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: 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., California

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: 1c2_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:	splib04a r 1606	0.2-3.0µm	200	g.s.=
LIB_SPECTRA:	splib05a r 8117	0.2-3.0µm	200	g.s.=

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