Definition: Phanite refers to a type of rock with an average density of around 3.2 grams per cubic centimeter, primarily found in certain regions on Earth. It's highly calcineous, meaning it contains minerals such as quartz, pyroxene, and feldspar. This rock is primarily composed of the basaltic magma from ancient continents, which is believed to have come from a region called the Transuranian Belt, a region extending from Mars to Jupiter.
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