Researchers from the University of Göttingen have investigated an intriguing geological phenomenon in Uruguay. These scientists are trying to uncover the mysteries behind the formation of amethyst ...

Wherever I wander, I have an eye out for new and different things that might make interesting writing and reading. A trip to the Iowa-Missouri-Illinois tri-state corner last weekend offered up some ...

Geode is a type of sedimentary and volcanic rock that is hollow, vaguely circular rock, in which masses of mineral matter (which may include crystals) are sequestered. The term 'Geodes' was derived ...

The Tentative Lists of States Parties are published by the World Heritage Centre at its website and/or in working documents in order to ensure transparency, access to information and to facilitate ...

Cavité de forme plus ou moins sphérique ouverte dans une roche et présentant des parois tapissées de cristaux souvent bien automorphes. La taille des géodes peut varier de quelques centimètres à ...

Iowa's state rock, the geode, illustrates the adage that 'you can't judge a book by its cover,” said Marv Houg, president of the Cedar Valley Rocks and Minerals Society. 'It's a great teaching tool ...