Definition
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks
Oil Shale is a fine-grained sedimentary rock from which oil is extracted
History
Origin
USA
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Discoverer
Unknown
Unknown
Etymology
From silica, the main mineral content of Jasperoid
From Old English scealu in its base sense of thing that divides or separate
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Family
Group
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Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock