Improvement of the quartz sand processing at
2006-4-1 · Percolation leaching of quartz sand with sulphuric acid solutionThe mineralogical investigation found the following minerals in the quartz sand from Hohenbocka: pyrite, rutile, zircon, graphite, hematite, ilmenite, leucoxene, limonite and markasite. Pyrite in the form of fine inclusions in sand grains was found to be the main source of iron.