mtl DRUSY QUARTZ on PYROLUSITE on QUARTZ, Black Pine Mine, Flint Creek Valley, John Long Mountains, Philipsburg, Granite County, Montana, 2.5 x 2.5 x 2 cm, Thumbnail | |
This was from an old accumulation in Montana of Black Pine Mine specimens. Here is a terminated Quartz crystal with a Pyrolusite coating with a druse Quartz over the Pyrolusite. This causes the sparkling druse to be brown. |