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(For further information on spectrsocopy, see:
http://speclab.cr.usgs.gov)
TITLE: Mizzonite BM1931,12 Scapolite DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: BM1931,12
MINERAL_TYPE: Tectosilicate
MINERAL: Mizzonite (Scapolite group)
FORMULA: Na4Al3Si9O24(Cl,OH)/Ca4Al6Si6O24(CO3,SO4)
FORMULA_HTML: Na4Al3Si9O24(Cl,O H)/Ca4Al6Si6O24(CO3, SO4)
COLLECTION_LOCALITY: Grenville, Argenteuil County, Quebec, Canada
ORIGINAL_DONOR: British Museum of Natural History
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Scapolites are metamorphic minerals with compositions suggestive of feldspars. There is a complete solid solution series between marialite and meionite.
Sample description, NIR, MID-IR spectra and analysis published in:
Swayze,G.A., and R.N. Clark, 1990, Infrared Spectra and Crystal Chemistry of Sacpolites: Implications for Martian Mineralogy. J. Geophys Res. v. 95, pp. 14481-14495.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Scapolite + muscovite + other(m). (Norma Vergo)
Note that spectrum does not show effect of muscovite. "Other" may be plagioclase. This spectrum closely resembles that of cleaned sample run on a Nicolet FTIR spectrometer. Therefore the features presented here are due to those of the scapolite. G. Swayze.
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 | 44.84 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.0 | wt% | TiO2 |
| COMPOSITION: | Al2O3 | 28.77 | wt% | Al2O3 |
| COMPOSITION: | FeO | 0.01 | wt% | FeO |
| COMPOSITION: | MnO | 0.0 | wt% | MnO |
| COMPOSITION: | MgO | 0.0 | wt% | MgO |
| COMPOSITION: | CaO | 19.74 | wt% | CaO |
| COMPOSITION: | Na2O | 2.57 | wt% | Na2O |
| COMPOSITION: | K2O | 0.33 | wt% | K2O |
| COMPOSITION: | Cl | 0.02 | wt% | Cl |
| COMPOSITION: | F | 0.0 | wt% | F |
| COMPOSITION: | SO3 | 0.9 | wt% | SO3 |
| COMPOSITION: | CO2 | 3.43 | wt% | CO2 |
| COMPOSITION: | Total | 100.64 | wt% | |
| COMPOSITION: | O=Cl,F,S | 0.004 | wt% | #correction for Cl, F, S |
| COMPOSITION: | New Total | 100.636 | wt% |
COMPOSITION_TRACE: Exists but is not included.
COMPOSITION_DISCUSSION:
%Me = 80. End-Member: Mizzonite.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
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 3064 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 4435 | 0.2-3.0µm | 200 | g.s.= |
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