Malachite

A gossan matrix of vuggy, rusty Limonite inter-layered with opaque milky Quartz veinstone is richly coated with dark-green Malachite from Ľubietová (Libethen) in Slovakia.  The Malachite forms a coating of drusy spheres and, where the internal structure is revealed, show silky and lustrous radiating emerald-green radial fibres.
Ex. the Mineral Collection of Archduke Stephan Franz Viktor of Hungary (1817 to 1867), with a historic Archduke (Erzherzog) Stephan label incorporating his coat of arms.  This large label measures 9.8 x 8.1 cm and is complete (untrimmed) and is numbered 144/3.  A small label bearing this same number is glued beneath the specimen and a Carl Rumpff label, dated 1889, is attached to one side.