Mineral Resources On-Line Spatial Data

Silicon, as silicon dioxide, in weight percent, by semi-quant direct-current arc emission spectrography.

Parameter	Description
SiO2_pct_AES_HF	Silicon, as silicon dioxide, in weight percent, by inductively coupled plasma-atomic emission spectroscopy after multi-acid digestion with HF.
SiO2_pct_AES_SF	Silicon, as silicon dioxide, in weight percent, by inductively coupled plasma-atomic emission spectroscopy after sinter or fusion digestion.
SiO2_pct_CM	Silicon, as silicon dioxide, in weight percent, by colorimetry.
SiO2_pct_ES	Silicon, as silicon dioxide, in weight percent, by semi-quant direct-current arc emission spectrography.
SiO2_pct_ES_Q	Silicon, as silicon dioxide, in weight percent, by quant direct-current arc emission spectrography.
SiO2_pct_GV	Silicon, as silicon dioxide, in weight percent, by gravimetry.
SiO2_pct_MS_SF	Silicon, as silicon dioxide, in weight percent, by inductively coupled plasma-mass spectroscopy after sinter or fusion digestion.
SiO2_pct_WDX	Silicon, as silicon dioxide, in weight percent, by wavelength-dispersive X-ray fluorescence spectroscopy.

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U.S. Department of the Interior | U.S. Geological Survey
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Page Last modified: 13:42 on 06-Apr-2012