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Which of the following ores does not contain silver ?

$\begin {array} {1 1} (A)\;\text{Argentite} & \quad (B)\;\text{Pyrargyrite} \\ (C)\;\text{Horn silver} & \quad (D)\;\text{Chalcocite} \end {array}$

1 Answer

Chalcocite is $Cu_2S$.
Argentite is cubic silver sulfide $(Ag_2S)$
Pyrargyrite is a sulfosalt mineral consisting of silver sulfantimonide, $Ag_3SbS_3$
Chlorargyrite (Horn Silver) is the mineral form of silver chloride (AgCl).
Hence Chalcocite $Cu_2S$ does not contain silver
answered Jul 31, 2014 by thanvigandhi_1
edited Apr 1 by sharmaaparna1

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