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: Calc.25+dolo.25+mont.5 AMX18 DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: AMX18

MIXTURE_TYPE: Areal

MIXTURE: Calcite, Dolomite, Montmorillonite.

FORMULA: CaCO3 + CaMg(CO3)2 +(Na)0.33(Al,Mg)2[(SiAl)4O10(OH)2]·nH2O

FORMULA_HTML: CaCO₃ + CaMg(CO₃)₂ +
(Na_0.5)_0.33(Al,Mg)₂[(SiAl)₄O₁₀(OH)₂•nH₂O +

COLLECTION_LOCALITY: (Tunguska, Siberia, USSR), (Lee, Massachusetts), (Crook, Wyoming).

ORIGINAL_DONOR: (Wards Scientific), (Hunt & Salisbury Collection), (Clay Mineral Society).

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

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

SAMPLE_DESCRIPTION:

Calcite25% dolomite25% mont 50% ...(Ca mont)

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

See: Calcite (WS272), Dolomite (HS102.3B), Montmorillonite (SWy-1).

END_XRD_ANALYSIS.

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

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

See WS272, HS102.3B, SWy-1.

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

See WS272, HS102.3B, SWy-1.

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

See WS272, HS102.3B, SWy-1.

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1b2_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 7576	0.2-3.0µm	200	g.s.=

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