Worked with a fist-sized mass of crystalline pyrite today. Sat it on a fence rail out on the deck, natural shaded light. Tripod and focus rail, Pentax K-50 w/ Tamron SP Di 90mm Macro. Images stacked on the Mac using Focus Stacker and a bit of editing in Gimp. Hopefully the links won't be a problem this time, I am using the tiny url server on them.
https://tinyurl.com/y7d9tsgq
https://tinyurl.com/ydd7s9tt
https://tinyurl.com/ybjoof7s
Hmm, I did have to use the [url] tags, because the tiny url address doesn't end with '.jpg' and it evidently doesn't recognize it as an image when using the [img] tags. Ah well.
Cubic pyrite crystals
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Cubic pyrite crystals
I go by "Jim" in real life, "RoxnDox" on here...