What is "hematites"

Usage examples of "hematites".

After four, Master Jojonah considered it might be time to put the hematites to use.

Now he understood why the abbey held such a huge cache of small hematites, the small stones of gray and red!

But the necklaces that were given to her now-no, they were not given to her--would she exchange them for the necklace of hematites, for the hematites of the dream?

If he dug methodically in his memory, he would probably remember which compounds yielded—in a billion-year chemistry—precisely these forms that, stained with hematites, impersonated bloody bones, or that went beyond the modest accomplishments of terrestrial asbestos to create an iridescent fluff as of the most delicate fleece.

No oyó ningún ruido, y poco después llegó hasta una puerta de marfil con hematites incrustados.

Monks of the Abellican Order had used hematites for rudimentary communication for centuries.