1. Instead of breaking in broad, single cleavage planes like the micas, the cleavage surface of an Amphibole mineral tends to display a large number of small, offset planes that help give the mineral a splintery appearance.

2. Bone dry - without a trace of moisture; as dry as a weathered bone; "bone-dry leaves are a fire hazard"; "a drier to get the clothes Bone dry" bone-dry dry - free from liquid or moisture; lacking natural or normal moisture or depleted of water; or no longer wet; "dry land"; "dry clothes"; "a dry climate"; "dry splintery boards"; "a