Get the wildlife on your property coming back for more with the Do-All Outdoors Jurassic ROCK Crushed Mineral Supplement. This year-round mineral supplement will give your wildlife the nutrients they need, while coming back for more with the 17 prehistoric minerals that are packed into it. The 6lb bag contains aluminum, boron and calcium, along with many more essential elements. Year Round Mineral Supplement Contains Aluminum, Boron, Calcium, Chromium, Cobalt, Copper, Iodine, Iron, Lithium, Magnesium, Manganese, Phosphorous, Potassium, Selenium, Sodium, Sulfur, Zinc 6 lb Bag