A method for generating uniform size-segregated pyrite particle fractions

Table 2 Samples used in this study.

Sample ID	Source	Morphology	Petrogenetic Environment	Mineralogy	Molar S/Fe
HY-001	Wards Natural Science	Euhedral cube	hydrothermal	pyrite	2.01
HY-002	Rock Currier, personal communication	Euhedral cube	hydrothermal	pyrite	2.02
SED-001	Lower Kittanning coal, OH	nodular	sedimentary, within coal	pyrite	2.02
SED-002	Texas	nodular	sedimentary, within coal	pyrite	1.97
SED-003	Calvert Bluff Formation, Texas	spherical nodule	sedimentary, within coal	pyrite with minor quartz	1.97

Composition was determined using x-ray diffraction and molar S:Fe ratio for each sample. All samples had a molar S:Fe ratio of 2:1, indicating insignificant contribution from other species.

ISSN: 1467-4866