Definition
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks
Gritstone or grit is a hard, coarse-grained, siliceous sandstone
History
Origin
USA
Pennines, England
Discoverer
Unknown
J.J. Ferber
Etymology
From silica, the main mineral content of Jasperoid
From Grit + Stone
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock