Definition
Origin
Discoverer
Etymology
Class
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Other Categories
Mugearite is a type of oligoclase bearing basalt, also comprising of olivine, apatite, and opaque oxides
Durable Rock, Medium Hardness Rock
Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock
From the locality in Essex County, Massachusetts,US
Fine Grained Rock, Opaque Rock