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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Thuringite SMR-15 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: SMR15
MINERAL_TYPE: Phyllosilicate
MINERAL: Thuringite (Chlorite Group)
FORMULA: (Mg,Fe)3(Si,Al)4O10(OH)2-(Mg,Fe)3(OH)6
FORMULA_HTML: (Mg,Fe)3(Si,Al)4O10(OH)2-(Mg,Fe)3(OH)6
COLLECTION_LOCALITY: Not available
ORIGINAL_DONOR: Gene Whitney, U.S.G.S
CURRENT_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
ULTIMATE_SAMPLE_LOCATION: U.S.G.S. Denver Spectroscopy Laboratory.
SAMPLE_DESCRIPTION:
Sample was ground in an alumina mortar and pestle and wet sieved with methanol into less than 30µm, 30-45µm, 60-104µm, and 104-150µm size fractions.
King, T.V.V. and R.N. Clark, 1989, Spectral Characteristics of Chlorites and Mg-Serpentines Using high-Resolution Reflectance Spectroscopy. Jour. Geophys. Res., 13.997-14,008.
IMAGE_OF_SAMPLE:
NO PHOTO
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Sample is representative of its structural classification. (King and Clark, 1989). END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem
| COMPOSITION KEYWORD |
Oxide ASCII |
Amount | Weight Percent, % |
Oxide html |
|---|---|---|---|---|
| COMPOSITION: | SiO2 | 24.70 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.69 | wt% | TiO2 |
| COMPOSITION: | Al2O3 | 21.10 | wt% | Al2O3 |
| COMPOSITION: | Fe2O3 | 37.50 | wt% | Fe2O3 |
| COMPOSITION: | MnO | 0.72 | wt% | MnO |
| COMPOSITION: | MgO | 16.80 | wt% | MgO |
| COMPOSITION: | CaO | 0.40 | wt% | CaO |
| COMPOSITION: | Na2O | 0.32 | wt% | Na2O |
| COMPOSITION: | K2O | 0.03 | wt% | K2O |
| COMPOSITION: | P2O5 | 0.30 | wt% | P2O5 |
| COMPOSITION: | LOI | 7.50 | wt% | LOI |
| COMPOSITION: | Total | 101.00 | wt% |
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
Compositional data provided by Gene Whitney, USGS, Denver, CO
King, T.V.V. and R.N. Clark, 1989, Spectral Characteristics of
Chlorites and Mg-Serpentines Using high-Resolution Reflectance
Spectroscopy. Jour. Geophys. Res., 13.997-14,008.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
Microscopically this appears to be pure thuringite. All size fractions were examined visually and by energy dispersive methods to ensure chemical homogeneity as a function of grain size interval.
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2b3c4_ # SMR-15.a # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
SPECTRAL_PURITY: 1a2a3a4_ # SMR-15.b # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
SPECTRAL_PURITY: 1a2a3a4_ # SMR-15.c # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
SPECTRAL_PURITY: 1a2a3a4_ # SMR-15.d # 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 4760 | 0.2-3.0µm | 200 | g.s.= 115µm |
| LIB_SPECTRA: | splib04a r 4771 | 0.2-3.0µm | 200 | g.s.= 80µm |
| LIB_SPECTRA: | splib04a r 4782 | 0.2-3.0µm | 200 | g.s.= 32µm |
| LIB_SPECTRA: | splib04a r 4793 | 0.2-3.0µm | 200 | g.s.= 15µm |
| LIB_SPECTRA: | splib05a r 6546 | 0.2-3.0µm | 200 | g.s.= 115µm |
| LIB_SPECTRA: | splib05a r 6559 | 0.2-3.0µm | 200 | g.s.= 80µm |
| LIB_SPECTRA: | splib05a r 6572 | 1.3-5.3µm | 200 | g.s.= 32µm |
| LIB_SPECTRA: | splib05a r 6612 | 0.2-3.0µm | 200 | g.s.= 15µm |
| LIB_SPECTRA: | splib05a r 6625 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 21751 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21765 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21810 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21824 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21865 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21910 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21924 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21969 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 21983 | g.s.= |