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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Kaolinite CM9 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: CM9 (also known as API9)
MINERAL_TYPE: Phyllosilicate
MINERAL: Kaolinite (Kaolinite-Serpentine group)
FORMULA: Al2Si2O5(OH)4
FORMULA_HTML: Al2Si2O5(OH)4
COLLECTION_LOCALITY: Mesa Alta, New Mexico
ORIGINAL_DONOR: Clay Mineral Standard from Wards Natural Science Inc.
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Polymorphous with Dickite, Halloysite, and Nacrite.
A spectrum for this sample was published by:
Clark, R.N., King, T.V.V., Klejwa, M., Swayze, G.A., and Vergo, N., 1990, High spectral resolution reflectance spectroscopy of minerals: Journal of Geophysical Research, v. 95, no. 8B, p 12,653-12,680.
who noted that it was spectrally pure.
IMAGE_OF_SAMPLE:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Analysis by Norma Vergo indicates the sample is well ordered kaolinite. The less than 2µm cut is kaolinite + small amount of quartz.
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: XRF # XRF, EM(WDS), ICP(Trace), WChem
| COMPOSITION KEYWORD |
Oxide ASCII |
Amount | Weight Percent, % |
Oxide html |
|---|---|---|---|---|
| COMPOSITION: | SiO2 | 47.1 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.46 | wt% | TiO2 |
| COMPOSITION: | Al2O3 | 37.4 | wt% | Al2O3 |
| COMPOSITION: | Fe2O3 | 0.47 | wt% | Fe2O3 |
| COMPOSITION: | FeO | less than 0.01 | wt% | FeO |
| COMPOSITION: | MnO | less than 0.02 | wt% | MnO |
| COMPOSITION: | MgO | 0.16 | wt% | MgO |
| COMPOSITION: | CaO | 0.05 | wt% | CaO |
| COMPOSITION: | Na2O | less than 0.15 | wt% | Na2O |
| COMPOSITION: | K2O | 0.08 | wt% | K2O |
| COMPOSITION: | P2O5 | less than 0.05 | wt% | P2O5 |
| COMPOSITION: | H2O+ | 13.8 | wt% | H2O+ |
| COMPOSITION: | H2O- | 0.12 | wt% | H2O- |
| COMPOSITION: | H2O | 13.9 | wt% | H2O |
| COMPOSITION: | LOI | 14.1 | wt% | LOI |
| COMPOSITION: | Total | 100.04 | wt% | |
| COMPOSITION: | O=Cl,F,S | wt% | #correction for Cl, F, S | |
| COMPOSITION: | New Total | wt% |
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
XRF Analysis by Branch of Analytical Chemistry, USGS, Denver. Total above includes LOI value rather than H2O values, and does not include value for FeO as it was determined at same time as H2O. Trace analysis was performed and will be added later.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1b2b3b4b # 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 2529 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 3898 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 3911 | 1.3-5.3µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 11962 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 11976 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 12017 | g.s.= |