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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Jarosite NMNH95074-1 (Na) DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: NMNH95074-1
MINERAL_TYPE: Sulfate
MINERAL: Jarosite (Natrojarosite) (Alunite group)
FORMULA: Na(Fe+3)3(SO4)2(OH)6
FORMULA_HTML: NaFe+33(SO4)2(OH)6
COLLECTION_LOCALITY: Warner Mine, Hot Springs, Mineral County, Nevada
ORIGINAL_DONOR: National Museum of Natural History
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Fe+3 analogue of alunite. Secondary mineral found as crusts and coatings on ferruginous ores.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Natrojarosite (NaFe3(SO4)2(OH)6) + quartz (m).
Spectrally pure. (Norma Vergo)
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
None
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
Not done yet
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
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: | splib04a r 2487 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 3772 | 0.2-3.0µm | 200 | g.s.= |
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