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Oxide and Cation Compositions of Olivine Grains from Drill Core in the Duluth Complex, Minnesota


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Schulte, R.F., Piatak, N.M., Seal, R.R., and Woodruff, L.G., 2017, Oxide and cation compositions of olivine grains from drill core in the Duluth Complex, Minnesota: U.S. Geological Survey data release,


The table contains oxide and cation compositions of olivine grains from drill core of the Duluth Complex, Minnesota. The oxides were determined by electron probe microanalysis (EPMA) and are reported in weight percent (wt%). The cations were calculated based on the oxide compositions and are reported in mole percent (mol%). Olivine is a magnesium iron orthosilicate mineral with the formula (Mg2+, Fe2+)2SiO4. Olivine forms a solid solution series with magnesium (Mg) at one end and iron (Fe) at the other. Forsterite (Mg2SiO4) is the magnesium endmember and fayalite (Fe2SiO4) is the iron endmember. Minor elements can substitute into the crystal structure, such as manganese (Mn) and nickel (Ni). To better understand the chemical composition [...]


Point of Contact :
Nadine Piatak
Originator :
Ruth F. Schulte, Nadine M. Piatak, Robert R. Seal, II, Laurel G. Woodruff
Metadata Contact :
Peter N Schweitzer
Publisher :
U.S. Geological Survey
Distributor :
GS ScienceBase
USGS Mission Area :
Energy and Minerals
SDC Data Owner :
Mineral Resources Program

Attached Files

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Olivine Compositions.csv
“Olivine Compositions”
42.44 KB text/csv


Data were collected in order to determine the chemical composition of olivine grains found in drill core from the Duluth Complex.

Additional Information


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DOI doi:10.5066/F7M61J42

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