Definition
Origin
Discoverer
Etymology
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Other Categories
Granodiorite is a coarse-grained intrusive igneous rock containing quartz and plagioclase, and which has composition in between granite and diorite
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase
From Finnish Rapakivi which stands for crumbly rock
Coarse Grained Rock, Opaque Rock