13hbdjr ((WURTZITE, QUARTZ, PYRITE)), $10 MINIMUM BID, Butte, Silver Bow County, Montana, 5.5 x 3 x 2 cm, Miniature | |
Here is a specimen with terminated Quartz and lustrous Pyrite and black Wurtzite from Butte. Wurtzite is a zinc iron sulfide similar to Sphalerite. ex D. Johnson |