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  2. Mohs scale - Wikipedia

    en.wikipedia.org/wiki/Mohs_scale

    Mohs scale. The Mohs scale (/ moʊz / MOHZ) of mineral hardness is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability of harder material to scratch softer material. The scale was introduced in 1812 by the German geologist and mineralogist Friedrich Mohs, in his book Versuch einer ...

  3. 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.

  4. Doctors Say This Common Injury Could Be a Dementia ... - AOL

    www.aol.com/lifestyle/doctors-common-injury...

    Doctors say that it’s unlikely. “Dementia is not going to ‘begin’ acutely after a fall,” says William Hu, MD, associate professor and chief of cognitive neurology and the Alzheimer’s ...

  5. Granite - Wikipedia

    en.wikipedia.org/wiki/Granite

    Granite is a hard stone and requires skill to carve by hand. Until the early 18th century, in the Western world, granite could be carved only by hand tools with generally poor results. A key breakthrough was the invention of steam-powered cutting and dressing tools by Alexander MacDonald of Aberdeen , inspired by seeing ancient Egyptian granite ...

  6. 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 of heat and pressure. [1] It has a crystalline texture, and is typically not foliated (layered), although there are exceptions. In geology, the term marble refers to metamorphosed ...

  7. Stone sculpture - Wikipedia

    en.wikipedia.org/wiki/Stone_sculpture

    Marble has been the preferred stone for sculptors in the European tradition ever since the time of classical Greece. It is available in a wide variety of colors, from white through pink and red to grey and black. [3] The hardest stone frequently carved is granite, at about 8 on the Mohs scale. It is the most durable of sculptural stones and ...

  8. Tile - Wikipedia

    en.wikipedia.org/wiki/Tile

    Tiles are usually thin, square or rectangular coverings manufactured from hard-wearing material such as ceramic, stone, metal, baked clay, or even glass. They are generally fixed in place in an array to cover roofs, floors, walls, edges, or other objects such as tabletops. Alternatively, tile can sometimes refer to similar units made from ...

  9. Masonry - Wikipedia

    en.wikipedia.org/wiki/Masonry

    Masonry is the craft of building a structure with brick, stone, or similar material, including mortar plastering which are often laid in, bound, and pasted together by mortar. The term masonry can also refer to the building units (stone, brick, etc.) themselves. The common materials of masonry construction are bricks and building stone, rocks ...

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