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(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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