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: Gyp.3+jr.1+msc.4+dickite.2 AMX22 DESCRIPT

DOCUMENTATION_FORMAT: MIXTURE

SAMPLE_ID: AMX22

MIXTURE_TYPE: Areal

MIXTURE: Gypsum, Jarosite, Muscovite, Dickite.

FORMULA: CaSO4*2H2O + K(Fe+3)3(SO4)2(OH)6 + KAl2Si3O10(OH)2 + Al2Si2O5(OH)4

FORMULA_HTML: CaSO₄•2H₂0 + KFe⁺³₃(SO₄)₂(OH)₆
+ KAl₂Si₃O₁₀(OH)₂ + Al₂Si₂O₅(OH)₄

COLLECTION_LOCALITY: (Washington County, Utah), (Synthetic), (somewhere in Brazil), (Red Mt. Colorado).

ORIGINAL_DONOR: (Hunt & Salisbury Collection), (Roger Stroffregen, SMU), (C.V. Clemency, SUNY), (National Museum of Natural History).

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

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

SAMPLE_DESCRIPTION:

Areal mix of 30% gypsum (HS333), 0% K jarosite (GDS99), and 40% medium-high Al muscovite (GDS113), and 20% dickite (NMNH106242).

See: Gypsum (HS333.3B), K Jarosite (GDS99), Medium-high Al Muscovite (GDS113), Dickite (NMNH106242).

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

See: Gypsum (HS333.3B), K Jarosite (GDS99), Medium-high Al Muscovite (GDS113), Dickite (NMNH106242).

END_XRD_ANALYSIS.

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

See: Gypsum (HS333.3B), K Jarosite (GDS99), Medium-high Al Muscovite (GDS113), Dickite (NMNH106242).

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

See: Gypsum (HS333.3B), K Jarosite (GDS99), Medium-high Al Muscovite (GDS113), Dickite (NMNH106242).

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

See: Gypsum (HS333.3B), K Jarosite (GDS99), Medium-high Al Muscovite (GDS113), Dickite (NMNH106242).

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

See: Gypsum (HS333.3B), K Jarosite (GDS99), Medium-high Al Muscovite (GDS113), Dickite (NMNH106242).

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 8224	0.2-3.0µm	200	g.s.=
LIB_SPECTRA:	splib06a r 25258			g.s.=