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Granite

OxideAnalysisFormula
CaO1.82%0.210
MgO0.71%0.114
K2O4.12%0.284
Na2O3.69%0.386
P2O50.12%0.005
TiO20.30%0.024
Al2O314.42%0.917
SiO272.04%7.776
Fe2O31.22%0.049
FeO1.68%0.133
MnO0.05%0.005
Oxide Weight649.79
Formula Weight649.79
If this formula is not unified correctly please contact us.

The chemistry shown here is from the wikipedia page, it is an average from around the world. Obviously there will be quite a bit of variation from this in each local area since the mineral proportions of quartz and feldspar can vary alot.

An example of another approximate analysis of a pink granite in the USA:
CaO 0.4
KNaO 8.4
Al2O3 13.1
SiO2 77.1
Fe2O3 0.8
This is quite similar to the average (being lower in iron, lower in CaO, higher in SiO2.



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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Granite" descrip="" searchkey="" loi="0.00" casnumber=""> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="1.820" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.710" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="4.120" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="3.690" tolerance=""/> <oxide symbol="P2O5" name="Phosphorus Pentoxide" status="" percent="0.120" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.300" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="14.420" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="72.040" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.220" tolerance=""/> <oxide symbol="FeO" name="Ferrous Oxide" status="" percent="1.680" tolerance=""/> <oxide symbol="MnO" name="Manganous Oxide" status="" percent="0.050" tolerance=""/> </oxides> </material>


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