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Dolomite
Dolomite
☒

Pseudotachylite
Pseudotachylite
☒



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Dolomite
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Pseudotachylite
Definition

Definition

Origin

Discoverer

Etymology

Class

Sub-Class

Group

Other Categories

 
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight
Southern Alps, France
Dolomieu
From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock
Sedimentary Rocks
Durable Rock, Medium Hardness Rock
-
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
 
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
USA
Unknown
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.
Metamorphic Rocks
Durable Rock, Hard Rock
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Fine Grained Rock, Opaque Rock