Tropical Guarany Granite
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Synonyms: Tropical Gourani, Tropical Guarani
Location: Tropical Guarany granite is quarried at quarry RN 000217, Vieiras Bravo, Fazenda Corrego Campestre, Candeias, Minas Gerais, Brazil.
Description: Tropical Guarany granite is a medium-grained, green-grey-red gneiss. This stone internationally may be nominated as a granite but in the area of application of the European Standard this stone must be nominated as a gneiss.
The veining and colour varies considerably and a small sample of Tropical Guarany granite may not be representative of the whole slab therefore swatch samples must be approved for large projects to ensure that the blocks are all extracted from the same quarry face for matching purposes. Ideal for both interior and exterior use, Tropical Guarany granite is frost free and polish constant.
Mineral Composition: Quartz: 35%, Plagioclase: 30%, Microperthitic Microcline: 25%, Biotite: 4%, Accessories: 6%
Gneiss: A common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. Gneissic rocks are usually medium to coarse-foliated and largely recrystallized but do not carry large quantities of micas, chlorite or other platy minerals. Gneisses that are metamorphosed igneous rocks or their equivalent are termed granite gneisses, diorite gneisses, etc.