The Role of Magma and Mineral-Rich Waters The key to the formation of the giant crystals lies in the unique conditions within ...

THE paper by Messrs. Carpenter and Tamura in the November number of the Proceedings of the Royal Society, on "The Formation of Twin Metallic Crystals," presents a picture of the twin boundary ...

The chamber contains giant selenite crystals (gypsum ... hoping to maintain the environment that created these colossal formations. But before the cave was resealed, researchers took as much ...

ALUMINIUM plates with large crystals, obtained by recrystallization of fine-grain material, show many crystals with a particular type of grain boundary: they appear as 'pointed' inclusions at the ...