Definition
Origin
Discoverer
Etymology
Class
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Other Categories
Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts
From Latin term that means purple
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock
Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase
Coarse Grained Rock, Medium Grained Rock, Opaque Rock