Nontronite+others

Spectrum Details

Modality

NIR

Category

soil

Material Type

Intimate

Sample ID

CU00-13A

Collection Locality

5 km north of western center, Cuprite, Nevada, USA

Spectral Purity

1b2_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 from a weathered outcrop of the Tertiary rhyolitic Spearhead member of the Stonewall Flats Tuff about 5 km north of the western center at Cuprite, NV. Rocks at this site bordering a small drainage were weathering in an exfoliation pattern.

XRD Analysis

Clay separate contains smectite (major), kaolinite (trace), and mica (trace). XRD was unable to identify specific mineralogy of the smectite.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126