As an adjective monoclinic

is (crystallography) having three unequal axes with two perpendicular and one oblique intersections.

As a noun illite is

(mineralogy) a micaceous phyllosilicate mineral with aggregates of grey or white monoclinic crystals.

As a proper noun crystal

is .

As a noun illite is

(mineralogy) a micaceous phyllosilicate mineral with aggregates of grey or white monoclinic crystals.

Hydromica is a synonym of illite.

As nouns the difference between hydromica and illite

is that hydromica is (mineral) an alternate name for illite while illite is (mineralogy) a micaceous phyllosilicate mineral with aggregates of grey or white monoclinic crystals.

Illite is a synonym of hydromuscovite.

As nouns the difference between hydromuscovite and illite

is that hydromuscovite is an alternate name for illite while illite is a micaceous phyllosilicate mineral with aggregates of grey or white monoclinic crystals.

Idrialine is a synonym of idrialite.

In mineralogy terms the difference between idrialite and idrialine

is that idrialite is a soft, orthorhombic hydrocarbon mineral, usually greenish-yellow to light brown in colour with bluish fluorescence while idrialine is an alternate name for idrialite.

As an adjective orthorhombic

is having three unequal axes at right angles.

As a noun idrialite is

a soft, orthorhombic hydrocarbon mineral, usually greenish-yellow to light brown in colour with bluish fluorescence.

As nouns the difference between hydrocarbon and idrialite

is that hydrocarbon is (organic chemistry) a compound consisting only of carbon and hydrogen atoms while idrialite is (mineralogy) a soft, orthorhombic hydrocarbon mineral, usually greenish-yellow to light brown in colour with bluish fluorescence.

As nouns the difference between mineral and idrialite

is that mineral is mineral while idrialite is (mineralogy) a soft, orthorhombic hydrocarbon mineral, usually greenish-yellow to light brown in colour with bluish fluorescence.

As nouns the difference between crystal and zabuyelite

is that crystal is a solid composed of an array of atoms or molecules possessing long-range order and arranged in a pattern which is periodic in three dimensions while zabuyelite is the natural mineral form of lithium carbonate, forming colourless vitreous monoclinic crystals.

As an adjective crystal

is very clear.

As a proper noun Crystal

is {{given name|female|from=English}}.

As an adjective hexagonal

is having six edges, or having a cross-section in the form of a hexagon.

As a noun zaccagnaite is

a white hexagonal mineral composed of zinc, aluminium, carbon, oxygen, and hydrogen.