CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


Deposit number Country Location Names Commodities
121 United States (Missouri) 37.37.14 N -- 090.37.34 W Pilot Knob Fe
 
Database name: World Fe-oxide+/-Cu-Au-U (IOCG) deposits
Compilers: Sunil S. Gandhi
Release date: 2015-03-04
   
Deposit name(s): Pilot Knob
Political location(s): United States; Province or state: Missouri; Subprovince or locality: St. Francois Mountains
Deposit clan (type): Kiruna-type
Deposit (sub) types: volcanogenic stratabound; upper orebody
pipelike massive; lower orebody; Reference: Seeger, C. M., 2000: Iron Deposits of the St. Francois Mountains, Southeast Missouri.; unpublished report, Division of Geology and Land Survey, Missouri Department of Natural Resouces., 26 p.
Deposit status: past producer
Geologic province: St. Francois Mountains Granite-Rhyolite Terrane
Geologic subprovince: St. Francois Mountains
Commodities: Fe
Geological ages: Middle Proterozoic (host rocks)
Tectonic setting: continental craton-intracratonic; stable (host rocks)
Host rocks: (1) volcanic; felsic volcanic rocks; Magma series/sedimentary package/metamorphic group: calc-alkaline; Depositional setting: subaerial; Metamorphic grade: unmetamorphosed
External host rock forms:ash flow tuffs
flows
Mineralogy: (mineralization): hematite
Qualified comments: (Applies to: discovery and development) Production from the surface hematite orebody started in 1835, and continued intermittently till early 1920s; average grade 50 % Fe. Production from the subsurface magnetite orebody (just west of the surface hematite body) started in 1967 and ended in 1980; total of 20 Mt.
References:
Anderson, L. C., 1976
The Pilot Knob Hematite Deposit, Pilot Knob, Southeast Missouri
M. Sc. thesis (unpublished), Univeristy of Wisconsin, 80 p.

Kisvarsanyi, G.; Kisvarsanyi, E. B., 1989
Precambrian Geology and Ore Deposits of the Southeast Missouri Iron Metallogenic Province
in Olympic Dam-Type Deposits and Geology of Middle Proterozoic Rocks in the St. Francois Mountains Terrane, Missouri, Edited by Brown, V. M.; Kisvarsanyi, E. B.; Hagni, R. D., Guidebook Series, Society of Economic Geologists, Volume 4, p. 1 - 41

Panno, S. V.; Hood, W. C., 1983
Volcanic Stratigraphy of the Pilot Knob Iron Deposits, Iron County, Missouri
Economic Geology, Volume 78, p. 972 - 982

Pratt, W. A.; Sims, P. K., 1988
The Midcontinent of the United States - Permissive Terrane for an Olympic Dam-Type Deposit?
U. S. Geological Survey Bulletin, United States Geological Survey, U. S. Department of the Interior, Publication code 1932, 81 p.

Seeger, C. M.; Marikos, M. A.; Nuelle, L. M., 1989
The Pilot Knob Hematite Deposit
in Olympic Dam-Type Deposits and Geology of Middle Proterozoic Rocks in the St. Francois Mountains Terrane, Missouri, Edited by Brown, V. M.; Kisvarsanyi, E. B.; Hagni, R. D., Guidebook Series, Society of Economic Geologists, Volume 4, p. 55 - 68

Seeger, C. M., 2000
Iron Deposits of the St. Francois Mountains, Southeast Missouri.
unpublished report, Division of Geology and Land Survey, Missouri Department of Natural Resouces., 26 p.

Wracher, D. A. , 1976
Geology of the Pilot Knob Magnetite Deposit, Southeast Missouri
in Studies in Precambrian Geology of Missouri, Edited by Anonymous, Report on Investigations, Missouri Division of Geology and Land Surveys , p. 155 - 163


Generated 2015-03-04 14:17:13 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada