% Cu in samples of chrysocolla

% Cu in samples of chrysocolla

mass ore absorbance [Cu(NH3)42+] % Cu in ore

0.277 g 0.127 0.242 27.6%

0.250 0.080 0.151 19.0%

0.276 0.038 0.0699 7.77%

0.265 0.054 0.101 11.8%

0.290 0.087 0.165 17.9%

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