The Most Common Yet Elusive Mineral
The Earth’s most common mineral, called bridgmanite, has never been observed naturally on Earth. In fact, it took a meteorite
Read moreThe Earth’s most common mineral, called bridgmanite, has never been observed naturally on Earth. In fact, it took a meteorite
Read moreToday’s featured rock/mineral piece is on: Obsidian. Geo-Definition Obsidian is a volcanic glass created when magma is extruded from a
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