Definition
Kenyte is a variety of porphyritic phonolite or trachyte rock with rhomb shaped phenocrysts of anorthoclase with variable olivine and augite in a glassy matrix
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
History
Origin
Mount Kenya
Germany
Discoverer
J. W. Gregory
Van Tooren
Etymology
From the mountain ranges- Mount Kenya and is named by J. W. Gregory in 1900
From Greek tephra, ashes from Indo-European base, to burn
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock