2893 Chalconatronite, Carr Boyd Rocks Ni mine (Carr Boyd Ni mine), Menangina Station, Menzies Shire, Western Australia
Measuring 2×1.9x1cm and with its red arrow pointing to the chalconatronite, this specimen would seem like a micromount. The red arrow, however, is unnecessary, as the rare carbonate chalconatronite covers a sizeable portion of the...