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
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TITLE: Kaol.5+MuscCU91-250A AMX13 DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: AMX13

MIXTURE_TYPE: Areal

MIXTURE: Kaolinite, Muscovite

FORMULA: Al2Si2O5(OH)4 and KAl2Si3O10(OH)2

FORMULA_HTML: Al₂Si₂O₅(OH)₄ AND KAl₂Si₃O₁₀(OH)₂

COLLECTION_LOCALITY: (Washington County, Georgia), (Cuprite, Nevada)

ORIGINAL_DONOR: (Clay Mineral Society), (G.Swayze)

COLLECTION_LATITUDE: Musc N37deg 31.767' # degrees and decimal minutes (N or S)

COLLECTION_LONGITUDE: Musc W117deg 13.517' #degrees and decimal minutes (W or E)

DATUM: Musc NAD27 # coordinate datum

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

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

SAMPLE_DESCRIPTION:

Calculated areal (linear) mixture of 50% Clay Mineral Society standard well crystalized kaolinite + 50% Muscovite Phyllite CU91-250A

See KGa-1 in minerals, CU91-250A in mixtures.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

See KGa-1, CU91-250A.

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: none # XRF, EPMA, ICP(Trace), WChem

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

See KGa-1, CU91-250A.

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

See KGa-1

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

See KGa-1, CU91-250A. Areal mixture spectrum resembles that of halloysite with a narrow muscovite band superimposed on a broader kaolinite band at 2.2 microns.

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1b2b3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns