
• (n.) A variety of galena found in Derbyshire, England. • (n.) The smooth, striated, or partially polished surfaces of a fissure or seam, supposed to have been produced by the sliding of one surface on another.
Found on
http://thinkexist.com/dictionary/meaning/slickensides/
Slick'en·sides` noun 1. The smooth, striated, or partially polished surfaces of a fissure or seam, supposed to have been produced by the sliding of one surface on another.
2. A variety of galena found in Derbyshire, England.
Found on
http://www.encyclo.co.uk/webster/S/121

In geology, slickensides are the wall-faces or polished surfaces found along the joints and fault planes of rocks. They are usually marked with fine striations of the sides of the fissure over one another.
Found on
http://www.probertencyclopaedia.com/browse/HS.HTM
No exact match found.