Mine detail: Pea Ridge

Previously called 'Sullivan'

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Location

Lat / long:

38.12506, -91.04179

Resource(B)

Primary:	Iron
Secondary:	Phosphorus-Phosphates
Ore:	Apatite, Hematite, Magnetite
Gangue:	Barite, Calcite, Fluorite, Pyrite, Quartz
Orebody form:	CRET-SHAPED TABULAR MASS, LENTICULAR MASSES
Discovery year:	1954

Production

Operation type:	Unknown
Production size:	Large
Development status:	Producer
First production started:	1964

Geology

Host type:	Rhyolite
Associated type:	Diorite,Rhyolite
Structure:	A Major Fault Striking N 80 Deg W And Dipping 45 Deg Ne, 2 Sets Of Magic Dikes, One Striking N 60 Deg E And The Other N 85 Deg E, Aplitic Dikes N 25 Deg W
Tectonic:	Ozark Uplift
Alteration processes:	Sericite, When Found, Occupies The Position Normally Occupied By Quartz. It Appears That Late-Stage Hydrothermal Activity With Excess Available Oxygen Could Explain The Genesis Of The Massive Hematite.

References

MRDS	D008175
DEP	10090126
Reference	{Deposit:: HAYES, W.C. AND GUILD P.W., 1967, IRON, MINERAL AND WATER RESOURCES OF MISSOURI, VOL XLIII, SECOND SERIES, P. 74-87}{Deposit:: MINERALS IN THE ECONOMY OF MISSOURI, 1979, BUREAU OF MINES, U.S. DEPARTMENT OF THE INTERIOR, P. 5-6}{Deposit:: WHARTON, H.M. AND OTHERS, DEC 1969, MISSOURI MINERALS, MISSOURI GEOLOGICAL SURVEY AND WATER RESOURCES, ROLLA, MISSOURI P. 51-57 AND P. 223-226.}{Deposit:: MERAMAC IRON ORE PROJECT STARTS PRODUCTION AT PEA RIDGE, ENGINEERING AND MINING JOURNAL, APRIL 1964 P. 93-108}{Deposit:: EMERY, J.A., GEOLOGY OF THE PEA RIDGE IRON ORE BODY, ORE DEPOSITS OF THE U.S., 1933-1967, VOL 1, P. 359-369.}{Production:: STATISTICAL REPORT, MISSOURI DEPARTMENT, DIVISION OF STANDARD INSPECTION LABOR MINES}
Reporter	Dulin, Lise, A. (Orris, Greta J.)