Occurs as plates embedded in anglesite and tufts of acicular crystals.
Habit:
Sprays of radial, acicular crystals & flat plates
Colour:
Bright blue
Quality of samples:
not specified / average specimens
Confirmation
Validity:
Believed Valid
References
References:
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 287; Peacor, D., et al (1985), Mammothite, a new mineral from Tiger, AZ, and Laurium, Greece, Min.Rec.: 15: 117-120.