Skip to page content
The sample is in fact slightly more green than the photograph. Any idea what it is?
A few minerals exhibit curved faces like this, eg. dolomite, barytes.
Both of those occur in green varieties.
The opacity is suggestive of feldspar, but the green variety is too rare.
But barytes can be opaque, too; this example is similar to yours
- http://www.indiamart.com/famousminechem/minerals.html (scroll/search for 'Barytes')
Going on just the photo I'd suggest green barytes is the most likely.
Does it feel somewhat heavy for its size?
An exact location of origin might help...
Another ref re barytes: