Commodities
PrimaryPhosphorus-Phosphates
Commodity typeN
Geology
Host rockShale,Siltstone,Phosphorite · Maquoketa Shale
Economic & production
Development statusPast Producer
Identification
Deposit ID10100310
MRDS IDW044574
RegionNA
Data scoreD
Coordinates42.43584, -90.67623
References
F1 < BROWN, C. E., 1974, PHOSPHATIC ZONE IN THE LOWER PART OF THE MAQUOKETA SHALE IN NORTHEAST IOWA: U.S. GEOLOGICAL SURVEY JOURNAL OF RESEARCH, V. 2, NO. 2, P. 219-232