Vermiculite+5wt%amph.

Spectrum Details

Modality

NIR

Category

man-made

Material Type

Expanded Phyllosilicates plus amphibole

Sample ID

GDS327, GDS451, GDS454

Collection Locality

Fibrous amphibole from Libby, MT

Spectral Purity

1b2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Sample Description

Samples were prepared mixtures of Scotts expanded verimculite (GDS327) plus fibrous Libby amphibole in 0 wt%, 1wt%, and 5wt% increments. Samples were well mixed. Added amphibole was finely ground prior to mixing. IMAGE_OF_SAMPLE: Not Available

XRD Analysis

Rietveld refinement XRD analysis of GDS327 expanded vermiculite's (limited quantities of sample and no internal standard) Cincinnati Method sink fraction indicates the presence of major diopside and tridymite, minor calcite and quartz (Fig. GDS327.XRD.2). Qualitative XRD analysis of the bulk sample indicates the presence of hyrobiotite, vermiculite, phlogopite, and biotite (Fig. GDS327.XRD.3). Figures GDS327.XRD.5 to 10 show XRD analyses for this Scotts sample mixed with amphibole (GDS328) from Libby, Montana.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126