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Single crystal habit
Free-standing
Floater
Granular, Granule
Tetragonal, Tetragon
Cubic, Cube
Rectanglar cuboidal, Rectangular cuboid
Rhombohedral, Rhombohedron
Octahedral, Octahedron
Regular dodecahedral, Regular dodecahedron, (Pyritehedron, Pyritehedral)
Rhombic dodecahedral, Rhombic dodecahedron
Deltoidal icositetrahedral, Deltoidal icositetrahedron, (Trapezohedral, Trapezohedron)
Pyramidal, Pyramid
Hexagonal pyramidal, Hexagonal pyramid
Bipyramidal, Bipyramid
Scalenohedral, Scalenohedron
Quadrangular bipyramidal, Quadrangular bipyramid
Hexagonal bipyramidal, Hexagonal bipyramid
Tabular, Table
Hexagonal tabular, Hexagonal table
Rectangular tabular, Rectangular table
Triangular tabular, Triangular table
Thick platy, Thick plate
Platy, Plate
Hexagonal platy, Hexagonal plate
Rectangular platy, Rectangular plate
Triangular platy, Triangular plate
Bladed, Blade
Discoidal, Discoid
Lathy, Lath
Nail-like, Nail
Micaceous, Mica-shape
Foliate, Foil
Flaky, Flake
Filmy, Film
Prismatic, Prism
Hexagonal prismatic, Hexagonal prism
Quadrangular prismatic, Quadrangular prism
Triangular prismatic, Triangular prism
Stout prismatic, Stout prism
Stubby prismatic, Stubby prism, Short prismatic, Short prism
Long prismatic, Long prism
Slender prismatic, Slender prism
Acicular, Needle-like, Needle
Wirely, Wire
Hairy, Hair-like, Hair
Filiform, Stringy, Filament
Fibrous, Fiber
Groups of single crystals
Aggregate, Mass, Massive
Cluster(s), Group(s)
Radial, Radiating
Spray-like, Spray
Divergent
Stellate
Fan-like, Fan
Rosette-like, Rosette
Sheaf-like, Wheat sheaf
Tuft, Tufty
Columnar, Colum
Bunched, Bundle
Banded, Band
Lamellar
Scaly, Fish scale
Concentric zoing, Concentric zone
Saccharoidal
Aggregates of crystals
Coating, Coat
Crust, Encrustations, Incrustations, Crust-like
Thin coat, Thin coating
Mossy, Moss
Matted, Mat
Drusy, Druse
Massive, Mass
Equigranular
Porphyritic
Powdery, Powder
Pulverulent
Earth, Earthy
Microcrystalline
Cryptocrystalline
Spherical, Spherulitic, Sphere
Nodular, Nodule
Spherulitic, Spherule
Globular, Globule
Amygdaloid, Amygdaloidal
Mammillary
Stalactitic
Group of spheres
Reniform, Kidney-like
Botryoidal, Botryoid
Oolitic, Oolite
Framboidal, Framboid
Dendritic, Dendrite
Coralloidal, Coralloid
Network, Net
Interlaced, Interlace
Plumose, Plumosity
Efflorescent, Efflorescence
Spongy, Sponge
Others
Crude
Boxwork
Vug, Vuggy
Porous
Dissemination, Disseminated
Sporadic dissemination, Sporadically disseminated
Amorphous
Liquid