Igneous
Granodiorite
Granodiorite
Medium to coarse-grained, typically grey or greenish-grey with dark flecks of mafic minerals like hornblende or biotite.
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Physical properties
Medium to coarse-grained, typically grey or greenish-grey with dark flecks of mafic minerals like hornblende or biotite.
Formation & geological history
Formed from the slow cooling of silica-rich magma deep underground. Often found in continental crust and volcanic arcs.
Uses & applications
Used in construction, monuments, and sometimes in road building.
Geological facts
The Rosetta Stone is made of granodiorite.
Field identification & locations
Identify by its speckled appearance with a mix of light-colored feldspar/quartz and dark mafic minerals. Found in many mountainous regions worldwide.
