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
Gritstone or grit is a hard, coarse-grained, siliceous sandstone
History
Origin
Mount Kenya
Pennines, England
Discoverer
J. W. Gregory
J.J. Ferber
Etymology
From the mountain ranges- Mount Kenya and is named by J. W. Gregory in 1900
From Grit + Stone
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock