Natrolite

Spectrum Details

Modality

NIR

Category

mineral

Material Type

Tectosilicate

Sample ID

HS169.1B, HS169.2B, HS169.3B, HS169.4B

Collection Locality

Poonah, India

Spectral Purity

1b2_3_4_ # HS169.1B # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1b2_3_4_ # HS169.2B # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1b2b3b4b # HS169.3B # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1b2_3_4_ # HS169.4B # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

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

Sample Description

Dimorphous with Tetranantrolite. "T-22 Natrolite 169B--Poonah, India. Na2Al2Si3O102H2O: The spectral features in this sample are very well resolved and the spectrum displays multiple sharp and weak features, all due to H2O throughout the entire mid- infrared. The main features are at 0.98µ, 1.19µ, 1.46µ, 1.95µ, 2.2µ, and 2.44µ. The differences in these natrolite spectra indicate that the water is less randomly located in the Poonah sample than in the Springfield sample." Hunt, G.R., J.W. Salisbury, and C.J. Lenhoff, 1973, Visible and near-infrared spectra of minerals and rocks: VI. Additional silicates. Modern Geology, v. 4, p. 85-106. Grain size fractions are indicated by the extension after the sample number: .1B = IMAGE_OF_SAMPLE:

XRD Analysis

Pure natrolite. (Norma Vergo)

X Units

cm⁻¹

Y Units

Absorbance

Data Points

2,126