Nero Tropical Black Granite
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Synonyms: Black Tropical
Location: Nero Tropical Black granite is quarried in Brazil.
Description: Nero Tropical Black granite is a black and red banded 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. Ideal for both interior and exterior use, Nero Tropical Black granite should be frost free and polish constant. The veining and colour varies considerably and a small sample is not representative of the whole slab.
Gneiss: A high grade metamorphic rock. This means that gneiss has been subjected to more heat and pressure than schist. Gneiss is coarser than schist and has distinct banding. This banding has alternating layers that are composed of different minerals. The minerals that compose gneiss are the same as granite. Feldspar is the most important mineral that makes up gneiss along with mica and quartz. Gneiss can be formed from a sedimentary rock such as sandstone or shale, or it can be formed from the metamorphism of the igneouse rock grantite. Gneiss can be used by man as paving and building stone.