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: Meionite WS700 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: WS700

MINERAL_TYPE: Tectosilicate

MINERAL: Meionite (Scapolite group)

FORMULA: Na4Al3Si9O24(Cl,OH)/Ca4Al6Si6O24(CO3,SO4)

FORMULA_HTML: Na4Al3Si9O24(Cl,OH)/Ca 4Al6Si6O24(CO3,SO4)

COLLECTION_LOCALITY: Otter Lake, Quebec Canada

ORIGINAL_DONOR: Ward Science Collection

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

Scapolite solid solution series (marialite-wernerite-meionite) end member. Metamorphic mineral with composition suggestive of feldspars.

For samples marked WS700.HL, the HL stands for Heavy Liquid separation

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Scapolite + analcime + other(m) (Norma Vergo)
* analcime causing band in 2.3µ region

END_XRD_ANALYSIS.

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


COMPOSITION
KEYWORD
Oxide
ASCII
Amount Weight
Percent, %
Oxide
html
COMPOSITION: SiO2 52.5600 wt% SiO2
COMPOSITION: TiO2 0.0220 wt% TiO2
COMPOSITION: Al2O3 24.7100 wt% Al2O3
COMPOSITION: FeO 0.0720 wt% FeO
COMPOSITION: MnO 0.0360 wt% MnO
COMPOSITION: MgO 0.0200 wt% MgO
COMPOSITION: CaO 12.5800 wt% CaO
COMPOSITION: Na2O 5.5320 wt% Na2O
COMPOSITION: K2O 0.7760 wt% K2O
COMPOSITION: Cl 1.7520 wt% Cl
COMPOSITION: F 0.0140 wt% F
COMPOSITION: SO3 1.1880 wt% SO3
COMPOSITION: CO2 0.2000 wt% CO2
COMPOSITION: Total 99.4620 wt%
COMPOSITION: O=Cl,F,S 0.4012 wt% #correction for Cl, F, S
COMPOSITION: New Total 99.0608 wt%

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

These values may be suspect because acid dissolution did not remove all CO3.

Average of 5 spots.

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

Not done yet

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 2947 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib05a r 4328 0.2-3.0µm 200 g.s.=


USA.gov logo  Take Pride in America button