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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Jarosite GDS100 Na,Sy 90C DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: GDS100
MINERAL_TYPE: Sulfate
MINERAL: Jarosite (Natrojarosite) (Synthetic) (Alunite group)
FORMULA: Na(Fe+3)3(SO4)2(OH)6
FORMULA_HTML: NaFe+33(SO4)2(OH)6
COLLECTION_LOCALITY: Synthetic
ORIGINAL_DONOR: Roger Stroffregen, SMU
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Sample synthesized at 90 C
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
40 kV - 30 mA, 7.3-6.5 keV
Reference: JCPDS #30-1203 (natrojorosite)
Found: natrojarosite
Comment: GDS100 is sharp, indicating good crystallinity. GDS is distinctly sharper,
with better resolved peaks. Good correspondence with the JCPDS data. No additional
reflections observed.
J.S. Huebner, J. Pickrell, and T. Schaefer, 1994, written communication.
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE:
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 2446 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 3625 | 0.2-3.0µm | 200 | g.s.= |
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