earthstory: Tourmaline spearing quartzI fel…


Tourmaline spearing quartz

I fell in love with a similar piece at the Tucson mineral fair some years ago, though I sadly could not afford the price (in fact everything I really liked there was well beyond my modest means, I could easily have blown several million dollars over the month had I had it). As the water rich fluids in the granite pegmatite were cooling and precipitating their dissolved contents onto growing crystals, a lovely spear of bright blue tourmaline was enwrapped in a growing quartz crystal, testifying to the dance of energy and chemical affinity that affects the final form of all cooling magmas.


Image credit: Bijoux et mineraux