The average serving of shilajit (half teaspoon) contains 5.4 mg of iron, 40 mg of calcium, 0.45 mg of zinc, and 2.8 mg of selenium and other vital minerals.
This black tar-like rock has been produced for millions of years from plants and organic matter trapped in the layers of the Himalayan Mountains above 8,000 feet in elevation. Shilajit contains a high concentration of trace minerals including fulvic and humic acids, iron, zinc, magnesium, copper, nickel, potassium, manganese, silicon, silver, sodium, sulfur, iodine, and more.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3296184/bin/IJAD2012-674142.001.jpg
