Marshite With Cuprite
Miniature, 4.4 x 3.4 x 2.3 cm
Proprietary Mine, Broken Hill, New South Wales, Australia (TYPE LOCALITY)
Marshite almost never turns up for sale, with most specimens either lost to the ages or already in museums. This is a very rich specimen, obviously validated, which I exchanged from the South Australian Museum last year. This piece features hundreds of sub-mm but eye-visible marshite crystals, on gangue matrix with small cuprite crystals. A very rich reference specimen for this important and very RARE copper species (it is a startlingly simple copper iodide, CuI). When found, the mineral shows a pink coloration that faded naturally to colorless or beige over time (and now, is stable). (TYPE LOCALITY)