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2. List of quarries in the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_quarries_in_the...

   This is the world's largest "deep hole" granite quarry. It produces Devonian Barre granite. Graniteville is home of its owner, the 1885-founded Rock of Ages Corporation, since 2016 part of Polycor, Inc., the largest producer of marble and granite in North America. Quarrying continues, and the quarry may be visited by the public.

3. List of types of marble - Wikipedia

   en.wikipedia.org/wiki/List_of_types_of_marble

   Marble mis-nomers: Cetechovice marble (cetechovický mramor) from Cetechovice, Kroměříž District: coloured [c] Karlík marble (karlický mramor), from Barrandien, Karlík, Prague-West District: black with gold-yellow-colour veins [d] Podol marble (Podolský mramor), from Vápenný Podol, Chrudim District: white, grey-white, rosy [e]

4. Granite - Wikipedia

   en.wikipedia.org/wiki/Granite

   Granite (/ ˈ ɡ r æ n ɪ t / GRAN-it) is a coarse-grained intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous ...

5. Marble - Wikipedia

   en.wikipedia.org/wiki/Marble

   Marble is a metamorphic rock consisting of carbonate minerals (most commonly calcite (CaCO 3) or dolomite (CaMg(CO 3) 2) that have recrystallized under the influence ...

6. Engineered stone - Wikipedia

   en.wikipedia.org/wiki/Engineered_stone

   Engineered marble is typically used as flooring materials for large commercial projects such as hotels, shopping centers, business lobbies, where it combines the attractive appearance of marble with budget-friendly cost and reliable delivery time. Quartz is a much harder material.

7. Decomposed granite - Wikipedia

   en.wikipedia.org/wiki/Decomposed_granite

   Decomposed granite is a kind of granite rock that is weathered to the point that the parent material readily fractures into smaller pieces of weaker rock. Further weathering yields material that easily crumbles into mixtures of gravel -sized particles known as grus that further may break down to produce a mixture of clay and silica sand or silt ...