Pectolite

Spectrum Details

Modality

FTIR

Category

mineral

Material Type

Inosilicate

Sample ID

NMNH94865.a, NMNH94865.b

Collection Locality

Thetford, Ontario, Canada

Spectral Purity

1b2b3b4_ # NMNH94865.a # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1b2b3b4b # NMNH94865.b # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

Composition / XRD

EPMA # XRF, EPMA, ICP(Trace), WChem

Sample Description

Forms series with Serandite. "Results of petrographic examination: Hand specimen consists of one small (1mm x 1cm) and one larger (5mm x 6mm x 1cm) fragment. The larger one has a large area of albite (1/4 of the sample). The rest is composed of pectolite needles. Under petrographic microscope, sample has 2% of an isotropic mineral. Fibrous nature of mineral precludes effective sieving. Fine fraction separated from coarse fraction by elutriation in acetone." 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. Grain size fractions are indicated by the extension after the sample number: a = 1-3 mm b = IMAGE_OF_SAMPLE: Photo is of the fine grained sample "b".

XRD Analysis

Pure pectolite. 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. Pure (Norma Vergo).

X Units

cm⁻¹

Y Units

Absorbance

Data Points

1,801