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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Meionite WS700 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: WS700
MINERAL_TYPE: Tectosilicate
MINERAL: Meionite (Scapolite group)
FORMULA: Na4Al3Si9O24(Cl,OH)/Ca4Al6Si6O24(CO3,SO4)
FORMULA_HTML: Na4Al3Si9O24(Cl,OH)/Ca 4Al6Si6O24(CO3,SO4)
COLLECTION_LOCALITY: Otter Lake, Quebec Canada
ORIGINAL_DONOR: Ward Science Collection
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Scapolite solid solution series (marialite-wernerite-meionite) end member. Metamorphic mineral with composition suggestive of feldspars.
For samples marked WS700.HL, the HL stands for Heavy Liquid separation
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Scapolite + analcime + other(m) (Norma Vergo)
* analcime causing band in 2.3µ region
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM # XRF, EM(WDS), ICP(Trace), WChem
| COMPOSITION KEYWORD |
Oxide ASCII |
Amount | Weight Percent, % |
Oxide html |
|---|---|---|---|---|
| COMPOSITION: | SiO2 | 52.5600 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.0220 | wt% | TiO2 |
| COMPOSITION: | Al2O3 | 24.7100 | wt% | Al2O3 |
| COMPOSITION: | FeO | 0.0720 | wt% | FeO |
| COMPOSITION: | MnO | 0.0360 | wt% | MnO |
| COMPOSITION: | MgO | 0.0200 | wt% | MgO |
| COMPOSITION: | CaO | 12.5800 | wt% | CaO |
| COMPOSITION: | Na2O | 5.5320 | wt% | Na2O |
| COMPOSITION: | K2O | 0.7760 | wt% | K2O |
| COMPOSITION: | Cl | 1.7520 | wt% | Cl |
| COMPOSITION: | F | 0.0140 | wt% | F |
| COMPOSITION: | SO3 | 1.1880 | wt% | SO3 |
| COMPOSITION: | CO2 | 0.2000 | wt% | CO2 |
| COMPOSITION: | Total | 99.4620 | wt% | |
| COMPOSITION: | O=Cl,F,S | 0.4012 | wt% | #correction for Cl, F, S |
| COMPOSITION: | New Total | 99.0608 | wt% |
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
These values may be suspect because acid dissolution did not remove all CO3.
Average of 5 spots.
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 2947 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 4328 | 0.2-3.0µm | 200 | g.s.= |
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