Question

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Question 4 i)The unit cell shown below is that of the Pt sulphide mineral cooperite (cell dimensions are indicated; all cell corners are right angles): Pt O s 3.48 A a) How many formula units does the unit cell contain? b) What is the co-ordination of Pt and S in the cell? c) What is the crystal system of the mineral? d) What is the formula of the mineral? ii) Give a general account of the mineralogy, ore deposits and processing of the platinum group elements (PGE). How does this compare, in terms of complexity, with the processing of gold ores? 6-11 A

Answer 1

C. Tetragonal crystal system

D. Formula is (Pt, Pd, Ni)S

This is a mineral contains platinum palladium and nickel in it.