Greenockite, Woodlawn Mine, New South Wales

Mineral Matters #738

The next issue of the Monthly Mineral Chronicles looks at the element cadmium and the minerals containing cadmium.

One of the most common is greenockite. And some greenockites fluoresce a bright red, like this one from New South Wales. Why some fluoresce and some don’t, I don’t know. The yellow response below is cerussite.

Below: Greenockite, Galena, Tennantite-Tetrahedrite, Pyrite, Cerussite, Woodlawn, New South Wales under longwave UV. Width of view 5mm.