1 Definition
1.1 Definition
Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix
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
1.2 History
1.2.1 Origin
1.2.2 Discoverer
1.4 Etymology
From Alkalic Igneous complex near Loch Borralan in northwest Scotland
From German adamellit and from Monte Adamello, a mountain in Italy, its locality
2.2 Class
Igneous Rocks
Igneous Rocks
2.2.2 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
2.3 Family
2.3.1 Group
2.5 Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock