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1. To determine whether a metal is gold or pyrite, one consults a metallurgist.

2. Gold was also reported from minor quartz veins, with pyrite, chalcopyrite and galena, at Stronchullin in Strathclyde.

3. When rain water hits pyrite ore, it forms sulfuric acid, which leaches out copper and other metals.

4. When the wetlands are drained the iron pyrites in the soil are exposed to air and form sulphur acid.

5. Diagenetic pyrite in the Lower Palaeozoic rocks of the Southern Uplands provided a sulphur reservoir.

6. The scientists warn that the deposits of pyrites are too large to neutralize by liming.

7. Pyrites often contain several nonferrous metal and noble metal elementS and thus can be possessed of comprehensive utilization.

8. Typomorphic characteristics of pyrites in Au deposits, such as chemical elements, pyroelectricity and crystal form are closely related to the physio- chemical conditions under which they were formed.

9. Pyrites often contain several nonferrous metal and noble metal elementS and be possessed of comprehensive utilization.

10. We utilized the change of concentration ratio between pyrites and rocks to survey gold deposits.

11. Its gold content is closely related to pyrites and arsenopyrite.

12. Pyrites in Dianfang gold deposit of Proterozoic explosive breccia type are mainly gold - bearing minerals.

13. The Eskimos produced a slow - burning spark by striking quartz against iron pyrites.

14. The work has researched in adsorption and desorption of iodine and technetium on brass ore, lead glance, rare-earth hematite, antimony glance,[sentencedict.com/pyrites.html] molybdenite and iron pyrites and so on.

15. It's a new - geochemical method, which gold deposits are surveyed with pyrites.

16. The constituents of six ore minerals, especially those of pyrites and cassiterite, are obviously controlled by temporal factors.