Collecting Rocks, Gems and Minerals by Patti Polk

Collecting Rocks, Gems and Minerals by Patti Polk

Author:Patti Polk
Language: eng
Format: epub
ISBN: 9781440232756
Publisher: F+W Media


Crystal Habits

Habit

Description

Acicular

Needlelike or hairlike

Dendritic

Treelike or branching pattern

Equant

Having similar diameter in all directions

Prismatic

Tubular, elongated

Striated

Parallel grooves on crystal faces

Columnar

Made from slender parallel columns

Botryoidal

Bubbly or grape-like, globular

Druse

Coating or crust of fine, tightly packed crystals

Tabular

Flat, square, or rectangular planes

Fibrous

Tightly bundled fibers

Massive

Dense, interlocked crystalline grains



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