Nero Brasile Granite
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Synonyms: Brazilian Black
Location: Nero Brasile granite is quarried in Brazil.
Description: Nero Brasile granite is a medium-grained, dark grey to black diorite of the Precambrian period. This stone internationally may be nominated as a granite and in the area of application of the European Standard this stone must be nominated as a diorite. Ideal for both interior and exterior use, Nero Brasile granite is frost free and polish constant.
Mineral Composition: Plagioclase: 60%, Biotite: 15%, Hypersthene: 15%, Hornblende: 5%, Quartz: 5%
Diorite: A medium to coarse-grained intrusive igneous rock that commonly is composed of about two-thirds plagioclase feldspar and one-third dark-coloured minerals such as hornblende or biotite. The presence of sodium-rich feldspar, oligoclase or andesine, in contrast to calcium-rich plagioclase, labradorite or bytownite, is the main distinction between diorite and gabbro.