The Collaborative International Dictionary of English v.0.48:

Calcigenous \Cal*cig"e*nous\, a. [L. calx, calcis, lime +
   -genouse.] (Chem.)
   Tending to form, or to become, a calx or earthlike substance
   on being oxidized or burnt; as magnesium, calcium. etc.
   [1913 Webster]