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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: Phlogopite_Sand_Mix BR93-20 DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: BR93-20

MIXTURE_TYPE: Intimate

MIXTURE: Phlogopite (mica group) bearing sandy soil

FORMULA: K(Mg,Fe+2)3AlSi3O10(OH,F)2

FORMULA_HTML: K(Mg,Fe+2)3AlSi3O10(OH,F)2

COLLECTION_LOCALITY: Red Hill area, Barstow California, USA

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

ORIGINAL_DONOR: Eric Livo

CURRENT_SAMPLE_LOCATION: USGS Spectral Library Denver, Colorado

ULTIMATE_SAMPLE_LOCATION: USGS Spectral Library Denver, Colorado

SAMPLE_DESCRIPTION:

Phlogopite (altered biotite) -rich sandy alluvial-fan soil

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Major component: phlogopite
Minor components: albite, microcline, and chlorite-clinochlorite
Trace components: actinolite, magnesiohornblende
XRD analysis by: Steve Sutley

END_XRD_ANALYSIS.

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

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

No additional compositional details available.

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

IMAGE_OF_SAMPLE: Not Available

SPECTROSCOPIC_DISCUSSION:

generic - very broad Fe2+ one micron absorption band. The spectral feature at 2.32 microns contains a sharp phlogopite band center with broad chlorite wings on either side.

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 8893 0.2-3.0µm 200 g.s.=


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