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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Saponite SapCa-1 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: Ca-1
MINERAL_TYPE: Phyllosilicate
MINERAL: Saponite (Montmorillonite group)
FORMULA: (1/2Ca,Na)0.33(Mg,Fe+2)3(Si,Al)4O10(OH)2*4H2O
FORMULA_HTML: (½Ca,Na)0.33(Mg,Fe+2)3(Si,Al)4O10(OH)2•4H2O
COLLECTION_LOCALITY: Ballarat, California
ORIGINAL_DONOR: Hunt and Salisbury Collection
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Salisbury, J. W., Walter, L. W., and Vergo, N., 1987, Mid-Infrared (2.1-25µm) Spectra of Minerals: First Edition, U.S. Geological Survey Open File Report 87-263.
IMAGE_OF_SAMPLE:
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Less than 2µ size fraction is saponite with a trace of unknown material with x-ray peaks at 8.6, 3.26 and 3.14 Angstroms. Coarser fraction contains quartz.
Salisbury, J. W., Walter, L. W., and Vergo, N., 1987, Mid-Infrared (2.1-25µm) Spectra of Minerals: First Edition, U.S. Geological Survey Open File Report 87-263.
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: XRF # XRF, EM(WDS), ICP(Trace), WChem
| COMPOSITION KEYWORD |
Oxide ASCII |
Amount | Weight Percent, % |
Oxide html |
|---|---|---|---|---|
| COMPOSITION: | SiO2 | 51.9 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.54 | wt% | TiO2 |
| COMPOSITION: | Al2O3 | 3.66 | wt% | Al2O3 |
| COMPOSITION: | Fe2O3 | 0.88 | wt% | Fe2O3 |
| COMPOSITION: | MnO | less than 0.02 | wt% | MnO |
| COMPOSITION: | MgO | 0.88 | wt% | MgO |
| COMPOSITION: | CaO | 4.68 | wt% | CaO |
| COMPOSITION: | Na2O | 1.94 | wt% | Na2O |
| COMPOSITION: | K2O | 0.41 | wt% | K2O |
| COMPOSITION: | LOI | 11.5 | wt% | LOI |
| COMPOSITION: | Total | wt% |
COMPOSITION_TRACE:
COMPOSITION_DISCUSSION:
Analysis done by USGS OMR Branch of Analytical Chemistry, Lakewood, Colorado: J. Taggart, Ardith J. Bartel, K. Stewart
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 4339 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib04a r 4350 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 6077 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib05a r 6090 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 19977 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 19990 | g.s.= | ||
| LIB_SPECTRA: | splib06a r 20002 | g.s.= |