hancockite

hancockite

[′han‚kä‚kīt]
(mineralogy)
A complex silicate mineral containing lead, calcium, strontium, and other minerals; it is isomorphous with epidote.
References in periodicals archive ?
993 Hancockite and Axinite, Franklin, New Jersey, no.
1971) Refinement of the crystal structures of epidote, allanite and hancockite.
Other newly-made dump finds include hancockite - the second world occurrence - sahlinite, katoptrite and ericssonite.