Norma Dr. Caco (2012) Implementation of the calculation of the CIPW norm designed by Cross, Iddings, Pirsson and Washington. Data should come in a txt file with the following fields separated by tabs; a row with labels is allowed providing that they begin with the '%' character: %SiO₂ TiO₂ Al₂O₃ Fe₂O₃ FeO MnO MgO CaO Na₂O K₂O P₂O₅ CO₂ SO₃ S F Cl Sr Ba Ni Cr Zr Major elements, including S,F and Cl should be in weight % trace elements (only Sr, Ba, Ni, Cr, Zr) should be reported in ppm if the analysis doesn't have the element fill the cell with a zero and the norm will be calculated without such element. If speciation of iron is not known, fill the ferric iron column with zeros and the ferrous iron column with total iron calculated as follows: FeO= 0.8998*Fe₂O₃ Speciation of the iron will be estimated according to an intrinsic buffer, following Cortes et al., (2006). Available options are QFM, NNO and HM. The norm can be also calculated normalized if desired (although not recommended). To upload the data into Norma input field simply right click on the data window (Command-click in a Mac) will display an uploading menu. When your data is uploaded, click on "Simulate" and the result will be displayed in the output window. Results can be downloaded clicking on the download button located in the upper-right corner of the window. Enjoy!

Researchers should cite this work as follows:

• Joaquin Alberto Cortes (2022), "Norma," https://theghub.org/resources/norma.

  BibTex | EndNote

1. geochemistry
2. petrogenesis
3. petrology