One of the more prominent lacunae in the Eibonvale gallery has now been filled, thanks to the addition of a nice specimen from Mount Tuzo, Canada. I have always had trouble with Canadian stones for some reason. For a long time it was only represented by a few miserable specimens and donated images. But now, I am finally managing to build things up a bit. Nice Mt Lyall and Black Dome specimens came along, and now the last of the Canadian ‘big three’, a Mount Tuzo.
This specimen has a nice simple core of banded grey agate with only a few flaws. There’s also a sprinkling of metallic reflective crystals around the boundary of the core. I am guessing those are pyrites. The matrix of this thunderegg was also one of the hardest I have ever had to work with – hard as in rock strength, not hard as in difficult. It took great shine in the end.
Click here to see the gallery of Canadian thundereggs: http://www.thundereggs.co.uk/canada.html