Definition
A ganister is a hard, fine-grained quartzose sandstone or orthoquartzite which is basically used in the manufacture of silica brick typically used to line furnaces and is a type of sedimentary rocks.
History
Origin
England
Discoverer
Unknown
Etymology
From gan′is-ter i.e a hard, close-grained siliceous stone, often forming the stratum which underlies a coal-seam
Class
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Family
Group
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Opaque Rock