Celestine
Deforest Quarry, Caledon Township, Peel Region, Ontario, Canada
H:7.5cm x W:5cm x D:4cm overall specimen - see child photos
One wouldn't normally consider celestine as a rare mineral, but orange-coloured specimens are. Studies have shown that the color is due to the presence of copper in the order of 50 ppm (ref. American Mineralogist, V64, p160-168, 1979) Terminated crystals of orange celestine from ...
© Maggie Wilson