igneous
Granite (Black/Dark Granite countertop background)
Intrusive felsic/intermediate igneous rock (e.g., granodiorite or tonalite)
AI-generated identification · may be incorrectHardness 6–7 Mohs, phaneritic texture showing mottled black, grey, and white interlocking crystals with a vitreous polished luster.
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Physical properties
Hardness 6–7 Mohs, phaneritic texture showing mottled black, grey, and white interlocking crystals with a vitreous polished luster.
Formation & geological history
Formed by the slow underground crystallization of silica-rich magma deep within continental crustal plutons over millions of years.
Uses & applications
Widely used in architectural building materials, interior kitchen countertops, floor tiles, and monumental masonry.
Geological facts
Commercial 'black granite' often geologically corresponds to gabbro, norite, or diorite rather than true true quartz-rich granite. The foreground object is a metallic cross marked 'ITALY'.
Field identification & locations
Identified by its visible, interlocking mineral grains of quartz, feldspar, and dark ferromagnesian minerals like biotite and hornblende.
