Solid Marble Sphere

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Solid Marble Sphere
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Marble is formed when limestone is exposed to high temperatures and pressures. These high temperature and pressures results in changes in the microstructure where recrystalization occurs and a denser rock is formed. Marble can come in a variety of colours which is due to the impurities present when transformation occured. Recrystalization of pure limestone would result in an all white marble. The black colour in this marble sphere is believed to be due a presence of a high bitumen content. 

Marble is a valuable stone in many industries for its aesthetics, chemical and optical properties. When polished, marble It is used as tiles, cabinet surfaces as well as carved into decorative items. Its use is documented as far back as 200 BC. Popular structures made of marble include the Parthenon in Greece, the Taj Mahal in India and the door of the Hagis Sophia in Istanbul. When first mined, marble is relatively soft which makes it easy to sculpt and shape. The material gradually hardens as it ages and with some treatment (ie polishing) making it a relatively versatile material to work with. However, marble is particularly susceptible to acidic agents as it is made predominantly of calcium carbonate which is easily dissolved by acid.

Sample ID: 890

Particularities

Chemical symbol
CaCO3
State
Solid
Compound
Selections
Categories
Mineral
Curiosities
Relationships
Decorations | Machineable | Manufacturing | Soft

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