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: Pyrite S26-8 DESCRIPT

DOCUMENTATION_FORMAT: MINERAL

SAMPLE_ID: S26-8

MINERAL_TYPE: Sulfide

MINERAL: Pyrite (Pyrite group)

FORMULA: FeS2

FORMULA_HTML: FeS₂

COLLECTION_LOCALITY: Ellenville (Ulster) Mine, Ellenville, Ulster County, NY

ORIGINAL_DONOR: Jules Friedman Field Sample

CURRENT_SAMPLE_LOCATION: USGS Reston, VA

ULTIMATE_SAMPLE_LOCATION: USGS Reston, VA

SAMPLE_DESCRIPTION:

Forms series with Cattierite (CoS₂). Dimorphous with Marcasite.

Field sample from a study done on the Shawangunk Region of New York.

For specific sample information refer to the following reference: Friedman, Jules D., Mutschler, Felix E., Zartman, Robert E., Briggs, Paul H., Swayze, Gregg A., Theisen, Arnold F., 1989, Shawangunk Ore District, New York: Geochemical and Spectral Data, U.S. Geological Survey Open File Report 89-193.

IMAGE_OF_SAMPLE:
NO PHOTO

END_SAMPLE_DESCRIPTION.

XRD_ANALYSIS:

Not Available

END_XRD_ANALYSIS.

COMPOSITIONAL_ANALYSIS_TYPE: ICP # XRF, EPMA, ICP(Trace), WChem

COMPOSITION
KEYWORD Element
ASCII Amount Units

COMPOSITION_TRACE: Ag less than 2.5 ppm

COMPOSITION_TRACE: As 650 ppm

COMPOSITION_TRACE: Au 0.220 ppm

COMPOSITION_TRACE: Cd 10 ppm

COMPOSITION_TRACE: Cr 250 ppm

COMPOSITION_TRACE: Cu 30 ppm

COMPOSITION_TRACE: Hg 0.035 ppm

COMPOSITION_TRACE: Mn 35 ppm

COMPOSITION_TRACE: Ni 50 ppm

COMPOSITION_TRACE: Pb 40 ppm

COMPOSITION_TRACE: Sb less than 25 ppm

COMPOSITION_TRACE: Se less than 25 ppm

COMPOSITION_TRACE: Te 0.11 ppm

COMPOSITION_TRACE: Tl less than 0.2 ppm

COMPOSITION_TRACE: V 20 ppm

COMPOSITION_TRACE: Zn 20 ppm

COMPOSITION KEYWORD	Element ASCII	Amount	Units
COMPOSITION_TRACE:	Ag	less than 2.5	ppm
COMPOSITION_TRACE:	As	650	ppm
COMPOSITION_TRACE:	Au	0.220	ppm
COMPOSITION_TRACE:	Cd	10	ppm
COMPOSITION_TRACE:	Cr	250	ppm
COMPOSITION_TRACE:	Cu	30	ppm
COMPOSITION_TRACE:	Hg	0.035	ppm
COMPOSITION_TRACE:	Mn	35	ppm
COMPOSITION_TRACE:	Ni	50	ppm
COMPOSITION_TRACE:	Pb	40	ppm
COMPOSITION_TRACE:	Sb	less than 25	ppm
COMPOSITION_TRACE:	Se	less than 25	ppm
COMPOSITION_TRACE:	Te	0.11	ppm
COMPOSITION_TRACE:	Tl	less than 0.2	ppm
COMPOSITION_TRACE:	V	20	ppm
COMPOSITION_TRACE:	Zn	20	ppm

COMPOSITION_DISCUSSION:

Mode wt%
Gal
Sph
Cpy
Py 95.0
Qtz 5.0

Assay wt%
Cu <0.01
Fe 43.43
Pb <0.01
Zn <0.01
S 44.8

Friedman, Jules D., Mutschler, Felix E., Zartman, Robert E., Briggs, Paul H., Swayze, Gregg A., Theisen, Arnold F., 1989, Shawangunk Ore District, New York: Geochemical and Spectral Data, U.S. Geological Survey Open File Report 89-193.

END_COMPOSITION_DISCUSSION.

MICROSCOPIC_EXAMINATION:

END_MICROSCOPIC_EXAMINATION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1c2_3_4_ # S26-8 # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns