Alunite K

Spectrum Details

Modality

NIR

Category

soil

Material Type

Intimate

Sample ID

CU98-5C

Collection Locality

Eastern Alteration 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 the southeastern portion of the eastern alteration center at Cuprite, NV. The sample was a volcanic rhyolite tuff of Tertiary age prior to hydrothermal alteration about 7.6 Ma.

XRD Analysis

alunite (major), opal-A (major), tridymite (minor), and quartz (trace).

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126