GOETHITES Antonyms

• a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone

• a kind of sedimentary rock resembling marble or limestone but rich in magnesium carbonate

• a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer

• the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form

• a widely occurring iron oxide ore; a mixture of goethite and hematite and lepidocrocite

• an oxide of iron that is strongly attracted by magnets

• a common mineral (iron disulfide) that has a pale yellow color

• colorless glass made of almost pure silica

• a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities

• iron ore in the form of ferrous carbonate

• a meteorite consisting principally of nickel and iron