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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Erionite+Merlinoite GDS144 DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: GDS144
MIXTURE_TYPE: Intimate
MIXTURE: Erionite and Merlinoite (Zeolite group)
FORMULA: (K2Na2Ca,Mg)2[Al4Si14O36]·15H2O and (K,Na)5(Ca,Ba)2[(Al9Si23)O64]·22H2O
FORMULA_HTML: (K2Na2Ca,Mg)2[Al4Si14O36]·15H2O and
COLLECTION_LOCALITY: Eureka Co., Nevada?
ORIGINAL_DONOR: Jim Crowley
CURRENT_SAMPLE_LOCATION: USGS Reston, Virginia
ULTIMATE_SAMPLE_LOCATION: USGS Reston, Virginia
SAMPLE_DESCRIPTION:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Erionite with Merlinoite as a major contaminant.
Jim Crowley, 1993, personal communication.
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
None
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
There is significant interference from goethite to weak features in the 1-micron region. Thus the spectral purity rating is a c, but rates an a in the 1.7 to 3 micron region.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1c2b3b4_ # 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: | splib04a r 1606 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 8117 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 25066 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 25076 | g.s.= |