1 Definition
1.1 Definition
Luxullianite is a rare type of granite, known for presence of clusters of radially arranged acicular tourmaline crystals which are enclosed by phenocrysts of orthoclase and quartz in a matrix of quartz, tourmaline, alkali feldspar, brown mica.
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
1.2 History
1.2.1 Origin
England
Western Australia, Minnesota
1.2.2 Discoverer
1.3 Etymology
From the village of Luxulyan in Cornwall, England, where this variety of granite is found
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
1.4 Class
Igneous Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock