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  1. › wiki › PlasterPlaster - Wikipedia

    Gypsum plaster (plaster of Paris) Gypsum plaster, [12] also known as plaster of Paris , [13] is a white powder consisting of calcium sulphate hemihydrate . The natural form of the compound is the mineral bassanite .

  2. › wiki › Plaster_castPlaster cast - Wikipedia

    A plaster cast is a copy made in plaster of another 3-dimensional form. The original from which the cast is taken may be a sculpture, building, a face, a pregnant belly, a fossil or other remains such as fresh or fossilised footprints – particularly in palaeontology (a track of dinosaur footprints made in this way can be seen outside the Oxford University Museum of Natural History).

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