Huachocolpa Mine, Peru
The Cave of Crystals near Chihuahua, Mexico.
Those giant crystals of gypsum (CaSO4) probably grew to their massive size really slowly in a bath of hot water and dissolved minerals. Now that the water has been pumped out by industrial miners, scientists are free to explore…with the help of some ice-cooled orange jumpsuits: The caves average a termperature of 118 F, and 90 % humidity.
#410 Eights – A new minimal geometric composition each day