95% calcium carbonate, 5% trace minerals. Coarse chip product (crushed, not ground) that provides a very slow release of calcium and a gentle liming effect. Provided to chickens as a Ca supplement. Pretty white pebbled texture makes this useful also as a landscaping material, between stone pavers or in walkways. Can also be used as an attractive surface material in pots for houseplants.
LAN, 50# $13