Definition
Adamellite is a coarse-grained porphyritic igneous rock, a variety of Monzogranite and dominated by phenocrysts of orthoclase in a granular groundmass of perthite, plagioclase and quartz
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Italy
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From German adamellit and from Monte Adamello, a mountain in Italy, its locality
From Greek di + base
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock