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5.
V.- PHOENICIAN SLAGS.-
The fracture of the sample is clean, colour red.
Analysis:
Oxidising medium loss on ignition .... 11,55 Reducing medium loss on ignition .. 15,25 Silica (SiO2) ................... 15,70 Alumina (Al2O3) ................. 1,75 Iron oxide (Fe2O3) ........... 70,27 Lime (CaO) .................... 0,70 Magnesia (MgO) .................. traces Copper oxide (CuO) ........... 0 Phosphoric anhydride (P2O5) ... 0,119 Total sulphur ................... 1,20 Sulphuric anhydride (SO3) ..... 3,90
One may deduce from this analysis the probable one of the material analysed:
Loss on ignition ................... 12,27 Silica (SiO2) ................... 15,70 Alumina (Al2O3) ................. 1,75 Iron oxide (Fe2O3) ........... 56,60 Iron oxide (FeO) ............. 27,30 Iron sulphate (SO4 Fe) ........ 5,66 Lime (CaO) .................... 0,70 Magnesia (MgO) .................. traces Phosphoric anhydride (P2O5) ... 0,119
We note the absence of tin, lead, nickel, of cobalt.
The absence of copper is curious; therefore one can hesitate to affirm that one is dealing with a slag resulting from the treatment of a sulphurous ore of copper and iron. Perhaps one is dealing with a decomposed sulphurous iron ore.
VI.- ORE.-
This sample handed to Mr SCHAEFFER for being the ore currently exploited contains only traces of copper. On the other hand, it is very rich in iron.
Analysis:
Loss on ignition oxidising medium .... 33,45 Loss on ignition reducing medium .... 25,95
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65 figures hard to readstruck struck outadded written in above” jug ditto, and what it repeatsword reading not certain