Emery
- corundom
Very hard mineral used as an abrasive.
- emery
A hard grey-black mineral consisting of corundum and either hematite or magnetite; used as...
Amphibole Group
- amphibole group
A group of minerals with similar crystal structures containing a silicate chain...
- amphibole
A mineral or mineral variety belonging to the amphibole group.
Bauxite
- bauxite
A clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum...
- gibbsite
White crystalline mineral consisting of aluminum hydroxide; a constituent of bauxite and...
Also contains
- gadolinite
A mineral that is a source of rare earths; consists of silicates of iron and beryllium...
- garnet
Any of a group of hard glassy minerals (silicates of various metals) used as gemstones and...
- apatite
A common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate;...
- bastnasite
A yellow-to-brown mineral that is a source of rare earth elements.
- beryl
The chief source of beryllium; colored transparent varieties are valued as gems.
- carnallite
A white or reddish mineral consisting of hydrous chlorides of potassium and magnesium;...
- earth color
A colored mineral used as a pigment.
- fergusonite
A dark mineral consisting of oxides of yttrium and erbium and tantalum and other mi...
- chrysoberyl
A rare hard yellow green mineral consisting of beryllium aluminate in crystal form;...
- fluorite
A soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source...
- borax
An ore of boron consisting of hydrated sodium borate; used as a flux or cleansing agent.
- bornite
A mineral consisting of sulfides of copper and iron that is found in copper deposits.
- celestite
A mineral consisting of strontium sulphate.
- cassiterite
A hard heavy dark mineral that is the chief source of tin.
- chalcocite
A heavy grey mineral that is an ore of copper.
- cerussite
A mineral consisting of lead carbonate that is an important source of lead.
- chalcopyrite
A yellow copper ore (CuFeS2) made up of copper and iron sulfide.
- chromite
A brownish-black mineral; the major source of chromium.
- cinnabar
A heavy reddish mineral consisting of mercuric sulfide; the chief source of mercury.
- halite
Naturally occurring crystalline sodium chloride.
- cobaltite
A rare silvery-white mineral; important ore of cobalt.
- cordierite
A blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used...
- cristobalite
A white mineral consisting of silica; found in volcanic rocks.
- cuprite
A mineral consisting of cuprous oxide that is a source of copper.
- cryolite
A white mineral consisting of fluorides of aluminum and sodium; a source of fluorine.
- dolomite
A light colored mineral consisting of calcium magnesium carbonate; a source of magnesium;...
- galena
Soft blue-grey mineral; lead sulfide; a major source of lead.
- garnierite
A green mineral consisting of hydrated nickel magnesium silicate; a source of nickel.
- germanite
A rare reddish-grey mineral consisting of a copper iron germanium sulfide.
- amblygonite
A white or grey mineral consisting of lithium aluminum phosphate; a source of lithi...
- argentite
A valuable silver ore consisting of silver sulfide (Ag2S).
- arsenopyrite
A silver-white or grey ore of arsenic.
- argyrodite
A rare steel-grey mineral consisting of silver and germanium and sulfur.
- baddeleyite
A mineral consisting of zirconium oxide.
- chlorite
A generally green or black mineral; it occurs as a constituent of many rocks typically...
- columbite-tantalite
A valuable black mineral combining niobite and tantalite; used in cell phones...
- crocolite
A rare lead chromite mineral that forms bright orange crystals.
- erythrite
A reddish mineral consisting of hydrated cobalt arsenate in monoclinic crystalline form...
- glauconite
A green mineral consisting of hydrated silicate of potassium or iron or magnesium or...
- greenockite
Ore of cadmium; a rare yellowish mineral consisting of cadmium sulphide in crystalline...
- ader wax
A waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum;...
- aragonite
A mineral form of crystalline calcium carbonate; dimorphic with calcite.
- augite
Dark-green to black glassy mineral of the pyroxene group containing large amounts of aluminum...
- asphalt
A dark bituminous substance found in natural beds and as residue from petroleum distillation;...