Alunite RES-3 Na Syn (450C)

Spectrum Details

Modality

NIR

Category

mineral

Material Type

Sulfate

Sample ID

RES-3

Collection Locality

Not available

Spectral Purity

1_2a3_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

Synthetically prepared pure Na-endmember sample made at 450C. Sample composition is 100% mole fraction Na. See: Stroffregen, R.E., and C.N. Alpers, Observations on the unit-cell dimensions, H2O contents, and delD values of natural and synthetic alunite, American Mineralogist, 77, 1092-1098, 1992. IMAGE_OF_SAMPLE:

XRD Analysis

see:Stroffregen, R.E., and C.N. Alpers, Observations on the unit-cell dimensions, H2O contents, and delD values of natural and synthetic alunite, American Mineralogist, 77, 1092-1098, 1992.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126