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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: Ammonium_Chloride GDS77 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: GDS77

MINERAL_TYPE: Chloride

MINERAL: Ammonium_Chloride

FORMULA: NH4Cl

FORMULA_HTML: NH4Cl

COLLECTION_LOCALITY: Baker Analyzed Reagent

ORIGINAL_DONOR: Baker Chemical

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, 6.5-9.5 keV
File: amchlr77_mdi
References: PDF2 #07-0007
Found: Salammoniac

Comments: Peaks have sharp tops but are slightly broadened; resolution of the alpha1-alpha2 components is only fair. Search-match confirms the identification as salammoniac (NH4Cl). The sample is primitive cubic with cell edge 3.87 angstroms, the same end member composition. The (110) at 2.73 angstroms has an unexplained, but very weak, shoulder extending to 2.83 angstroms.

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 281 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib05a r 913 0.2-3.0µm 200 g.s.=


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