1 Definition
1.1 Definition
Diorite is a grey to dark-grey intermediate intrusive igneous rock composed principally of plagioclase feldspar,biotite, hornblende, and pyroxene
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
1.3 History
1.3.1 Origin
1.3.2 Discoverer
1.4 Etymology
From early 19th century coined in French, formed irregularly from Greek diorizein distinguish
From Greek tephra, ashes from Indo-European base, to burn
1.5 Class
Igneous Rocks
Igneous Rocks
1.5.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
1.6 Family
1.6.1 Group
1.2 Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock