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Minerals

Naturally occurring substance that is solid and stable at room temperature, representable by a chemical formula, usually abiogenic, and has an ordered atomic structure. It is different from a rock, which can be an aggregate of minerals or non-minerals, and does not have a specific chemical composition. The general definition of a mineral encompasses the following criteria: 1 - Naturally occurring 2 - Stable at room temperature 3 - Represented by a chemical formula 4 - Usually abiogenic 5 - Ordered atomic arrangement

Industry: Geology; Mining

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Minerals

stolzite

Geology; Minerals

Stolzite is a mineral, a lead tungstate; with the formula PbWO 4 . It is similar to, and often associated with, wulfenite which is the same chemical formula except that the tungsten is replaced by ...

trona

Geology; Minerals

Trona (trisodium hydrogendicarbonate dihydrate); Na 3 (CO 3 )(HCO 3 )•2H 2 O is an evaporite mineral. It is mined as the primary source of sodium carbonate in the United States, where it has replaced ...

acetamide

Geology; Minerals

Acetamide (IUPAC: ethanamide) is an organic compound with the formula CH 3 CONH 2 . It is the simplest amide derived from acetic acid. It finds some use as a plasticizer and as an industrial solvent. ...

herderite

Geology; Minerals

Herderite is a phosphate mineral belonging to the apatite, phosphate group, with formula CaBe(PO 4 )(F,OH). It forms monoclinic crystals, often twinned and variable in colour from colourless through ...

amber

Geology; Minerals

Fossilized resin from ancient forests. In ancient times the resin oozed and dripped and down trees, filling fissures and trapping debris such as seeds, leaves, feathers and insects. The resin was ...

amethyst

Geology; Minerals

Transparent purple quartz. The name originates from the Greek "amethystos" meaning "not drunken" because it was considered to be a strong antidote against drunkenness. Greek legend tells the story ...

aquamarine

Geology; Minerals

Gemstone which belongs to the Beryl family. Its name comes from the Latin "aqua" meaning water and "mar" sea. Aquamarine is usually free of inclusions and possesses a superior brilliance. The more ...

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