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, and sulfur; antimony may be replaced by arsen. Due to on the cleavage of {110}, bournonite has regular.....more
. Complete cleavage on the underside is distinctive. Even though molybdenite is very similar to graphite.....more
, sometimes nickel and iron. It is octahedron and forms twin crystals on cleavage {111}.主要由銅、鈷和硫所構成，也常含有少量.....more
features include lead gray color and streak, perfect cubic cleavage and high density.Galena.....more
may be present. Covellite exhibits perfect cleavage in one direction, giving it a sheety, foliated.....more
include lead gray color and streak, perfect cubic cleavage and high density.Galena is a relatively.....more
