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Granite (from the Latin granum grain, in reference to the texture of the rock) is a common type of igneous rock or magmatic, intrusive or plutonic rock of fine non-metamorphic.


Marble is a metamorphic rock originated from limestone exposed to high temperatures and extreme pressure.


Limestone (from the Latin calx (cal. Calicis) or calcariu, “lime”) is a sedimentary rock that contains minerals with amounts above 30% of calcium carbonate (aragonite or calcite).


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Established in Chaves since 1979, the MGT is a reference on the market of ornamental stones, investing in various phases from extraction in their own quarries until the whole process, always investing in hightech equipment.
In Group MGT every stone tells a story of long years, the same story that marks the evolution of the company.

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If you want to contact us about any issue please call (+351) 276 342 133 or send us an e-mail to geral@mgtransmontanos.com.
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Zona Industrial do Seara, Chaves
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(+351) 276 342 133