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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: Ammonio-jarosite SCR-NHJ DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: SCR-NHJ

MINERAL_TYPE: Sulfate

MINERAL: Ammoniojarosite (Alunite group)

FORMULA: (NH4)(Fe+3)3(SO4)2(OH)6

FORMULA_HTML: (NH4)Fe+33(SO4)2(OH)6

COLLECTION_LOCALITY: Unavailable

ORIGINAL_DONOR: Charlie Alpers, USGS

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

40 kV - 30 mA, 7.3-9.5 keV
File: amjarscf.out, -.mdi
References: JCPDS 26-1014; Huebner's reference patterns
Found : ammoniojarisite

Comment: strong pattern, sharp peaks, very well crystallized, excellent match to the JCPDS pattern. A very weak, probably significant reflection at 2.356A does not appear on the JCPDS card.

J.S. Huebner, J. Pickrell, T. Schaefer, written communication 1994

END_XRD_ANALYSIS.

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

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

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: splib04a r 291 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib05a r 852 1.3-5.3µm 200 g.s.=
LIB_SPECTRA: splib05a r 890 0.2-3.0µm 200 g.s.=


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