Three Kids district

Region West, Southwest
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area MRDS past producers and Cannon and others (2017).
Identified resources Identified resources and historical production of manganese.
Production Three Kids mine (1917-1961): 2,225,000 tons of ore mined and treated, with 15-40% Mn. Total production from the district exceeded 1,000,000 tons of manganese ore (Longwell and others, 1965).
Status Past mining.
Estimated resources Three Kid mine: Resource of 7,230,000 metric tons ore, grading 13.2% Mn for 954.000 metric tons of contained Mn (Cannon and others, 2017).
Geologic maps Stewart and Carlson (1978), scale 1:500,000; Longwell and others (1965), scale 1:250,000.
Geophysical data Inadequate Rank 3 aeromagnetic and Rank 5 aeroradiometric coverage.
Favorable rocks and structures Manganese deposits are in sandstone and siltstone beds of the Pliocene(?) Muddy Creek Formation, which overlies a thick series of Tertiary(?) volcanic rocks (Longwell and others, 1965).
Deposits Three Kids deposit (MRDS dep_id: 10037203), Red Chief claim (MRDS dep_id: 10037204), Fannie Ryan (MRDS dep_id: 10197443).
Evidence from mineral occurrences MRDS.
Geochemical evidence Wad (hydrous Mn oxide) is the principal ore mineral; psilomelane, pyrolusite, manganite, and neotocite are also reported (Longwell and others, 1965).
Geophysical evidence Unknown.
Evidence from other sources None.
Cover thickness and description Exposed at the surface, mined from open pits.
Authors David A. Ponce.
New data needs Geologic mapping, geophysics.
Geologic mapping and modeling needs Updated geologic mapping.
Geophysical survey and modeling needs High-resolution, Rank 1 aeromagnetic and aeroradiometric surveys.
Digital elevation data needs Lidar inadequate.