Zunair Shafiq has been writing and gaming since he was a kid and now spends most of his time combining the two. He wants to play every game, good or bad, but has a soft corner for Simulation and ...

In a recent article in Miner Deposita, researchers presented a comprehensive study of the amethyst and agate geodes in the ...

Amethyst geodes—some stretching 5 m long—dot the ancient lava flows of Uruguay’s Los Catalanes mining area. The geodes contain calcite, colorless quartz, and agate, another quartz mineral. Large ...