DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: GDS101

MINERAL_TYPE: Sulfate

MINERAL: Jarosite (Natrojarosite) (Synthetic) (Alunite group)

FORMULA: Na(Fe+3)3(SO4)2(OH)6

FORMULA_HTML: NaFe⁺³₃(SO₄)₂(OH)₆

COLLECTION_LOCALITY: Synthetic

ORIGINAL_DONOR: Roger Stroffregen, SMU

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

Sample synthesized at 200C

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

40 kV - 30 mA, 7.3-6.5 keV
Reference: JCPDS #30-1203 (natrojorosite)
Found: natrojarosite

Comment: GDS100 is sharp, indicating good crystallinite. GDS is distinctly sharper, with better resolved peaks. Good correspondence with the JCPDS data. No additional reflections observed.

J.S. Huebner, J. Pickrell, and J. Randow, 1993, written communication.

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem

COMPOSITION_TRACE:

COMPOSITION_DISCUSSION:

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 2456 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.=