Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
From pseudo- + tachylite, a glassy rock generated by frictional heat within faults.
Fine Grained Rock, Opaque Rock
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight
From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock