...that is good quality, maintaining all those trace minerals that make it so useful.

I see caps they say 50% fluvic acid, some cheap ones, but I know that its important that its as pure as possible.

Any brand name you recommend?

I have only bought from a local Indian grocery, Himalaya brand. Life Extension also has CoQ10 combined with shilajit. LE claims

The latest studies show that when shilajit is combined with CoQ10, cellular energy gains substantially increase. In a breakthrough preliminary study, combining CoQ10 with shilajit produced a 56% increase in cellular energy production in the brain (40% better than CoQ10 alone) … and 144% increase in muscle (27% better than CoQ10 alone).42

I misspoke! I checked my bottle and its Dabur brand. It says "standardized for fulvic acid" 6 grams