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40% Rare Earth Mineral Sand Concentrate - 1 Kilo Amount.
These concentrates have all the magnetite fraction removed.
The concentrates were run through a laboratory SX plant. The results confirmed a 40% TREO.
Concentrates are from my Colorado placer mining project. Concentrates were produced with Pan Am Duplex jigs and then gravity separation tables.We have used gravity separation to extract the freegold; these are the remains.Great for research, extraction projects, and as a collectible. Note they still contain some amounts of gold – these should run ¼ ounce a ton according to fire assay from Hazen Research. In addition, according to xrf analysis these concentrates do contain the suite of platinum group metals. If you can extract them – let me know!!Approximate Composition
45% - Combined ilmenite, euxenite, columbite and rutile
27% - Monazite
14% - Garnet
3.4% - Other heavies including zircon, silica
