cinople
Obsolete spelling of sinople.

ciprianiite
A monoclinic-prismatic pale brown mineral containing aluminum, beryllium, boron, calcium, fluorine, hydrogen, iron, lanthanum, cerium, praseodymium, neodymium, samarium, lithium, magnesium, oxygen, silicon, thorium, titanium, and uranium.

cirrholite
cirrolite

clairite
A triclinic yellow mineral containing hydrogen, iron, nitrogen, oxygen, and sulfur.

claraite
A triclinic blue mineral containing carbon, copper, hydrogen, oxygen, and zinc.

claringbullite
A hexagonal-dihexagonal dipyramidal mineral containing chlorine, copper, hydrogen, and oxygen.

clausthalite
A lead selenide mineral.

clausthalites
plural of clausthalite

claybeds
plural of claybed

claycourt
A court whose surface is made of crushed shale, stone or brick.

claycourts
plural of claycourt

claystone
Sedimentary rock composed of fine clay particles.
One of the concretionary nodules in alluvial deposits.

claystones
plural of claystone

clearcreekite
A monoclinic-prismatic pale greenish yellow mineral containing carbon, hydrogen, mercury, and oxygen.

cleavelandite
A white lamellar variety of albite.

cleavelandites
plural of cleavelandite

clerite
An orthorhombic-dipyramidal black mineral containing antimony, manganese, and sulfur.

cleusonite
A crichtonite composed of basic titanates

cleusonites
plural of cleusonite

cleveite
A crystalline variety of uraninite.

cleveites
plural of cleveite

clevelandite
Alternative form of cleavelandite.

clevelandites
plural of clevelandite

cliachite
Synonym of bauxite.

cliffordite
An isometric-diploidal mineral containing oxygen, tellurium, and uranium.

cliftonite
A form of graphite present in some meteorites

cliftonites
plural of cliftonite

clinoaxes
plural of clinoaxis

clinoaxis
the diagonal axis that makes an oblique angle with the vertical axis in a monoclinic crystal

clinobehoite
A monoclinic-sphenoidal mineral containing beryllium, hydrogen, and oxygen.

clinobisvanite
A monoclinic-prismatic mineral containing bismuth, oxygen, and vanadium.

clinobronzite
Synonym of pigeonite.

clinocervantite
A monoclinic-prismatic colorless mineral containing antimony and oxygen.

clinochalcomenite
A monoclinic-prismatic bluish green mineral containing copper, hydrogen, oxygen, and selenium.

clinochlore
A monoclinic-prismatic mineral containing aluminum, hydrogen, iron, magnesium, oxygen, and silicon.

clinochlores
plural of clinochlore

clinochlorite
Synonym of clinochlore.

clinochlorites
plural of clinochlorite

clinoclasite
Synonym of clinoclase.

clinoclasites
plural of clinoclasite

clinodome
A dome that is parallel to the inclined axis in a monoclinic crystal

clinodomes
plural of clinodome

clinoedrite
Synonym of clinohedrite.

clinoedrites
plural of clinoedrite

clinoferrosilite
A monoclinic-prismatic mineral containing iron, magnesium, oxygen, and silicon.

clinoholmquistite
A monoclinic-prismatic mineral containing aluminum, calcium, fluorine, hydrogen, iron, lithium, magnesium, manganese, oxygen, potassium, silicon, and sodium.

clinojimthompsonite
A monoclinic-prismatic mineral containing hydrogen, iron, magnesium, oxygen, and silicon.

clinokurchatovite
A monoclinic-prismatic light gray mineral containing boron, calcium, iron, magnesium, manganese, and oxygen.

clinomimetite
A monoclinic-prismatic mineral containing arsenic, chlorine, lead, and oxygen.

clinophosinaite
A monoclinic-prismatic light violet mineral containing calcium, oxygen, phosphorus, silicon, sodium, and strontium.

clinosafflorite
A monoclinic-prismatic mineral containing arsenic, cobalt, iron, and nickel.

clinotobermorite
A monoclinic mineral containing calcium, hydrogen, oxygen, and silicon.

clinoungemachite
A monoclinic mineral containing hydrogen, iron, oxygen, potassium, sodium, and sulfur.

coalingite
A trigonal-hexagonal scalenohedral mineral containing carbon, hydrogen, iron, magnesium, and oxygen.

