A. Does not readily leave mark on paper but can be scratched by
ordinary pocket knife
Chalcopyrite Greenish black Brass-yellow or 3½-4
golden-yellow
color that may
tarnish and show
rainbow-like
colors; commonly
massive; notice
streak
Gold Shiny golden Shiny yellow 2½-3
yellow color; extremely
heavy; flattens
when hit with
hammer; notice
streak
B. Cannot be scratched by ordinary pocket knife
Pyrite Black, greenish Shiny, pale 6-6½
black, or golden-yellow or
brownish black brass-yellow
color that may
tarnish; occurs
as grains, as
masses, or as
cubes or other
crystal shapes;
notice hardness
and streak