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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
For more information on the library, see: local link web link

TITLE: Zircon WS522 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: WS522

MINERAL_TYPE: Nesosilicate

MINERAL: Zircon

FORMULA: ZrSiO4

FORMULA_HTML: ZrSiO4

COLLECTION_LOCALITY: Gurpui, Goias, Brazil

ORIGINAL_DONOR: Ward Scientific

CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory

SAMPLE_DESCRIPTION:

less than 250 µ grain size.

IMAGE_OF_SAMPLE:
Photo of sample

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

40 kV - 30 mA, 6.5-9.5 keV
File: zircn522.out, -.mdi
Reference: Borg and Smith (1969).
Found: zircon, trace quartz?

Comment: Zircon very well crystallized. An very weak but distinct reflection that is not indexable as zircon lies in the position of the strong quartz (100). The strongest quartz reflection (101) lies at the position of the strong zircon (200) and thus could not be seen, if present.

J.S. Huebner, J. Pickrell, T. Schaefer, written communication 1994

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EPMA, ICP(Trace), WChem

COMPOSITION_TRACE:

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_3_4_ # WS522 # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns