Verde Bahia Granite
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Synonyms: Bahia Green, Verde Baia, Verde Gloria, Verde Smeraldo
Location: Verde Bahia granite is quarried at quarry RN 000076, Rodovia BR 330 km 17, EStrada Jequie, Jitauna, Jitauna, Bahia, Brazil.
Description: Verde Bahia granite is a medium green-black charnockite of the Precambrian period. This stone internationally may be nominated as a granite but in the area of application of the European Standard we are awaiting clarification. Ideal for both interior and exterior use, Verde Bahia granite is frost free and polish constant. There are several quarries of Verde Bahia granite therefore for large projects and matching ensure all the raw material comes from the same quarry.
Mineral Composition: Mesoperthite: 60%, Quartz: 33%, Plagioclaese: 5%, Magnetite: 2%
Technical and Physical Characteristics:
Compression tensile strength: 2607 kg/cm2
Tensile strength after freeze-thaw cycles: 1973 kg/cm2
Unitary modulus of bending tensile strength: 134 kg/cm2
Water imbibition coefficient: 0.002300
Mass by unit of volume: 2751 kg/m3
Charnockite: A hypersthene granite typical of Precambrian assemblages that contain migmatites. Charnockite is composed of orthoclase, oligoclase, quartz, and hypersthene; it also often includes the garnets almandine and pyrope, as well as biotite, magnetite, and other minerals. Two types of charnockites are distinguished: ferrohypersthene charnockite and garnet charnockite.