Thumbnail, 1.7 x 1.4 x 0.9 cm
Iron Monarch Mine, Iron Knob, South Australia, Australia
Ex. Dr. Mark Feinglos
Very rich areas of micro-crystallized green francisite in and on matrix. This extremely rare selenium mineral is known from only two localities, with a very small amount found at both. This is the type locality, and is an excellent specimen from the original find, with museum label. I have never seen the material before and cannot comment much but according to Mark who wrote the comments above, it is very rich, very good, and very hard to obtain!