Deep within a remote private mine, a remarkable discovery recently captured the attention of all who encountered it. Miners, ...

Most geodes are round or oval-shaped. When the miners finally got the 176-pound rock open, they marveled at the purple heart-shaped amethyst center. The giant heart-shaped geode was discovered in ...

Utah State University scientists use these images to accurately identify mineral types and determine the rock’s geochemical and tectonic histories. Credit: Jordan Jensen, USU In a new paper, Jordan ...