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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: Phlogopite GDS20 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: GDS20 (NMNH124158)

MINERAL_TYPE: Phyllosilicate

MINERAL: Phlogopite (Mica group)

FORMULA: KMg3Si3AlO10(F,OH)2

FORMULA_HTML: KMg3Si3AlO10(F,OH)2

COLLECTION_LOCALITY: Burgess, Ontario (Cp sample)

ORIGINAL_DONOR: Bruce Hemingway

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

Form series with Biotite.

Sieve interval: coarse

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

"Unit cell parameters are: a = 0.531+/-0.002 nm, b = 0.922+/-0.003 nm, c = 1.022+/-0.003 nm, and beta = 100.00+/-0.03°, and the structure type is 1M (M.R. Ross, U.S. Geol. Survey, personal communication, 1982) determined by single crystal methods."

Robie, R.A. and Hemingway, B.S., 1984, Heat capacities and entropies of phlogopite (KMg3[AlSi3O10](OH)2) and paragonite (NaAl2[AlSi3O10](OH)2) between 5 and 900 K and estimates of the enthalpies and Gibbs free energies of formation. American Mineralogist, v. 69, pp.858-868.

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: # XRF, EM(WDS), ICP(Trace), WChem


COMPOSITION
KEYWORD
Oxide
ASCII
Amount Weight
Percent, %
Oxide
html
COMPOSITION: SiO2 40.3 wt% SiO2
COMPOSITION: TiO2 1.32 wt% TiO2
COMPOSITION: Al2O3 14.3 wt% Al2O3
COMPOSITION: Fe2O3 .63 wt% Fe2O3
COMPOSITION: FeO 1.11 wt% FeO
COMPOSITION: MnO .03 wt% MnO
COMPOSITION: MgO 26.4 wt% MgO
COMPOSITION: BaO .16 wt% BaO
COMPOSITION: CaO lt.07 wt% CaO
COMPOSITION: Na2O .43 wt% Na2O
COMPOSITION: K2O 10.1 wt% K2O
COMPOSITION: F 3.2 wt% F
COMPOSITION: H2O+ 2.63 wt% H2O+
COMPOSITION: H2O- .91 wt% H2O-
COMPOSITION: Total 101.59 wt%
COMPOSITION: O=Cl,F,S 1.34 wt% #correction for Cl, F, S
COMPOSITION: New Total 100.25 wt%

Rapid rock analysis from:

Robie, R.A. and Hemingway, B.S., 1984, Heat capacities and entropies of phlogopite (KMg3[AlSi3O10](OH)2) and paragonite (NaAl2[AlSi3O10](OH)2) between 5 and 900 K and estimates of the enthalpies and Gibbs free energies of formation. American Mineralogist, v. 69, pp.858-868.

COMPOSITION_TRACE:

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1b2_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 3862 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib05a r 5388 0.2-3.0µm 200 g.s.=


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