7btdbr ((ULEXITE on COLEMANITE)), FLUORESCENT, $10 MINIMUM BID, Boron Open Pit Mine, Boron, California, 5 x 3.5 x 3 cm, Miniature | |
Here is a light brown Colemanite that is fluorescent with needle like Ulexite crystals on the top of the specimen. ex Jim Minette collection. |