Basalt weathered

Spectrum Details

Modality

NIR

Category

soil

Material Type

Intimate

Sample ID

BR93-43

Collection Locality

Newberry Mtns, Southeast of Barstow, CA, USA

Spectral Purity

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

Composition / XRD

None # XRF, EPMA, ICP(Trace), WChem

Sample Description

Slightly to moderately weathered basalt with a slight vesicular texture; some filled with calcite. Rock has a fine grained ground mass with a few augite phenocrysts. Its purple color is due to hematite. Anorthite (Tectosilicate - Plagioclase, Ca end member, Feldspar group), Augite (Inosilicate - Pyroxene group), Calcite (Carbonate - Calcite group), Hematite (Oxide - Hematite group)

XRD Analysis

Major: Calcite Minor: Anorthite, Augite, Hematite Trace: Montmorillonite Note: Calcite is a minor component of the rock as a whole

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126