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Spain
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Macrophotograph of rhyolite from the Auer formation of the Etschtaler Volcanic group Bolzano Italy Rhyolites are volcanic rocks that have large we
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Macrophotograph of rhyolite from the Auer formation of the Etschtaler Volcanic group Bolzano Italy Rhyolites are volcanic rocks that have large we
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Rhyolite
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Rhyolite light micrograph
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Rhyolite light micrograph
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Polarised light micrograph of rhyolite from the Auer formation of the Etschtaler Volcanic group Bolzano Italy Rhyolites are volcanic rocks that hav
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Rhyolite light micrograph
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Polarised light micrograph of rhyolite from the Auer formation of the Etschtaler Volcanic group Bolzano Italy Rhyolites are volcanic rocks that hav
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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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Rhyolite light micrograph
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Light micrograph of rhyolite from the Auer formation of the Etschtaler Volcanic group Bolzano Italy Rhyolites are volcanic rocks that have large w
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Rhyolite light micrograph
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Rhyolite 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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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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Cross polarised light micrograph of a thin section of a porphyritic basalt rock from Mount Dore France The section is dominated by the mineral plagi
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Orthogneiss 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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Paragneiss
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Paragneiss light micrograph
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Paragneiss
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Paragneiss light micrograph
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Polarised light micrograph of a thin section of basalt a fine-grained igneous rock composed of calcic plagioclase feldspars and pyroxene and often c
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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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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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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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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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Forbach granite light micrograph
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Basalt light micrograph
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Basalt light micrograph
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Basalt light micrograph
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Gabbro Polarised light micrograph of a section of gabbro an igneous rock mainly composed of plagioclase feldspar and olivine It forms deep below th
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Basalt light micrograph
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Basalt light micrograph
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Basalt 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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Minerals intergrowing within Allende meteorite
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Thin section of rock from the Allende meteorite
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Light micrograph of a section of the Allende meteorite showing plagioclase in the meteorite composition
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An iridescent slab of labradorite (sodium calcium aluminium silicate) one of the plagioclase series of minerals which includes albite oligoclase an
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The Allende meteorite showing plagioclase (blue) in the white areas
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Ancient Roman columns
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Ancient Roman columns
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Pink granite rocks on Brittany coast
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Sunstones Sunstone is a variety of plagioclase feldspar (sodium calcium aluminium silicate) which has tiny flecks of haematite (iron oxide) and other
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Labradorite plutonic rock Larvikite is composed of large coarse crystals of plagioclase feldspar mineral and has an iridescent sheen when polished
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Red granite
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Granite
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Granite
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An iridescent slab of labradorite (sodium calcium aluminium silicate) one of the plagioclase series of minerals which includes albite oligoclase an
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Norite igneous rock Norite is a plutonic rock or a rock that solidifies from molten magma deep below the Earths surface It crystallises slowly und
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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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Gabbro rock light micrograph
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Polarised LM of thin section of grain diorite rock
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Cut surface of amygdaloidal andesite rock
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Grain diorite Polarised light micrograph of a sample of grain diorite in thin section Diorite is an intrusive igneous rock found on the margins of
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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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Monzonite Polarised light micrograph of a thin section of monzonite an igneous rock Monzonite is medium-grained containing components of feld- spa
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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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Gabbro Polarised light micrograph of a thin section of gabbro an igneous rock Gabbro is coarse-grained containing the minerals olivine and plagioc
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Cross polarised light micrograph of a thin section of igneous rock showing a process known as crystal zoning The section is dominated by large crysta
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LM of a thin section of gabbro rock
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Diorite from Italy Polarised light micrograph (PLM) of a thin section through diorite rock Diorite is an intrusive igneous rock found on the margin
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Diorite from Italy Polarised light micrograph (PLM) of a thin section through diorite rock Diorite is an intrusive igneous rock found on the margin
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Gabbro from Huntly Scotland Polarised light micrograph of a thin section of gabbro an igneous rock Gabbro is coarse-grained containing the minera
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Kentallenite - Ballaculish Scotland LM
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Trachyte Polarised light micrograph of a thin section of trachyte an igneous rock This sample is classed as Quartz-trachyte One of the essentia
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Quartz Diorite LM of thin section
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Basaltic dyke polarised light micrograph
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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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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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Gabbro microcrystals Polarised light micrograph of a section through a sample of gabbro rock showing the phaneritic (coarse-grained) microcrystals
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Gabbro microcrystals Polarised light micrograph of a section through a sample of gabbro rock showing the phaneritic (coarse-grained) microcrystals
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Gabbro microcrystals Polarised light micrograph of a section through a sample of gabbro rock showing the phaneritic (coarse-grained) microcrystals
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Gabbro microcrystals Polarised light micrograph of a section through a sample of gabbro rock showing the phaneritic (coarse-grained) microcrystals
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Polarised light micrograph of a thin section of gabbro an igneous rock This is a type of coarse-grained gabbro showing mainly feldspar with randoml
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Polarised light micrograph of a thin section of gabbro an igneous rock This is a type of coarse-grained gabbro showing mainly feldspar with randoml
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Oval Sunstone gemstone
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Basalt close-up This black volcanic rock has formed from the solidification of a lava flow It contains microscopic crystals of the minerals plagioc
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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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