Mineral Rings

Mineral Matters #127

No, that isn’t rings made of minerals. It is minerals that form a ring.

There are quite a few minerals that can tend to form in this way. Better known ones are boulangerite (and other similar sulphosalts) and malachite. But there are others.

This mineral habit is a favourite of Canadian mineral collector, Frank Ruehlicke. If you haven’t seen a presentation on this subject by Frank, you have been missing out!

One such presentation was to the Friends of Mineralogy Pacific Northwest Chapter, at the 2022 Fall Symposium. Bluecap Productions have now made this talk available on YouTube. Well worth a watch!

Below: Boulangerite rings on rhodochrosite, Rosebery, Tasmania. Width of view 1.75mm.