Albite NMNHC5390 74-250um

Spectrum Details

Modality

NIR

Category

mineral

Material Type

Tectosilicate

Sample ID

NMNHC5390 (also referred to as GDS30)

Collection Locality

Rutherford, VA

Spectral Purity

1b2b3b4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

EM # XRF, EPMA, ICP(Trace), WChem COMPOSITION KEYWORD Oxide ASCII Amount Weight Percent, % Oxide html COMPOSITION: SiO2 68.18 wt% SiO2 COMPOSITION: TiO2 0.01 wt% TiO2 COMPOSITION: Al2O3 20.07 wt% Al2O3 COMPOSITION: FeO 0.01 wt% FeO COMPOSITION: MnO 0.01 wt% MnO COMPOSITION: MgO 0.02 wt% MgO COMPOSITION: CaO 0.02 wt% CaO COMPOSITION: Na2O 10.37 wt% Na2O COMPOSITION: K2O 0.20 wt% K2O COMPOSITION: Total 99.88 wt% COMPOSITION: O=Cl,F,S wt% #correction for Cl, F, S COMPOSITION: New Total wt%

Sample Description

Spectra from 2.5 to 25 µm for this sample are published in: Salisbury, J. W., Walter, L. W., and Vergo, N., 1987, Mid-Infrared (2.1-25µm) Spectra of Minerals: First Edition, U.S. Geological Survey Open File Report 87-263. "Sample is translucent and light gray to white in color. This is the classic Amelia albite. Hand specimen is large (2 cm) fragment of twinned crystal. Appears very fresh. Is translucent and light gray to white in color." Sample measured for the library is the 74-250µm interval. IMAGE_OF_SAMPLE:

XRD Analysis

Pure albite.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126