cobaltarthurite
A monoclinic-prismatic mineral containing arsenic, cobalt, hydrogen, iron, magnesium, manganese, and oxygen.

cobaltaustinite
An orthorhombic-disphenoidal green mineral containing arsenic, calcium, cobalt, hydrogen, and oxygen.

cobaltkieserite
A monoclinic-prismatic pink mineral containing arsenic, cobalt, hydrogen, oxygen, silicon, and sulfur.

cobaltkoritnigite
A triclinic-pinacoidal mineral containing arsenic, cobalt, hydrogen, oxygen, and zinc.

cobaltlotharmeyerite
A monoclinic-prismatic brown mineral containing arsenic, calcium, cobalt, hydrogen, iron, nickel, and oxygen.

cobaltoadamite
A cobalt-bearing variety of adamite.

cobaltomenite
A monoclinic-prismatic mineral containing cobalt, hydrogen, oxygen, and selenium.

cobalttsumcorite
A monoclinic-prismatic mineral containing arsenic, cobalt, hydrogen, iron, lead, nickel, and oxygen.

coccolite
The mineral diopside.

coccolites
plural of coccolite

coccolith
A microscopic skeletal plate of calcite on the surface of certain marine phytoplankton; it forms chalk and limestone when fossilized

coccoliths
plural of coccolith

cochromite
An isometric-hexoctahedral black mineral containing aluminum, chromium, cobalt, iron, magnesium, nickel, and oxygen.

coconinoite
A monoclinic mineral containing aluminum, hydrogen, iron, oxygen, phosphorus, sulfur, and uranium.

cohenite
An orthorhombic-dipyramidal yellowish white mineral containing carbon, cobalt, iron, and nickel.

colemanite
A white, grey or colorless mineral form of calcium borate; a principal source of boron.

colemanites
plural of colemanite

collinsite
A triclinic-pinacoidal mineral containing calcium, hydrogen, iron, magnesium, oxygen, and phosphorus.

collophanite
Synonym of collophane.

colluvia
plural of colluvium

colluvium
A loose accumulation of rock and soil debris at the foot of a slope.

colluviums
plural of colluvium

colophonite
A coarsely granular variety of garnet.

colophonites
plural of colophonite

coloradoite
mercury telluride.

colquiriite
A trigonal-hexagonal scalenohedral white mineral containing aluminum, calcium, fluorine, and lithium.

coltan
A metallic ore, (Fe,Mn)(Ta,Nb)₂O₆, from which the elements niobium and tantalum are extracted.

coltans
plural of coltan

columbate
A salt of columbic acid; a niobate.
columbite

columbates
plural of columbate

columbite
A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum.

columbium
Former name of niobium.

colusite
An isometric-hextetrahedral bronze mineral containing antimony, arsenic, copper, germanium, sulfur, tin, and vanadium.

comancheite
An orthorhombic mineral containing bromine, chlorine, mercury, and oxygen.

combeite
A trigonal-trapezohedral colorless mineral containing calcium, oxygen, silicon, and sodium.

comblainite
A trigonal-hexagonal scalenohedral mineral containing carbon, cobalt, hydrogen, nickel, and oxygen.

compreignacite
An orthorhombic-dipyramidal mineral containing hydrogen, oxygen, potassium, and uranium.

condurrite
A variety of the mineral domeykite, or that contains domeykite copper arsenide.

congolite
A trigonal-ditrigonal pyramidal light red mineral containing boron, chlorine, iron, magnesium, manganese, and oxygen.

conichalcite
An orthorhombic-disphenoidal mineral containing arsenic, calcium, copper, hydrogen, and oxygen.

conite
A magnesian variety of dolomite.

cookeite
A monoclinic-prismatic mineral containing aluminum, hydrogen, lithium, oxygen, and silicon.

cookeites
plural of cookeite

coolgardite
A mixture of coloradoite, calaverite, sylvanite and petzite.

coombsite
A trigonal brown mineral containing aluminum, hydrogen, iron, magnesium, manganese, oxygen, potassium, and silicon.

copaline
Partly mineralized copal; an organic substance found as irregular pieces of a pale yellow colour.

copalines
plural of copaline

copalite
Synonym of copaline.

copalites
plural of copalite

coparsite
An orthorhombic-dipyramidal mineral containing arsenic, chlorine, copper, oxygen, and vanadium.