In a mineral, weak atomic bonding in one or more directions gives rise toGroup of answer choicessplittingcleavageconchoidal fracturecrystal facessymmetry

Minerals where bond strength is generally the same in all directions exhibit random breakage calledGroup of answer choicesFracture.Cleavage.Hardness.Color.

3. Which is the way a mineral breaks apart in an irregular way? Mineral Cleavage Crystal Fracture

Which mineral is generally identified by its conchoidal fracture and vitreous lustre?Group of answer choicesPlagioclaseOrthoclaseBiotiteQuartzAmphibole

Which of the following is NOT a defining characteristic of minerals?Group of answer choicescrystalline structurecrystal facessolidnaturally occurring

When a  substance that has NO cleavage breaks, the fractures look like ice-cream when it is scooped. These are called conchoidal fractures. They have sharp edges and were used by cavemen as cutting and scraping tools. In the list below, one is a MINERAL with conchoidal fracture. Which is it?Group of answer choicesMicaObsidianQuartzCalcite