DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: NMNH142137

MINERAL_TYPE: Tectosilicate

MINERAL: Orthoclase (Ferrian) (Feldspar group)

FORMULA: KAlSi3O8

FORMULA_HTML: KAlSi₃O₈

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 celsian. Dimorphous with Microcline. Ferrian orthoclase.

Sieve interval 0 - 74µm.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Contains orthoclase plus small amount of anorthite. No oligoclase seen. (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: 1_2_3_4_

LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment

LIB_SPECTRA: splib04a r 3775 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.=