TITLE: Phlogopite WS675 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: WS675

MINERAL_TYPE: Phyllosilicate

MINERAL: Phlogopite (Mica group)

FORMULA: KMg3Si3AlO10(F,OH)2

FORMULA_HTML: KMg3Si3AlO10(F,OH)2

COLLECTION_LOCALITY: Bancroft, Ontario, Cananda

ORIGINAL_DONOR: Ward Science Collection

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

Forms series with Biotite.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

40 kV - 30 mA, 7.0-9.5 keV
File: plogo675.out, -.mdi (edge = random mount)
References: Huebner's reference patterns, particularly of a phlogopite crystal from Burgess, Ontario; SWBailey (1988, MSA Reviews 13)

Comment: Only moderately well crystallized (compare with WS-496). Position of the (3T 30-30) or (1M 060) reflection at 1.535 angstroms consistent with phlogopite (Mg=100). Three unindexed reflections at 1.64, 1.61. and 1.58 angstroms also appear in the reference pattern and in WS-496.

J.S. Huebner, J. Pickrell, T. Schaefer, written communication(USGS)

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 3895 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.=