BULK MATERIAL DENSITY TABLE - Tapco Inc
Bakelite, Fine 30-45 Baking Brick,Powder 40-55 Baking (SodiumSoda Brick,Bicarbonate) 40-55 Barite (Barium Sulfate) +1/2" 120-180 Barite, Powder 120-180 ... Iron Ore, Concentrates 120-180 Iron Ore, Crushed 135-150 Iron Oxide, Pigment 25 Iron Oxide, Mill Scale 75 Iron Pyrites (See Ferrous Sulfide)-
How to Grind Stone Into Powder | Sciencing
Grinding stone into powder is something you might need to do for all sorts of reasons. The process of assaying ore samples for mineral content usually requires that stone be ground down to a fine powder.