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  2. Diorite - Wikipedia

    en.wikipedia.org/wiki/Diorite

    Diorite is an intrusive igneous rock composed principally of the silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and sometimes pyroxene.The chemical composition of diorite is intermediate, between that of mafic gabbro and felsic granite.

  3. Diabase - Wikipedia

    en.wikipedia.org/wiki/Diabase

    Diabase can be cut for use as headstones and memorials; the base of the Marine Corps War Memorial is made of black diabase "granite" (a commercial term, not actual granite). Diabase can also be cut for use as ornamental stone for countertops, facing stone on buildings, and paving. [ 21 ]

  4. Tonalite - Wikipedia

    en.wikipedia.org/wiki/Tonalite

    However the current IUGS classification defines tonalite as having greater than 20% quartz, while quartz diorite varies its quartz content from 5 to 20%. [ 1 ] The name is derived from the type locality of tonalites, adjacent to the Tonale Line, a major structural lineament and mountain pass, Tonale Pass , in the Italian and Austrian Alps .

  5. How Much Do Granite Countertops Cost? - AOL

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  6. Your Guide to the Real Cost of Granite Countertops - AOL

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  7. Quartz monzonite - Wikipedia

    en.wikipedia.org/wiki/Quartz_monzonite

    Because of its coloring, it is often confused with granite, but whereas granite contains more than 20% quartz, quartz monzonite is only 5–20% quartz. Rock with less than five percent quartz is classified as monzonite. A rock with more alkali feldspar is a syenite whereas one with more plagioclase is a quartz diorite. [1]

  8. Alkali feldspar granite - Wikipedia

    en.wikipedia.org/wiki/Alkali_feldspar_granite

    Alkali feldspar granite, some varieties of which are called 'red granite', [1] is a felsic igneous rock and a type of granite rich in the mineral potassium feldspar (K-spar). It is a dense rock with a phaneritic texture. The abundance of K-spar gives the rock a predominant pink to reddish hue; peppered with minor amounts of black minerals. [2] [3]

  9. El Capitan Granite - Wikipedia

    en.wikipedia.org/wiki/El_Capitan_Granite

    A geologic map of Yosemite National Park. El Capitan Granite is a type of granite (also see granodiorite), in a large area near El Capitan, in Yosemite National Park, California, United States. The granite forms part of the Tuolumne Intrusive Suite (also known as Tuolumne Batholith), one of the four major intrusive suites within the Sierra Nevada.