Sample Description USGS Spectral Library Version 7

USGS Spectral Library Version 7 Sample Description

Kokaly, R.F., Clark, R.N., Swayze, G.A., Livo, K.E., Hoefen, T.M., Pearson, N.C., Wise, R.A., Benzel, W.M., Lowers, H.A., Driscoll, R.L., and Klein, A.J., 2017, USGS Spectral Library Version 7: U.S. Geological Survey Data Series 1035, 61 p., https://doi.org/10.3133/ds1035
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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.

IMAGE_OF_SAMPLE:

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

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

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: EM # XRF, EPMA, 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 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:

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

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

Heavy liquid separation removed laumontite.

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1b2c3b4u # NMNH126018-2 # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns