Geology

Geology

The scientific study of the origin, history, and physical features of the earth.

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Geology > 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 ...

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, ...

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 ...

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 ...

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 ...

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 ...

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 ...