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  2. Tonalite - Wikipedia

    en.wikipedia.org/wiki/Tonalite

    Tonalite is an igneous, plutonic rock, of felsic composition, with phaneritic (coarse-grained) texture. Feldspar is present as plagioclase (typically oligoclase or andesine ) with alkali feldspar making up less than 10% of the total feldspar content.

  3. Tonalite–trondhjemite–granodiorite - Wikipedia

    en.wikipedia.org/wiki/Tonalite–trondhjemite...

    In tonalite and trondhjemite, more than 90% of the feldspars are plagioclase, while in granodiorite, this number is between 65% and 90%. [1] Trondhjemite is a special kind of tonalite, with most of the plagioclase in the rock being oligoclase. [3]

  4. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    Trachyte – Extrusive igneous rock – A silica-undersaturated volcanic rock; essentially a feldspathoid-bearing rhyolite; Troctolite – Igneous rock – A plutonic ultramafic rock containing olivine, pyroxene and plagioclase; Trondhjemite – Light-colored intrusive igneous rock – A form of tonalite where plagioclase-group feldspar is ...

  5. Granodiorite - Wikipedia

    en.wikipedia.org/wiki/Granodiorite

    Granodiorite (/ ˌ ɡ r æ n oʊ ˈ d aɪ. ə r aɪ t, ˌ ɡ r æ n ə ˈ-/ GRAN-oh-DY-ə-ryte, GRAN-ə-) [1] [2] is a coarse-grained intrusive igneous rock similar to granite, but containing more plagioclase feldspar than orthoclase feldspar. The term banatite is sometimes used informally for various rocks ranging from granite to diorite ...

  6. Trondhjemite - Wikipedia

    en.wikipedia.org/wiki/Trondhjemite

    Trondhjemite is a leucocratic (light-colored) intrusive igneous rock.It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. [1] Trondhjemites that occur in the oceanic crust or in ophiolites are usually called plagiogranites.

  7. This watch was carved from a meteorite that hit Earth a ...

    www.aol.com/watch-carved-meteorite-hit-earth...

    The reason may be, at least partly, price. Toledano declined to disclose how much the fragment used for the B/1M cost, but he noted that raw meteorite can sell for more, per gram, than gold.

  8. Acasta Gneiss - Wikipedia

    en.wikipedia.org/wiki/Acasta_Gneiss

    It is a relatively homogeneous mafic tonalite that consists primarily of plagioclase, quartz, ... mafic crustal rock and crystallized well beneath the Earth's surface ...

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