Brown Antique Granite From Angola | Color Sample & Information | Eurasian
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Brown Antique Granite : Angola

Please note that these are average samples only. Your monitor settings may affect appearance.

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Brown Antique Granite Image

Brown Antique Granite

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Synonyms: Angola Brown, Marrom Antik. Some sources suggest Marron Cohiba however that would appear to be a similar Brazilian granite. Not to be confused with the commercial name for Antique Brown from Finland believed to be no longer quarried.

Location: Brown Antique granite is quarried in Angola

Description: Brown Antique granite is a very coarse-grained, black-brown anorthosite quarried in Angola. This stone internationally may be nominated as a granite however in the area of application of the European Standard this stone must be nominated as an anorthosite. All anorthosites found on Earth consist of coarse crystals.

Mineral Composition:

Technical and Physical Characteristics:
Compression tensile strength: 2326 kg/cm2
Tensile strength after freeze-thaw cycles: 2181 kg/cm2
Unitary modulus of bending tensile strength: 143 kg/cm2
Heat expansion coefficient: 0.0050 mm/mC
Water imbibition coefficient: 0.001300
Impact strength: 82 cm
Frictional wear: 0.7 mm
Mass by unit of volume: 2540 kg/m3

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.

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