7uu ((SCHEELITE)), Ophir District, Tooele County, Utah, 10 x 6 x 4.5 cm, Cabinet, | |
Lustrous yellow orange octahedral crystals of fluorescent Scheelite. There is also several black crystals on the specimen. These are probably Bournonites. These Bournonites are irregular because they are etched from the HCl used to dissolve the Calcite which once covered the Scheelites. ex University of Utah Geology Department specimen. |