1 resultado para beauty

em Digital Commons - Montana Tech


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Agate in any of its varieties presents numerous problems in regard to its origin. Many types have been described and their beauty elaborated upon, but little has been written concerning their formation and the problems involved. The genesis of agate implicates an amazing complexity of physical and colloid­al chemistry, as well as, various principles of geology.