This salt, which is perceptibly purer than sea salt ... and sometimes a red color, and render it unfit for immediate use. If the raw rock salt be fnsed on the hearth of a furnace, for example ...

A red circle shows the mushroom-shaped rock ... The rover photographed some goofy-looking rocks that resemble sea creatures and a formation that looks like an avocado or sombrero.

This research team was trying to understand the implications of mining metals from the deep-sea floor such as lithium, cobalt ...