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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Actinolite-Tremolit BR93-5A DESCRIPT
DOCUMENTATION_FORMAT: MIXTURE
SAMPLE_ID: BR93-5A
MIXTURE_TYPE: Intimate
MIXTURE: Actinolite, Tremolite, Phlogopite, and Chlorite Hornfels (Rock)
FORMULA: Ca2(Mg,Fe+2)5Si8O22(OH)2, Ca2Mg5Si8O22(OH)2, K(Mg,Fe+2)3AlSi3O10(OH,F)2, and (Mg,Fe)3(Si,Al)4O10(OH)2-(Mg,Fe)3(OH)6
FORMULA_HTML: Ca2(Mg,Fe+2)5Si8O22(OH)2, Ca2Mg5Si8O22(OH)2, K(Mg,Fe+2)3AlSi3O10(OH,F)2, and (Mg,Fe)3(Si,Al)4O10(OH)2-(Mg,Fe)3(OH)6
COLLECTION_LOCALITY: Galway Dry Lake Area, Barstow, California
COLLECTION_LATITUDE: Not Available # degrees and decimal minutes (N or S)
COLLECTION_LONGITUDE: Not Available # degrees and decimal minutes (W or E)
DATUM: Not Available # coordinate datum
ORIGINAL_DONOR: Eric Livo
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
field description: Actinolite-Tremolite bearing Rock
contact skarn
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
Major: Actinolite and Tremolite
Minor: Phlogopite
Trace: Chlorite
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
No additional compositional details available.
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
IMAGE_OF_SAMPLE: Not Available
SPECTROSCOPIC_DISCUSSION:
generic broad Fe2+ one micron band, an OH stretch at 1.4 microns, and strong (Mg,Fe)-OH combination bands at 2.32 and 2.38 microns
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1c2_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: | splib05a r 7133 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 23822 | g.s.= |