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Clark et. al. 2003 USGS Open File Report 03-395
Spectral Library splib05a Sample Description

(For further information on spectrsocopy, 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.=


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