cuzticite
A hexagonal mineral containing hydrogen, iron, oxygen, and tellurium.

cyanochroite
A monoclinic-prismatic green blue mineral containing copper, hydrogen, oxygen, potassium, and sulfur.

cyanophyllite
An orthorhombic-dipyramidal greenish blue mineral containing aluminum, antimony, copper, hydrogen, and oxygen. A polytype of cualstibite, and discredited for such in 2012.

cylindrite
A sulfosalt mineral, containing tin, lead, antimony and iron, whose triclinic pinacoidal crystals often occur as tubes or cylinders.

cymolite
Rare spelling of cimolite.

cymolites
plural of cymolite

cymophane
A translucent yellowish chatoyant chrysoberyl.

cymophanes
plural of cymophane

cyrilovite
A tetragonal-trapezohedral mineral containing hydrogen, iron, oxygen, phosphorus, and sodium.

cyrtolite
Synonym of zircon.

dadsonite
A monoclinic mineral containing antimony, chlorine, lead, and sulfur.

dakeite
Synonym of schröckingerite.

dalyite
A triclinic-pinacoidal colorless mineral containing aluminum, iron, magnesium, oxygen, potassium, silicon, sodium, titanium, and zirconium.

damaraite
An orthorhombic-pyramidal colorless mineral containing chlorine, hydrogen, lead, and oxygen.

damiaoite
An isometric-hexoctahedral bright white mineral containing indium and platinum.

damkjernite
A hypabyssal rock with phenocrysts of pyroxene, biotite, and barkevikitic hornblende in a groundmass of perovskite, magnetite, and calcite.

danaite
A cobaltiferous variety of arsenopyrite.

danalite
An isometric-hextetrahedral mineral containing beryllium, iron, oxygen, silicon, and sulfur.

danalites
plural of danalite

danbaite
An isometric mineral containing copper and zinc.

danburite
A crystalline mineral similar to topaz.

danburites
plural of danburite

danielsite
An orthorhombic gray mineral containing copper, mercury, silver, and sulfur.

daomanite
An orthorhombic-pyramidal light greenish yellow mineral containing arsenic, copper, platinum, and sulfur.

daphnite
Synonym of chamosite.

daqingshanite
A trigonal mineral comprising mostly strontium, cerium, and oxygen.

darapiosite
A hexagonal-dihexagonal dipyramidal mineral containing lithium, manganese, oxygen, potassium, silicon, sodium, and zirconium.

darapskite
A monoclinic-prismatic colorless mineral containing hydrogen, nitrogen, oxygen, sodium, and sulfur.

dashkesanite
A chloriniferous mineral containing sodium, potassium, iron and magnesium.

dashkovaite
A monoclinic-prismatic white mineral containing carbon, hydrogen, magnesium, and oxygen.

davanite
A triclinic-pinacoidal colorless mineral containing oxygen, potassium, silicon, and titanium.

davidite
A particular mineral.

davreuxite
A monoclinic-prismatic mineral containing aluminum, hydrogen, manganese, oxygen, and silicon.

davyne
A hexagonal-dipyramidal mineral containing aluminum, calcium, chlorine, oxygen, potassium, silicon, sodium, and sulfur.

deanesmithite
A triclinic-pinacoidal orange red mineral containing chromium, mercury, oxygen, and sulfur.

deerite
A monoclinic-prismatic black mineral containing aluminum, hydrogen, iron, manganese, oxygen, and silicon.

defernite
An orthorhombic-dipyramidal mineral containing calcium, carbon, chlorine, hydrogen, oxygen, and silicon.

dehrnite
Synonym of lewistonite.

delatynite
A variety of amber found in Deliatyn, Ukraine.

delhayelite
An orthorhombic-dipyramidal mineral containing aluminum, calcium, chlorine, fluorine, hydrogen, oxygen, potassium, silicon, sodium, and sulfur.

deliensite
An orthorhombic mineral containing hydrogen, iron, oxygen, sulfur, and uranium.

delindeite
A monoclinic-prismatic gray pink mineral containing aluminum, barium, hydrogen, iron, oxygen, potassium, silicon, sodium, and titanium.

dellaite
A triclinic-pinacoidal colorless mineral containing calcium, hydrogen, oxygen, and silicon.

