1. Sulfide Minerals Here you will find a short summary of the sulfides that you are studying in lab

2. Important Sulfide Minerals PyriteFeS2 AresonopyriteFeAsS SphaleriteZnS ChalcopyriteCuFeS2 Covellite GalenaPbS PyrrhotiteFe 1-x S CinnabarHgS MolybdeniteMoS Enargite Oriment Stibnite

3. Important Sulfide Minerals Sulfide minerals have a restricted composition range and solid solutions are rare Most sulfides (except sphalerite) are opaque semiconductors with metallic luster

4. Sulfide parageneses Most sulfides are deposited by hydrothermal solutions (e.g., galena, sphalerite, chalcopyrite). Metal cations are transported by cl-1 complexes at high temperature.

5. Sulfide parageneses Some are primary minerals in igneous and metamorphic rocks (e.g., Molybdenite, pyrrhotite) and crystallize from the magma. Sulfides also may form, in sediments under the reducing conditions resulting from decay of organic matter.

8. Pyrite Cubic Most widespread sulfide mineral. Found in all geological environments Marcasite is a related polymorph formed at low Temperature.

9. Pyrrhotite Found as accessory phase in igneous rocks.

10. Chalcopyrte Primary copper mineral,in porphyry-copper deposits. Most widespread copper mineral

11. Arsenopyrite Primary arsenic mineral

12. Molybdenite Primary Molybdenum ore High temperature deposite

13. Sphalerite Primary ore mineral for Zn

14. Galena Primary ore mineral for Pb