Sample Description USGS Spectral Library Version 7

USGS Spectral Library Version 7 Sample Description

Kokaly, R.F., Clark, R.N., Swayze, G.A., Livo, K.E., Hoefen, T.M., Pearson, N.C., Wise, R.A., Benzel, W.M., Lowers, H.A., Driscoll, R.L., and Klein, A.J., 2017, USGS Spectral Library Version 7: U.S. Geological Survey Data Series 1035, 61 p., https://doi.org/10.3133/ds1035
_{For more information on the library, see:
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TITLE: Calcite.8+Ca-Montmor.2 AMX15 DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: AMX15

MIXTURE_TYPE: Areal

MIXTURE: Montmorillonite, Calcite

FORMULA: (Ca)0.33(Al,Mg)2[(SiAl)4O10(OH)2]*nH2O + CaCO3

FORMULA_HTML: (Ca)_0.33(Al,Mg)₂Si₄O₁₀(OH)₂•nH₂O + CaCO₃

COLLECTION_LOCALITY: (Apache County, Arizona), (Tunguska, Siberia, USSR).

ORIGINAL_DONOR: (Clay Mineral Society), (Wards Scientific).

CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver spectroscopy Laboratory

SAMPLE_DESCRIPTION:

80% Calcite + 20% Montmorillonite

See SAz-1, WS272

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

See SAz-1, WS272

END_XRD_ANALYSIS.

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

See SAz-1, WS272

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

See SAz-1, WS272

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

See SAz-1, WS272

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

See SAz-1, WS272

END_SPECTROSCOPIC_DISCUSSION.

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