dellaventuraite
A monoclinic-prismatic pinkish red mineral containing aluminum, calcium, hydrogen, iron, lithium, magnesium, manganese, nickel, oxygen, potassium, silicon, sodium, titanium, and zinc.

deloneite
A mineral found in Russia.

deloryite
A monoclinic-prismatic mineral containing copper, hydrogen, molybdenum, oxygen, and uranium.

delrioite
A monoclinic-prismatic mineral containing calcium, hydrogen, oxygen, strontium, and vanadium.

delvauxite
A yellow or brown amorphous mineral, sometimes forming a botryoidal mass or stalactites.

delvauxites
plural of delvauxite

demesmaekerite
A triclinic-pinacoidal mineral containing copper, hydrogen, lead, oxygen, selenium, and uranium.

dendrachate
An arborescent or dendritic agate.

dendrachates
plural of dendrachate

denisovite
A monoclinic mineral containing calcium, fluorine, hydrogen, oxygen, potassium, silicon, and sodium.

denningite
A tetragonal-ditetragonal dipyramidal mineral containing manganese, oxygen, tellurium, and zinc.

densipan
The albic horizon of a spodosol

densipans
plural of densipan

depressants
plural of depressant

derbylite
A monoclinic-prismatic mineral containing antimony, hydrogen, iron, oxygen, and titanium.

derriksite
An orthorhombic-pyramidal mineral containing copper, hydrogen, oxygen, selenium, and uranium.

dervillite
A monoclinic-prismatic brownish black mineral containing arsenic, silver, and sulfur.

desautelsite
A trigonal bright orange mineral containing carbon, hydrogen, magnesium, manganese, and oxygen.

desmine
The mineral stilbite.

despujolsite
A hexagonal-ditrigonal dipyramidal lemon mineral containing calcium, hydrogen, manganese, oxygen, and sulfur.

dessauite
A trigonal-rhombohedral black mineral containing iron, lead, oxygen, strontium, titanium, uranium, and yttrium.

destinezite
A well-crystallized form of diadochite.

devilline
A monoclinic-prismatic mineral containing calcium, copper, hydrogen, oxygen, and sulfur.

devillite
Synonym of devilline.

deweylite
A mixture of lizardite and stevensite.

deweylites
plural of deweylite

dewindtite
An orthorhombic-dipyramidal mineral containing hydrogen, lead, oxygen, phosphorus, and uranium.

diabase
A fine-grained igneous rock composed mostly of pyroxene and feldspar.

diabases
plural of diabase

diaboleite
A blue-colored mineral with formula Pb₂CuCl₂(OH)₄.

diachronism
A sedimentary rock formation in which the material, although of a similar nature, varies in age with the place where it was deposited.

dialogite
rhodochrosite.

dialogites
plural of dialogite

diamondoid
Any of several polycyclic hydrocarbons whose cagelike structure resembles part of the diamond crystal lattice.

diamondoids
plural of diamondoid

dianite
Synonym of columbite.

diaoyudaoite
A hexagonal-dihexagonal dipyramidal mineral containing aluminum, oxygen, and sodium.

diaphaneities
plural of diaphaneity

diaphaneity
transparency

diaphorite
A monoclinic-prismatic mineral containing antimony, lead, silver, and sulfur.

diaspore
A natural hydrate of aluminium, sometimes forming stalactites.
A gemstone consisting of hydrate of aluminium in crystal form.
seeds and fruit together regarded as a dispersal unit.

diaspores
plural of diaspore

dichroite
Iolite.

dichroites
plural of dichroite

dickinsonite
A monoclinic-domatic mineral containing aluminum, calcium, hydrogen, iron, lithium, manganese, oxygen, phosphorus, potassium, and sodium.

dickthomssenite
A monoclinic-prismatic light golden brown mineral containing hydrogen, magnesium, oxygen, and vanadium.

dienerite
An isometric-hextetrahedral gray white mineral containing arsenic and nickel.

dietrichite
A monoclinic-prismatic mineral containing aluminum, hydrogen, iron, manganese, oxygen, sulfur, and zinc.

dietzeite
A monoclinic-prismatic golden yellow mineral containing calcium, chromium, iodine, and oxygen.

digislate
A computer resembling a slate or tablet.
A clapperboard with a digital display.

digislates
plural of digislate

diluvialism
The explaining of geological phenomena by the Noachian deluge.

dimorphite
An orthorhombic-dipyramidal orange mineral containing arsenic and sulfur.