Dolomite

Spectrum Details

Modality

FTIR

Category

mineral

Material Type

Carbonate

Sample ID

HS102.1B, HS102.3B, HS102.4B

Collection Locality

Lee, MA

Spectral Purity

1b2_3_4_ # Dolomite HS102.1B # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1b2b3b4b # Dolomite HS102.3B # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns SPECTRAL_PURITY: 1b2_3_4_ # Dolomite HS102.4B # 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

.p> Forms series with Ankerite and with Kutnohorite. "This is a recrystallized dolomitic marble, which displays the carbonate absorption features at longer wavelengths than typical for calcites. Weak absorption band at 1.0µm is due to ferrous iron, which is shown to be present at 0.03 wt.% in the sample." Hunt, G.R., J.W. Salisbury, 1971, Visible and near-infrared spectra of minerals and rocks: II. Carbonates. Modern Geology, v. 2, p. 23-30. Grain size fractions are indicated by the extension after the sample number: .1B = IMAGE_OF_SAMPLE:

XRD Analysis

Dolomite plus trace of calcite XRD done by Norma Vergo Clark, R.N., King, T.V.V., Klejwa, M., Swayze, G.A., and Vergo, N., 1990, High spectral resolution reflectance spectroscopy of minerals: Journal of Geophysical Research, v. 95, no. 8B, p 12,653-12,680.

X Units

cm⁻¹

Y Units

Absorbance

Data Points

1,801