DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: NMNH83380

MINERAL_TYPE: Tectosilicate

MINERAL: Natrolite (Zeolite group)

FORMULA: Na2Al2Si3O10*2H2O

FORMULA_HTML: Na₂Al₂Si₃O₁₀•2H₂O

COLLECTION_LOCALITY: Nova Scotia, Canada

ORIGINAL_DONOR: Smithsonian

CURRENT_SAMPLE_LOCATION: USGS Reston, Virginia

ULTIMATE_SAMPLE_LOCATION: USGS Reston, Virginia

SAMPLE_DESCRIPTION:

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

40 kV - 30 mA, 6.5-9.5 keV
File: natrolit.out, -.mdi
References: JCPDS #41-1355, Borg and Smith (1969) for natrolite
Found: Scolecite >= natrolite; very weak reflections at 7.2, 3.55 angstroms

Comment: Natrolite and scolecite are well crystallized. Extra reflections could be a trace of sheet silicate with a basal spacing of 7 or 14 angstroms.

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: None

COMPOSITION_DISCUSSION:

None

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 3428 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.=