| These may be reprecipitated and incorporated into authigenic materials, such as glauconite, various carbonates, and iron and manganese oxides. |
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| The metal is redissolved in aqua regia, then reprecipitated with ammonium chloride and calcined to pure metal. |
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| After the palladium salts are recovered by filtration, they are redissolved and reprecipitated to form a pure salt, and this is converted to metallic form, usually by chemical reduction with formic acid. |
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