Giallo Veneziano Classico Granite
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Location: Giallo Veneziano Classico granite is quarried at quarry RN 000232, Zona di Pipinuque, Corrego de Agua Preta, Nova Venecia, Espirito Santo, Brazil.
Description: Giallo Veneziano Classico granite is a medium to coarse-grained, ochre-yellow to golden-brown, also light pink gneiss (pegmatitic orthogneiss) of the Precambrian period with biotite and garnet, 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, Giallo Veneziano Classico granite is frost free and polish constant.
Mineral Composition: Microperthitic Microcline: 45%, Quartz: 30%, Oligoclase: 16%, Biotite: 5%, Accessories: 4%.
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.