macle (le as el)

(Fr., from Latin macula = a spot.] 1. Her .: The same as MASCLE (q. v.). 2. Min .: A variety of andalusite (q. v.), occurring in long tapering crystals in clay-slate. They have the axes and angles of a different color from the rest of the crystals, owing to a regular arrangement of impurities in the interior. In transverse section they exhibit a cro or a te elation, the outlines of which are frequently rhombs. (See figures in Dana's System of Mineralogy , 1875.) The same as CHIAS TOLITE.