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  1. en.wikipedia.org › wiki › PlasterPlaster - Wikipedia

    Gypsum plaster (plaster of Paris) Gypsum plaster, also known as plaster of Paris, is a white powder consisting of calcium sulfate hemihydrate. The natural form of the compound is the mineral bassanite. Etymology. The name "plaster of Paris" was given because it was originally made by heating gypsum from a large deposit at Montmartre, a hill in ...

  2. Mar 14, 2024 · Known since ancient times, plaster of paris is so called because of its preparation from the abundant gypsum found near Paris. Plaster of paris does not generally shrink or crack when dry, making it an excellent medium for casting molds. It is commonly used to precast and hold parts of ornamental plasterwork placed on ceilings and cornices.

    • The Editors of Encyclopaedia Britannica
  3. Apr 17, 2017 · DOI: 10.2174/1874325001711010291. REVIEW ARTICLE. Plaster of ParisShort History of Casting and Injured Limb. Immobilzation. B. Szostakowski, P. Smitham and W.S. Khan. University College...

  4. Oct 16, 2013 · 1. History. The name Plaster of Paris (POP) had its origins from the fact that it was extensively mined from Montmartre in Paris district. But its use predates the industrial revolution, they have been found on the insides of pyramids.

    • Hemant Sharma, Dhanasekara Prabu
    • 2013
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  6. en.wikipedia.org › wiki › GypsumGypsum - Wikipedia

    Alabaster. Fine-grained, slightly colored. Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. [4] It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, drywall and blackboard or sidewalk chalk.

    • Massive, flat. Elongated and generally prismatic crystals
    • Prismatic (2/m), H-M symbol: (2/m)
    • 1.5–2 (defining mineral for 2)
    • Monoclinic
  7. Apr 17, 2017 · The first use of plaster of Paris as a cast for injured limbs took place through a technique known as plâtre coulé that became popular in Europe at the beginning of 19 th century. This technique involved pouring plaster of Paris around injured limbs encased in a wooden construct.

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