz Muscovite Albite Rhodochrosite Apatite Aquamarine Quartz Muscovite Albite Albite Rhomanganite Phosphorite Aobi
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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Polarised light micrograph of a thin section of quartz porphyry a type of igneous rock Essential mineral components include quartz alkaline feldspa
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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89mmx51mm biotite Kawamata-cho Fukushima
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Quartz phyllite light micrograph
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Quartz phyllite
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Quartz phyllite
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Granite Polarised light micrograph of a sample of granite in thin section Granite is an igneous intrusive rock usually found in large plutons or ba
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Quartz phyllite light micrograph
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Polarised light micrograph of quartz phyllite from the Plose moountain station near Brixen South Tyrol Italy This rock can be classified petrograp
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Quartz phyllite light micrograph
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Quartz phyllite
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Quartz phyllite light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Cross polarised light micrograph of a thin section of Cornish granite an igneous rock with a complicated mineral assemblage Quartz orthoclase pla
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Polarised light micrograph of orthogneiss from the Kesselalm area Proveis South Tyrol Italy Orthogneiss is a two-mica gneiss of the crystalline ba
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Orthogneiss light micrograph
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Migmatite
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Polarised light micrograph of migmatite from Kesselalm Proveis South Tyrol Italy Migmatite is a highly metamorphic rock found in the Eastern Alps
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Migmatite light micrograph
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Granodiorite
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Granodiorite light micrograph
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Granodiorite light micrograph
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Paragneiss light micrograph
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Folded strata in gneiss Polished slab of folded gneiss rock Gneiss is a metamorphic rock one formed at high temperatures and pressures deep within
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Paragneiss
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Paragneiss light micrograph
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Paragneiss
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Paragneiss light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Gneiss metamorphic rock Gneiss is formed when igneous rock (such as granite) or sedimentary rock (such as sandstone or shale) is subjected to high te
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Paragneiss light micrograph
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Paragneiss light micrograph
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Paragneiss light micrograph
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Light micrograph of paragneiss (biotite-quartz-plagioclase gneiss) from Hechtsberg Black Forest Germany Gneiss is a common and widely distributed t
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Paragneiss light micrograph
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Paragneiss light micrograph
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Forbach granite light micrograph
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Macrophotograph of polished Forbach granite from Raumunzach Murgtal Black Forest Germany This type of granite is part of the northern Black Forest
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Polarised light micrograph of Forbach granite from Raumunzach Murgtal Black Forest Germany This type of granite is part of the northern Black Fore
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Gneiss metamorphic rock Gneiss is formed when igneous rock (such as granite) or sedimentary rock (such as sandstone or shale) is subjected to high te
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Forbach granite light micrograph
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Amphibolite light micrograph
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Amphibolite light micrograph
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Amphibolite light micrograph
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Biotite in calcite groundmass Photo by DK IMAGESSCIENCE PHOTO LIBRARY
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Slate quarry waste
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Zircon crystals in a feldspar and biotite matrix Photo by DK IMAGESSCIENCE PHOTO LIBRARY
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Mica light micrograph
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Pink granite rocks on Brittany coast
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Macrophotograph of a specimen of pink granite Granite is an intrusive igneous rock formed largely from quartz potassium orthoclase feldspar plagio
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Red granite
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Granite
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Granite
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Granite
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Nepheline monzosyenite igneous rock Monzosyenite is an igneous rock formed when volcanic magma solidifies under pressure in the Earths crust It is
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Biotite mineral Polarised light micrograph of a flake of biotite (dark) embedded in orthopyroxene (yellowblue) Biotite and pyroxene are micaceous s
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Cut surface of amygdaloidal andesite rock
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Andesite Polarised light micrograph of a thin section of andesite This is an extrusive igneous rock Its structure shows large phenocrysts (included
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Macrophotograph of a specimen of pink granite Granite is an intrusive igneous rock formed largely from quartz potassium orthoclase feldspar plagio
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Polarised light micrograph of a thin section of granite an igneous rock with a complicated mineral assemblage Quartz orthoclase plagioclase felds
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Polarised light micrograph of a thin section of biotite (igneous rock) showing the characteristic brown to black colour of the crystal intrusion Bio
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Kentallenite - Ballaculish Scotland LM
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Waste quarry slate
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Sample of biotite
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Sample of andesite Andesite is an igneous rock consisting of plagioclase feldspar and hornblende biotite or augite It is extrusive formed when lav
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Biotite in rock groundmass
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Gneiss metamorphic rock Gneiss is formed when igneous rock (such as granite) or sedimentary rock (such as sandstone or shale) is subjected to high te
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Migmatite
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Mica fish are single crystals of mica most often biotite with an elongate lozenge- or lens-like form mostly as inclusions in micaceous-quartzitic
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Polarised light micrograph of a thin section of granite an igneous rock with a complicated mineral assemblage Quartz orthoclase plagioclase felds
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Cordierite-biotite-gneiss Geological specimen collected by Scotts British Antarctic Expedition 1910-1913 also known as the Terra Nova expedition I
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Hornblende-biotite granite Geological specimen collected during Scotts British Antarctic Expedition 1910-1913 (also known as the Terra Nova expediti
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Two-mica granite
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Rhyolite mountain Iceland
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Monzogranite Close-up of monzogranite with an intrusive sill (diagonal centre) Monzogranites are rocks composed of biotite granite that are conside
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Diorite
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Biotite mineral samples This phyllosilicate mineral contains potassium iron and magnesium as well as fluorides within an aluminosilicate lattice
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Vermiculite mineral sample This phyllosilicate mineral contains iron and magnesium and forms from the alteration of other minerals like biotite or p
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Polarised light micrograph of a thin section of granite an igneous rock with a complicated mineral assemblage Quartz orthoclase plagioclase felds
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Ultramylonite light micrograph
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