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: Marialite NMNH126018-2 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: NMNH126018-2

MINERAL_TYPE: Tectosilicate

MINERAL: Marialite (Scapolite group)

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

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

COLLECTION_LOCALITY: Goodenham, Haliburton Co., Ontario, Canada

ORIGINAL_DONOR: National Museum of Natural History

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

Scapolites are metamorphic minerals with compositions similar to feldspars. Marialite is an end member of the solid solution series marialite-meionite.

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Scapolite + laumontite + other(s). (Norma Vergo)

END_XRD_ANALYSIS.

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


COMPOSITION
KEYWORD
Oxide
ASCII
Amount Weight
Percent, %
Oxide
html
COMPOSITION: SiO2 59.8800 wt% SiO2
COMPOSITION: TiO2 0.0010 wt% TiO2
COMPOSITION: Al2O3 20.5900 wt% Al2O3
COMPOSITION: FeO 0.0040 wt% FeO
COMPOSITION: MnO 0.0090 wt% MnO
COMPOSITION: CaO 3.8780 wt% CaO
COMPOSITION: Na2O 10.8700 wt% Na2O
COMPOSITION: K2O 1.3210 wt% K2O
COMPOSITION: Cl 3.5390 wt% Cl
COMPOSITION: F 0.0480 wt% F
COMPOSITION: CO2 1.2200 wt% CO2
COMPOSITION: Total 101.362 wt%
COMPOSITION: O=Cl,F,S 0.819 wt% #correction for Cl, F, S
COMPOSITION: New Total 100.55 wt%

COMPOSITION_TRACE: None

COMPOSITION_DISCUSSION:

XMe = Ca/(Ca+Na) = 16 Me

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

Heavy liquid separation removed laumonite.

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 2916 0.2-3.0µm 200 g.s.=
LIB_SPECTRA: splib05a r 4291 0.2-3.0µm 200 g.s.=


USA.gov logo  Take Pride in America button