Sulfur

Electron Backscatter Diffraction (EBSD)

EDAX Periodic Table of Elements - Sulfur

Combining EDS & EBSD together enabled the identification of this mineral as Chalcopyrite CuFeS2.

 

IQ

EDAX Periodic Table of Elements - Sulfur

EDAX Periodic Table of Elements - Sulfur

S EDS

EDAX Periodic Table of Elements - Sulfur

 

Phase

EDAX Periodic Table of Elements - Sulfur

Orientation

EDAX Periodic Table of Elements - Sulfur

Calcite

Calcite

0.1%

CuFeS

CuFeS

22.3%

FeS

FeS

12.4%

NiFeS

NiFeS

4.6%

EDAX Periodic Table of Elements - Sulfur

(Fe,Ni,Co)AsS

10.4%

NiAs

NiAs

48.4%

EDAX Periodic Table of Elements - Sulfur

Pores

1.8%

Total:

100.0%

Topography Map
Topography map - Fully

Orientation Map
Orientation map - 12 mm out

Composition Map
Composition map - 20 mm out

BSE Image
BSE image

The FSD images above were produced by varying the camera insertion distance of the FSD detector. When the camera is fully inserted, topographical contrast is most dominant, but when retracted to 12 mm, orientation contrast is more visible. With further camera retraction, compositional contrast appears approaching the level of detail formerly only achievable with a backscatter electron (BSE) detector in the standard non-tilted imaging condition.

Wavelength Dispersive Spectrometry (WDS)

Sulfide Compounds

Galena

Cinnabar

Galena (PbS) (top) and Cinnabar (HgS) (bottom) are sulfide compounds that have elemental peaks that directly overlap with the Si-Ka X-ray peak. The EDS (green) shows only a broad peak with some possible distortion from symmetric, but the WDS spectrum (red) distinctly isolates the individual contributions of the X-rays of each element to the analysis.