Micah Whipple

Fakelite

Sometimes greenwashing goes a little too far.

A good sci-fi novel title?

There are manmade elements. So maybe that? Though, those are highly radioactive. So probably best you don’t have any manmade minerals

I dunno but I imagine if one exists it you could find it on the side of the 73/405 interchange.

Ulexite (NaCaB5O6(OH)6·5H2O). It's basically made of optical fibers, is found in giant underground cotton ball-looking structures, and it disolves in hot water. It's also one of the main source of boron on Earth. It ain't natural, I say.