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Types of building stone used in various types of construction:
- Uncut (raw) stone
- Random cut stone
- Fragmented and sifted stone (aggregate)
- Dimensioned blocks
- Processed stone, cut and shaped in the form of slabs or tiles.
All these stones are obtained from "stone quarries" opened in the
earth's crust. The treatment of the stone changes in accordance
with the work in which it is to be employed. The quarries from which
dimension stones are obtained are known, though incorrectly from
the scientific point of view, as "Marble Quarries".
In recent years, in order to prevent this terminological confusion in the
international market, material in the Natural Dimension Stones sector
have been classified in four categories:
- True (Scientific) Marbles
- Coloured Natural Stones
- Travertines and onyxes
- Hard Stones (Magmatic and Volcanic)
According to this classification, it is sufficient to employ the name of the
region together with the type and colour: e.g. Marmara Marble, Afyon
White Marble (Cream), Bilecik Beige, Adapazari Black, Denizli
Travertine, Kirflehir Onyx, Kozak Granite, Izmit-Kadifekale Andesite,
Nevsehir Volcanic Tufa.
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