Muscovite-medhi-Al

Spectrum Details

Modality

NIR

Category

soil

Material Type

Intimate

Sample ID

CU91-252D

Collection Locality

Western Alteration Center, Cuprite, Nevada, USA

Spectral Purity

1c2_3_4_ # 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

This sample was collected 200 meters west of the southwestern end of the western alteration center at Cuprite, NV. The sample is from lower Cambrian Harkless Phyllite.

XRD Analysis

Quartz (major), muscovite (mostly 2M1 with a trace of 1M polytypes), clinochlore (trace). Absence of XRD detection of goethite may be due to its presence as a thin coating or its fine grained crystal size. Jarosite may not be abundant enough to be detected by XRD.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126