Quartz (Var: Amethyst)
Briqueterie St-Laurent, Laprairie, Roussillon RCM, Montérégie, Québec, Canada
This specimen was collected in 1986.
It shows a 1.5 mm amethyst, perched on and surrounded by matte, beige dogtooth calcite crystals.
At right, in the back, and out of focus, the typical orange-colored matrix of dolomite crystals . The black material at the tip of the calcite xl at right is tarnished pyrite.
The millimetric-sized quartz ...
© J.Y. Lamoureux