Yadkin-Richland Mining District

Region East, Southeast
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Yadkin-Richland mine (Richland Cove) is a past-producer of Ti; a granular occurrence of ilmenite in matrix of fibrous serpentine and talc in closely spaced veins and lenses. Vein is 200 feet deep and 35 feet wide and occurs in the layered Wilson Creek Gneiss of Bryant and Reed (1970), however, no other units were mapped within this unit.
Identified resources Historical production of titanium (ilmenite).
Production Yadkin-Richland mine (1942-1952): produced more than 200,000 short tons of ilmenite (51% TiO2).
Status Past mining. No current mining.
Estimated resources Unknown.
Geologic maps Bryant and Reed (1970), scale 1:52,000.
Geophysical data Inadequate aeromagnetic and aeroradiometric data: Rank 4 aeromagnetic and Rank 5 aeroradiometric surveys.
Favorable rocks and structures Ilmenite occurs along veins and in lenses.
Deposits Yadkin Valley (Richland Cove) (MRDS dep_id: 10069116).
Evidence from mineral occurrences MRDS; Stuckey (1965).
Geochemical evidence Favorable mineralogy.
Geophysical evidence Unknown.
Evidence from other sources Established mining district for titanium; polygon includes anorthosite and Border Gneiss units shown on 1993 State Map of Virginia.
Comments Lenses of ilmenite in sericitic talc between a footwall of gneiss and a hanging wall of schist. Crude ore contained an average of 41.4% TiO2.
Cover thickness and description Exposed bedrock to thin cover.
Authors Arthur J. Merschat.
New data needs Geophysical data, geologic mapping, and geochemical analyses.
Geologic mapping and modeling needs Units within layered Wilson Creek Gneiss are not separated; description of Stuckey (1965) suggests deposit is associated with mafic and ultramafic rocks.
Geophysical survey and modeling needs High resolution aeromagnetic and aeroradiometric coverage. Aeromagnetic data expected to image mafic rocks and associated structures, radiometric data can help with geologic mapping in vegetated terrane; alteration may be imaged. Gravity data may also help.
Digital elevation data needs QL2.