TITLE: Chalcedony CU91-6A DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: CU91-6A

MINERAL_TYPE: Tectosilicate

MINERAL: Chalcedony (var. of Quartz)

FORMULA: SiO2

FORMULA_HTML: SiO2

COLLECTION_LOCALITY: Cuprite, Nevada

ORIGINAL_DONOR: Greg Swayze

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

SEM analyses shows crystal morphology indicative of chalcedony. G. Swayze

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Quartz, from Steve Sutley, written communication, 1992

END_XRD_ANALYSIS.

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

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

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 894 0.2-3.0µm 200 g.s.=

LIB_SPECTRA: splib05a r ____ 0.2-3.0µm 200 g.s.=

LIB_SPECTRA: splib06a r ____ 1.5-25µm 250 g.s.=