Formed from post-mining leaching and oxidation of V-U oxide replacements of organic matter.. Zn-dominant analogue of volborthite.
IMA Status:
Approved IMA 2007 (Dana # Added)
Locality:
Blue Cap mine, about 15 km east of La Sal, San Juan Co., Utah, USA Link to MinDat.org Location Data.
Name Origin:
Named for its discoverer, Joe Marty, of Salt Lake City, Utah, who is also responsible for the discovery of three other new minerals from the same area.