Browse Items (4 total)
- Subject is exactly "Product Class: Ceramics: Non-Technical Ceramics"
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Plaster of Paris
Plaster of Paris is exactly that - a plaster that, originally, came from Paris, France. It is made by calcining the mineral gypsum, CaSO4.2H2O, at about 180°C, driving off water to give the anhydrite 2CaSO4.H2O. When mixed with water it rehydrates…
Slate
Slates are formed by the deposition of clay and mud, consolidated by pressure. Their most striking features are their ability to be cleaved, producing flat slabs or sheets, and their impermeability to water in a direction normal to the cleavage…
Granite
Granite is one of the most durable of materials. The pyramid of Giza (2980 BC) was built of limestone cased in granite. It is a coarse-grained igneous rock, very hard and compact. It takes a fine polish, showing the beauty of its crystals. It is the…
Marble
Marble is the purest form of limestone. It is almost pure calcium carbonate that has been compacted and heated such that it has recrystallized. It is used for ornamental building, statuary, ornamental furniture and for electric power panels. The…