Dims: 0.4 x 0.3 x 0.2" (9 x 7 x 6 mm)
Wt: 9 g w/ specimen box
Mount Saint-Hilaire, Quebec, Canada
Though quite small, this section of a Carletonite crystal is one of the clearest that I have seen. It shows good but incomplete tetragonal form and has a dark blue 'core' surrounded by a colorless outer layer. Its luster is generally vitreous, and it is transparent and dimly to moderately clear due to intense internal cleavage and fracture flaws. It is affixed in a plastic thumbnail box with a removable putty.