Hematitic Alt. Tuff

Spectrum Details

Modality

NIR

Category

soil

Material Type

Intimate

Sample ID

CU91-223

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 is of a hematitically altered rhyolite tuff from the relict eastern hydrothermal center at Cuprite, NV. Alteration occurred about 7.6 Ma. Sample was collected from the northwest part of the eastern center.

XRD Analysis

Poorly crystallized hematite, kaolinite, quartz, calcite, and tridymite (trace?)

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126