Which one of the following minerals is formed by decomposition of rocks, leaving a residual mass of weathered material? |
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(a) |
Coal |
(b) |
Bauxite |
(c) |
Copper |
(d) |
Iron |
Which one of the following minerals is formed by decomposition of rocks, leaving a residual mass of weathered material? |
|||
(a) |
Coal |
(b) |
Bauxite |
(c) |
Copper |
(d) |
Iron |