Definition
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Etymology
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Jasperoid is a rare, peculiar type of metasomatic alteration of rocks
From silica, the main mineral content of Jasperoid
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Larvikite is an igneous rock and a variety of monzonite, notable for the presence of thumbnail-sized crystals of feldspar
From the town of Larvik in Norway, where this type of igneous rock is found
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock