Types of Habits Flashcards
Fine, slender, needle-like crystals
Acicular
Exhibiting narrow bands of different colors as texture
Banded
Forming very thin threads which resemble hair
Capillary
Stout, column-like individuals
Columnar
Forming long and thin little columns which resemble wire
Filiform
Somewhat elongated crystals with well-developed prism faces
Prismatic
Cavity line with small crystals
Geode
Radiating individuals forming small spherical or hemispherical
Globular
Aggregates of large or small grains
Granular
Rounded masses similar to the botryoidal form but the protuberances are more flattened
Mammillary
Compact crystalline aggregates with no regular forms
Massive
Splitting readily into exceedingly thin plates or sheets
Micaceous
Crystals somewhat flattened in one direction
Tabular
Rounded masses somewhat resembling bunches of grapes
Botryoidal
Plates approximately parallel about a common center
Concentric
Separate from thicker stem into several slenderer ones, similar to branches which divide into smaller sheets
Dendritic
Crystals group radiating from a center
Divergent or Radiated
Surface covered with a layer of small crystals
Drusy
Groups of parallel slender thread-like strands: need not be easily separable
Fibrous
Separate easily into plates or leaves
Foliated
Aggregate of small sphere the size of fish roe
Oolitic
Small globular aggregates about the size of peas or in round concretionary grains
Pisolitic
Rounded grape-like or kidney-shaped masses
Reniform
Lattice-like or network arrangement of slender columnar or threads
Reticulated
Grains having the size of granulated sugar grains
Saccharoidal
Resembling pendant cylinders or cones
Stalactitic
Radiating individuals forming star-like or circular groups
Stellated
