Nero Angola Granite
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Synonyms: Black Angola, Lapis Black, Labrador Black, Negro Angola, Negro de Angola, Nero Angola, Preto Angola
Location: Nero Angola granite is quarried near Sa da Bandeira, Lubango, Angola.
Description: Nero Angola granite is a dark blue anorthosite. 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 anorthosite.
A small sample of Nero Angola Black granite is usually representative not having a wide variation in colour and veining however 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, Nero Angola granite is frost free and polish constant.
Anorthosite: A phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90-100%), and a minimal mafic component (0-10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present.