1. There are vertical zoning of mineralization, that is chalcocite in the upper, enargite at the elevation between 580 to 400m, and chalcopyrite below the 400m.

2. Leaching of copper from chalcocite with acidic acetonitrilecopper sulphate system was studied.

3. Ore minerals of Luchang-Datongchang Ag-Cu ores include chalcocite , digenite, bornite, stromeyerite and eucairite which are associated with calcite as a cement.

4. The paper discusses a new method for producing cupric feed copper sulfate by chalcocite and ehalcopyite.

5. This paper has been studied to soak from the Chalcocite to take copper with the sal volatile containing the active reagent (ammonium peroxydisulphate or potassium permanganate).

6. By employing EPMA and SEM techniques we examined the compositions of nucleus, cell-walls and cells of wood-cytoplasm in chalcocite and digenite and the shapes of wood cells.

7. The process of dump bioleaching of secondary copper sulfide as chalcocite and covelite includes two stages, in the first stage, the leaching speed is faster than that in the second stage.

8. Au and Ag in ore occur mainly in more than 11 Au Ag minerals; a few in lattice of chalcopyrite, bornite, chalcocite, pyrite and galena in isomorphism.

9. Chemical kinetics and thermodynamics of copper minerals constrain that chalcocite is main and ore zoning form in sandstone copper deposits.