arsenate

arsenate group includes mimetite which was named in 1835 by François Sulpice Beudant from the Greek μϊμητής for “imitator,” in allusion to its resemblance to pyromorphite.

A secondary mineral found in the oxidized zones of lead deposits. Usually found as small hexagonal prisms, often plain but may be modified, sprinkled on the matrix thinly to thickly. Its colour is quite variable, ranging from pale yellow to yellowish-brown to orange-yellow to orange-red, brownish, greenish, white and colorless.