Cleavage, Crystal Structure, Fracture & Mohs Scale

Cleavage, tendency of a crystalline substance to split into fragments bounded by plane surfaces. Although cleavage surfaces are seldom as flat as crystal faces, the angles between them are highly characteristic and valuable in identifying a crystalline material. Cleavage occurs on planes where the

Mineral Crystals: Unit Cells, Lattices and Cleavage Planes, Earth Science

Gem Identification

Identifying Minerals Using Cleavage and Fracture

Opal

Mineral - Crystal Habit, Aggregation

Diagram illustrating the fracture planes for mannitol crystals

3 Mineral Properties – Mineralogy

Lesson 2 Reading Guide - Vocab luster streak cleavage fracture crust 13.2 The Geosphere Pages mantle lithosphere asthenosphere core. - ppt download

Mineral Crystals: Unit Cells, Lattices and Cleavage Planes

Does quartz fracture or show cleavage? - Quora

Cleavage and fracture

Chapter 3 Section 2.  Color  Luster  Streak  Cleavage & Fracture  Hardness  Density  Special Properties. - ppt download

Orthoclase - Wikipedia