Definition
Origin
Discoverer
Etymology
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Other Categories
Granophyre is a type of granitic rock which consists of intergrown feldspar and quartz crystals in a medium to fine grained groundmass
From German Granophyr, from Granit granite + Porphyr
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents
From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock