CuS specimens-Chemical etching

Material: CuS specimens
Type: Micro
Method: Chemical etching
Etchant (electrolyte): 1 part HNO3, 10 parts H2O.
Procedure: No data.
Note: CuS specimens as the natural mineral covellile. Solution used as a slow removal etch of the purplish lamish on surfaces in a general study of the copper minerals.
Source: Perrin Walker, William H Tarn: Handbook of Metal Etchants, CRC Press, Boca Raton, Florida, USA, 1990, p.355.














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