"Fourmarierite was doubtfully identified as a minor constituent of gummite from a number of localities, including ... Palermo and Ruggles pegmatites..."
Quality of samples:
not specified / average specimens
Confirmation
Validity:
Unconfirmed/Questioned
References
References:
Frondel, C., 1956, Mineral Composition of Gummite, Am Min v 41: 539-568.