Geological Expedition Four
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Template:Ratings Geological Expedition Four was a UNSC Engineering Corps unit assigned to survey planet XF-063, later named Onyx. Its findings were that the planet was rich in granite and quartz, and that it had a rich fossil history, with limestone deposits. It recommended further surveys, and further assessments in the fields of paleobiology, xenobiology, and biochemistry. Its requests were presumably ignored after Read Admiral M. O. Parangosky classified the planets existence.