Monday, January 13, 2014

ROCK TRIVIA: TOURMALINATED QUARTZ


Tourmalinated Quartz is a macrocrystalline variety of Quartz that contains black or dark green Tourmaline needles. Tourmalinated Quartz is formed because at high temperatures and pressure, the Quartz and Tourmaline minerals are in a liquid state and able to mix. When the temperatures cool and the pressure drops, the two minerals separate once more, with the Tourmaline needles being trapped inside the Quartz. Though Tourmalinated Quartz can be found in most of the major gem producing nations, today the vast majority is mined in Brazil.

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