As noted by these authors, at the type-locality: “…both minerals are intimately intergrown with each other and Mn-Co-Ni-bearing blödite…The three minerals cannot be distinguished from one another by visual methods only electron microprobe analysis can differentiate between them.”
At the Blue Lizard Mine in Utah, by contrast, two additional species have been described in which the M2 site is filled by Mn (manganoblödite) or Co (cobaltoblödite), with the crystal aggregates having varying degrees of pinkish to reddish coloration (Kasatkin et al. In blödite as originally described, this site is occupied by Mg, and the crystals are generally colorless. 4H2O, in which the M2 site can be occupied by a range of bivalent metal cations.Reference: Members of the blödite group are hydrated sulfates with the basic formula Na2M2+(SO4)2 The extent and results of drilling to the North are unknown. Workings include underground openings with a length of 1500ft and an overall depth of 80ft. Secondary minerals have formed on the walls of the underground workings. Local rocks include Triassic (1) sedimentary rocks in Salt southeastern Utah. Local alteration is bleaching in mudstone. Controls for ore emplacement included channel fill, carbonized plant remains, and lithology. The depth-to-bottom is 70ft and the depth-to-top is 12ft.
The orebody is tabular at a thickness of 6ft, a width of 80ft and a length of 120ft. Mineralization is a replacement deposit hosted in Late Triassic siltstone and sandstone of the Shinarump Member, Chinle Formation. MRDS database accuracy for this location is not stated (coordinates are from the plášilite article). Operated by Goode Mining and Exploration. Redd, Colorado (1974) and by the Shumway Brothers, Colorado (1974). The deposit was first recognized as replacements of petrified wood in the summer of 1898 by John Wetherill.
19, T37S, R15E, SLM, 6.8 km (4.2 miles) SSE of Chocolate Drop (summit), on Bureau of Land Management administered land (located claim). A former U-Cu occurrence/mine located in sec.
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