David K. Joyce

Large amphiboles, too!

One of the more common minerals at the Bear Lake Diggings is magnesiokatophorite. Actually, it is fluor-magnesiokatophorite. Quite a mouthfull but the crystals here represent well the manner in which rock forming minerals form very large crystals in calcite vein-dykes. Unfortunately, although they looked GREAT when they were dirty, most of the magnesiokatophorite crystals were fairly badly etched and corroded. They were BIG, though. We left 95% of the specimens we collected behind for others to pick up. A month later, all of the specimens we left behind were gone!