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Clark et. al. 2003 USGS Open File Report 03-395
Spectral Library splib05a Sample Description

(For further information on spectrsocopy, see: http://speclab.cr.usgs.gov)

TITLE: Kaol+Musc_intimate CU93-5C DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: CU93-5C

MIXTURE_TYPE: Intimate

MIXTURE: Kaolinite and Muscovite

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

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

COLLECTION_LOCALITY: Cuprite, Nevada, USA

ORIGINAL_DONOR: Gregg Swayze

COLLECTION_LATITUDE: Not Available # degrees and decimal minutes (N or S)

COLLECTION_LONGITUDE: Not Available # degrees and decimal minutes (W or E)

DATUM: Not Available # coordinate datum

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

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

SAMPLE_DESCRIPTION:

Kaolinite + Muscovite alteration of what was originally Lower Cambrian Harkless Phyllite west of Hwy 95 in the western hydrothermal alteration center.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

none

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: NONE # XRF, EM(WDS), ICP(Trace),WChem

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

none

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

none

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

The spectrum somewhat resembles that of halloysite in the 2.2 micron region where a strong muscovite band is superimposed on a broader kaolinite band. All combinations of kaolinite + muscovite have been observed at Cuprite at the margins of the alteration centers.

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment
LIB_SPECTRA: splib05a r 8415 0.2-3.0µm 200 g.s.=


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