Definition
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Discoverer
Etymology
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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
From the mountain ranges- Mount Kenya and is named by J. W. Gregory in 1900
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock
Diorite is a grey to dark-grey intermediate intrusive igneous rock composed principally of plagioclase feldspar,biotite, hornblende, and pyroxene
From early 19th century coined in French, formed irregularly from Greek diorizein distinguish
Coarse Grained Rock, Medium Grained Rock, Opaque Rock