Clark and others 2007 USGS Data Series 231
Spectral Library splib06a Sample Description

(For further information on spectroscopy, see: http://speclab.cr.usgs.gov)

TITLE: Calcite.8+Ca-Montmor.2 AMX15 DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: AMX15

MIXTURE_TYPE: Areal

MIXTURE: Montmorillonite, Calcite

FORMULA: (Ca)0.33(Al,Mg)2[(SiAl)4O10(OH)2]*nH2O + CaCO3

FORMULA_HTML: (Ca)_0.33(Al,Mg)₂Si₄O₁₀(OH)₂•nH₂O + CaCO₃

COLLECTION_LOCALITY: (Apache County, Arizona), (Tunguska, Siberia, USSR).

ORIGINAL_DONOR: (Clay Mineral Society), (Wards Scientific).

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

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

SAMPLE_DESCRIPTION:

Montmorillonite 20% + Calcite 80%

See SAz-1, WS272

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

See SAz-1, WS272

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem

See SAz-1, WS272

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

See SAz-1, WS272

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

See SAz-1, WS272

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

See SAz-1, WS272

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 7725	0.2-3.0µm	200	g.s.=
LIB_SPECTRA:	splib06a r 24629			g.s.=