Yooperlites are a variety of sodalite-rich syenite found in the Upper Peninsula of Michigan.

A belt of swirly, stripey rock in the northeast reaches of Canada looks like it contains some of the oldest minerals ever ...

That’s how it got its name—soda + lithos, or “sodium stone," according to Rock Your World gem & art gallery. In normal light, a Yooperlite looks like granite.

It forms when igneous rocks like granite undergo intense heat and pressure, changing their structure and appearance over time. But buried within this ancient gneiss is something even more valuable ...

NASA's Perseverance rover has discovered a haunting rock formation on Mars that looks unsettlingly like a skull. Dubbed "Skull Hill," the jet-black outcrop is so bizarre and out of place that even ...

However, looks can be deceiving. The meteorites found in Gale crater were found to contain large amounts of iron and nickel, but analysis of nearby rocks on Witch Hazel Hill suggest that they are ...

Another possibility is that the rock is igneous and formed from volcanic activity. Mars has a long history of volcanism, and igneous rocks can range in tone depending on their mineral content.

The igneous rock intruded into the Cheyenne Belt, a major geologic structure along the southern edge of an ancient continental fragment known as the Wyoming Province. “This suture zone is well ...

This tells us that for most rocks in the volcanic suite, critical metals were “locked up” within clinopyroxene, rather than remaining in the residual melt.

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