Nontronite SWa-1.b lt2um

Spectrum Details

Modality

FTIR

Category

mineral

Material Type

Phyllosilicate

Sample ID

SWa-1.a, SWa-1.b

Collection Locality

Grant County, Washington

Spectral Purity

1b2b3b4b # SWa-1.a # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1a2a3a4_ # SWa-1.b # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

XRF # XRF, EPMA, ICP(Trace), WChem

Sample Description

A spectrum for this sample was published by: Clark, R.N., T.V.V. King, M. Klejwa, G. Swayze, and N. Vergo, 1990, High spectral resolution reflectance spectroscopy of minerals: J. Geophys Res. 12653-12680. who noted that it was spectrally pure. Grain size fractions are indicated by the extension after the sample number: .a = bulk .b = less than 2µm IMAGE_OF_SAMPLE: NO PHOTO

XRD Analysis

Analysis by Norma Vergo indicates the sample is Fe-smectite + small amounts of quartz, the less than 2µm cut was pure smectite.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

1,801