gypsum

Some trucks in the McFarland yard are loaded with the mineral gypsum, not wood chips, and Khosla doesn’t know for sure what the truck is carrying.

From Los Angeles Times ● Oct. 21, 2026

This is created by the water trickling through unusually thick bands of gypsum under the town, before resting in underground aquifers.

From BBC ● Oct. 8, 2026

Lynas however, says its by-product from rare earth refining produces a non-toxic, non-radioactive magnesium-rich gypsum and an iron phosphate with a very low level of naturally occurring radioactive material.

From Barron's ● Apr. 22, 2026

As the moisture moved upward through the sand, it left behind minerals such as gypsum, which is commonly found in desert environments on Earth.

From Science Daily ● Mar. 15, 2026

When he came home, he’d be covered with white gypsum powder, and sometimes we’d play ghost and he’d chase us.

From "The Glass Castle" by Jeannette Walls

To class it according to the type of European formations I would range it among the gypsums, often muriatiferous, that cover the Alpine limestone or zechstein.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 by Alexander von Humboldt