Definition: Serpulites are a type of mineral that is commonly found in the Earth's crust, particularly on the surface of volcanoes. These minerals consist of a rock-like substance called chalcocite, which is composed of iron oxide and silicon dioxide. The name "serpulite" comes from the Latin word "serpula," meaning "spider," as the mineral is often found in the shape of an octopus or spider's web. Serpulites are not typically
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