contact vein

contact vein

[′kän‚takt ‚vān]
(geology)
A variety of fissure vein formed by deposition of minerals in a fault fissure at a rock contact.
A replacement vein formed by mineralized solutions percolating along the more permeable surface areas of the contact.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.