USE OF CRYSTAL FORMS AND HABITS IN MINERAL IDENTIFICATION

The atoms within the crystal of a mineral are arranged in a regular fashion to form a lattice, and the crystal exhibits a shape with surface regularity which reflects its internal symmetry[Ref1]. The shape of a crystal is often typical of a mineral. and often typical the location where found; thus, crystal shape comprised of. . . Read More

USES OF CLEAVAGE, PARTING, AND FRACTURE IN MINERAL IDENTIFICATION-I

Structural failure of a mineral crystal can occur by cleavage, by parting, or by fracture.  The characteristics of any of these failure modes exhibited by a mineral can be useful as tools towards its identification. In this Blog I’ll discuss the properties of cleavage and their use in identifying minerals and follow with a second. . . Read More