| mtl CHRYSOCOLLA on QUARTZ, Black Pine Mine, Flint Creek Valley, John Long Mountains, Philipsburg, Granite County, Montana, 2.5 x 1.5 x 1.5 cm, Thumbnail | |
 | This was from an old accumulation in Montana of Black Pine Mine specimens. Here is a cluster of terminated Quartz with some Pyrolusite druze and a green mineral identified as Chrysocolla by a copper species expert. |
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