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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Dolomite COD2005 DESCRIPT
DOCUMENTATION_FORMAT: MINERAL
SAMPLE_ID: COD2005
MINERAL_TYPE: Carbonate
MINERAL: Dolomite (Dolomite group)
FORMULA: CaMg(CO3)2
FORMULA_HTML: CaMg(CO3)2
COLLECTION_LOCALITY: Grapevine Mountains, Nevada
ORIGINAL_DONOR: Fred Kruse
CURRENT_SAMPLE_LOCATION: CSES/CIRES, Univ. of CO, Boulder
ULTIMATE_SAMPLE_LOCATION: CSES/CIRES, Univ. of CO, Boulder
SAMPLE_DESCRIPTION:
Forms series with Ankerite and with Kutnohorite.
IMAGE_OF_SAMPLE:
NO PHOTO
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Dolomite + trace calcite.
Kruse, F.A., and P.L. Hauff, eds., 1992, The IGCP-264 Spectral Properties Database. IUGS/UNESCO, Special Publication, 211 p., (in press).
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
Bimodal Grain Size distribution:
mode 1: 87 µm @ 75 vol%
mode 2: 8 µm @ 25 vol%
average gr sz = 75 µm
High order white interference color, uniaxial (-). Sample looks pure. G. Swayze.
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 1472 | 0.2-3.0µm | 200 | g.s.= 75 µm |
| LIB_SPECTRA: | splib05a r 2452 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 7104 | g.s.= |