DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: Chlorite SMR-13
MINERAL_TYPE: Phyllosilicate
MINERAL: Chlorite Mg-rich (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: unknown
ORIGINAL_DONOR: Gene Whitney, USGS Denver
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION:
SAMPLE_DESCRIPTION:
Sample was ground in an alumina mortar and pestle and wet sieved with methanol into <30µm (e), 30-45µm (d), 45-60µm (c), 60-104µm (b), and 104-150µm (a) size fractions. (Letter denotes spectrum designation)
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. .nf
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Sample was analyzed and found to be a Mg-rich chlorite. (King and Clark, 1989)
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: EM(WDS) # XRF, EM(WDS), ICP(Trace), WChem
| COMPOSITION: | SiO2 | 31.00 | wt% | SiO2 |
| COMPOSITION: | TiO2 | 0.08 | wt% | TiO2 |
| COMPOSITION: | Al2O3 | 17.30 | wt% | Al2O3 |
| COMPOSITION: | Fe2O3 | 8.34 | wt% | Fe2O3 |
| COMPOSITION: | MnO | 0.12 | wt% | MnO |
| COMPOSITION: | MgO | 30.20 | wt% | MgO |
| COMPOSITION: | CaO | 0.02 | wt% | CaO |
| COMPOSITION: | Na2O | 0.23 | wt% | Na2O |
| COMPOSITION: | K2O | <0.02 | wt% | K2O |
| COMPOSITION: | P2O5 | <0.05 | wt% | P2O5 |
| COMPOSITION: | LOI | 12.30 | wt% | LOI |
| COMPOSITION: | Total | 99.66 | wt% | |
| COMPOSITION: | O=Cl,F,S | wt% | #correction for Cl, F, S | |
| COMPOSITION: | New Total | wt% |
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
Compositional data provided by Gene Whitney. 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 a pure chlorite sample. All size fractions were examined visually and by energy dispersive methods to insure chemical homogenity as a function of grain size interval. Plates about 10 µm thick. G.Swayze.
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1_2_3_4_
LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment
LIB_SPECTRA: splib04a r 961 0.2-2.7µm 200 g.s.=115µm
LIB_SPECTRA: splib04a r 973 0.2-2.7µm 200 g.s.=70µm
LIB_SPECTRA: splib04a r 985 0.2-2.7µm 200 g.s.=49µm
LIB_SPECTRA: splib04a r 997 0.2-2.7µm 200 g.s.=33µm
LIB_SPECTRA: splib04a r 1007 0.2-2.7µm 200 g.s.=15µm
LIB_SPECTRA: splib05a r ____ 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib06a r ____ 1.5-25µm 250 g.s.=