gabrielite

from The Century Dictionary.

• noun Eccles., one of a sect of Anabaptists founded in Pomerania in 1530 by one Gabriel Scherling. They refused to bear arms and to take oaths, and preached perfect social and religious equality.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun mineralogy A triclinic-pinacoidal black mineral containing antimony, arsenic, copper, silver, sulfur, and thallium.