Definition
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight
History
Origin
Germany
Southern Alps, France
Discoverer
Van Tooren
Dolomieu
Etymology
From Greek tephra, ashes from Indo-European base, to burn
From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
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Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock