Jacksonville

Location: Florida, United States (30.303, -81.563 approx.)

Commodities: ilmenite; rutile; zircon; rare earth elements (in monazite); garnet; xenotime; heavy minerals

Deposit model: coastal heavy-mineral sands

Geology

The city of Jacksonville is situated in the center of the northeastern Florida h.m. placer district. Lying 6 km east of the city, now covered and surrounded by sprawling suburban houses, another large placer district can be found, stretching for about 17 km. (Elsner (1997))

Recorded production

• Jacksonville, Jacksonville Mine: produced 241,723,000 metric tons of heavy minerals at 5.5 percent, containing about 13,295,000 metric tons heavy minerals, 1943–1964 (Elsner (1997), Page 32)

Exploration and site history

• Active — Operated by Rutile Mining Co. of Florida; Products were ilmenite and rutile, 1943–1944 (Elsner (1997))
• Active — Operated by Humphreys Gold Corp.; Products were ilmenite, rutile, zircon, monazite, and garnet, 1944–1964 (Elsner (1997))
• Active — Operated by Carpco Engineering (tailings); Products were monazite and xenotime, 1966–1967 (Elsner (1997))

Record imported from USGS USMIN ver. 4.0 (June 2019). Developments after that date appear on facility records, not here; see the methodology.