ncat JP3354 Hematite after Pyrite, Mount Goldsworthy (Shay Gap), East Pilbara Shire, Western Australia

Not sure of the chemistry here, but it appears to be pyrite altered to goethite, then partially altering to hematite. Or possibly the other way round. All with a bit of relict quartz. Ex Jo Price Collection. Width of view 6mm. Stack of 45 images.

Click on the image below for a higher resolution version.