U.S. Geological Survey home page


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: Hedenbergite NMNH119197 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: NMNH119197

MINERAL_TYPE: Inosilicate

MINERAL: Hedenbergite (Pyroxene group)

FORMULA: CaFe+2Si2O6

FORMULA_HTML: CaFe+2Si2O6

COLLECTION_LOCALITY: unknown

ORIGINAL_DONOR: National Museum of Natural History

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

Forms series with Diopside and with Joahnnsenite.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Pure hedenbergite. Do not see orthopyroxene. exsolution. Norma Vergo

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem

COMPOSITION_TRACE:

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_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 1995 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib05a r 3147 0.2-3.0µm 200 g.s.=


USA.gov logo  Take Pride in America button