To give a final update on our decision to process the black sands; the final assay report came back at 4 grams per ton, on the 2 ton super sack I sampled from. I also did an ICP, any body need Cesium? It runs almost 1%. Fe was in the 58% range, nothing else standing out for values. Most of the material has been classified to -20 mesh, and ran across a good table, good operator. Located in Colorado, at least 500 tons available. I also did a separation of the whole, into varying mesh cuts. Out of the general lot, I took a cut at 50 mesh, 100 mesh, and 150 mesh. Fire assay showed almost the same Au in all samples. This leads me to believe finer grinding would not expose or liberate, a higher quantity of recoverable Au. Cyanide is a real mother to permit. Have an acquaintance who put 25 million into a Cyanide plant, built to state regs. Just as they were about to start processing, the state comes in and says they want a secondary liner behind all Cyanide potential leak components. Basically a secondary under leach pads, tanks, pipes, Carbon columns, and any other thing associated with the process. Just wanted to inform anyone who may process in the future, build a pad under your pad, or the state will shut you down. Seeing this across western US.
Long story short, this has not been reprocessed. Might wait for the Cyanide plant to get up and running. See if they can do any thing with it. Any other markets for ground magnetite that you guys know of? I have heard petroleum refiners consume it, but I haven't looked into that yet.