rattlesnake ore

rattlesnake ore

[′rad·əl‚snāk ‚ȯr]
(geology)
A gray, black, and yellow mottled ore of carnotite and vanoxite; its spotted appearance resembles that of a rattlesnake.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.