lead mineralの例文

• An example is the lead mineral anglesite PbSO 4.
• Del Rio's lead mineral was later renamed vanadinite for its vanadium content.
• Its high lustre, on the other hand, is more like secondary lead minerals.
• Secondary minerals consist of lead minerals like anglesite, cerussite, pyromorphite and wulfenite, and of iron sulfides like marcasite and pyrite.
• In 1770, Peter Simon Pallas visited the same site as Lehmann and found a red lead mineral that had useful properties as a pigment in paints.
• Oxidation of Cr 3 + into CrO 4 2 " ( from chromite ) and decomposition of galena ( or other primary lead minerals ) are required for crocoite formation.
• As early as 1874, one of the miners determined that the brown sand was the lead mineral cerussite, and that the sand also carried high values of silver.
• The main commodities exported from Peru to India are copper, gold, phosphates of calcium, zinc and lead minerals, fish flour, synthetic cables, and grapes.
• Associated minerals include the lead minerals anglesite and galena, the zinc minerals sphalerite, hemimorphite, and smithsonite, and gangue minerals quartz, calcite, goethite, and dolomite.
• In 1858 the exile Enrico Serpieri from the Romagna founded the foundry of Domusnovas for the exploitation of lead mineral in previously processed waste and not so much later of a second one in Fluminimaggiore.
• While many metals are superior to lead in some of these aspects, lead is more common than most of these metals; moreover, lead minerals are easier to mine and process than many other metals.
• This meant that the ore needed to be ground even finer than it was to achieve separation of the valuable mineral particles from the unwanted ( " gangue " ) minerals, and to separate the lead mineral particles from the zinc minerals.
• In 1874, gold miners at Oro City had an assay done on the heavy, black sand that had been impedeing their placer gold recovery and found that it was the lead mineral cerussite, that carried a high content of silver.
• The early miners had noted that mining for placer gold was hampered by heavy black sand in the sluice boxes, and in 1874 it was discovered that the heavy sand that impeded gold recovery was the lead mineral cerussite, which has a high silver content.