PLATINUM

Platinum is a chemical element with the atomic symbol Pt and an atomic number of 78.

Uses Dolomite is used as an ornamental stone, as a raw material for the manufacture of cement, and as a source of magnesium oxide. It is an important petroleum reservoir rock, and serves as the host rock for large strata- bound Mississippi Valley- Type (MVT) ore deposits of base metals (that is, readily oxidized metals) such as lead, zinc, and copper. Where calcite limestone is unco mm on or too costly, dolomite is sometime used in its place as a flux (impurity remover) for the smelting of iron and steel. In horticulture, dolomite and dolomitic limestone are added to soils and soilless potting mixes to lower their acidity ("sweeten" them) . Home and container gardening are co mm on examples of this use. General Dolomite Information Chemical Formula: CaMg (CO3) 2 Composition: Molecular Weight = 184. 40 gm Calcium 21. 73 % Ca 30. 41 % CaO Magnesium 13. 18 % Mg 21. 86 % MgO Carbon 13. 03 % C 47. 73 % CO2 Oxygen 52. 06 % O ______ ______ 100. 00 % 100. 00 % = TOTAL OXIDE Empirical Formula: CaMg (CO3) 2 IMA Status: Valid Species (Pre- IMA) 1791 Locality: Link to MinDat. org Location Data. Name Origin: Named after the French mineralogist and geologist, Deodat Guy Tancrede Gratet de Dolomieu (1750- 1801) . Synonym: ICSD 31336 PDF 36- 426