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thorpey
50.2% (Neutral)
Newbie Topic Starter

17 years ago

🔗Personal-Album-186-Image-019[linkphoto]Personal-Album-186-Image-019[/linkphoto][/link]

Its a black sphere about 3/4 inch surounded by a sulphurous deposit found in a slate mine.
Any ideas as to what it might be or what might have caused it.
Thorpey

Nut deep in water!

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sparty_lea
50.2% (Neutral)
Newbie

17 years ago

Oxidising pyrite perhaps?

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Those that understand binary and those that do not!

thorpey
50.2% (Neutral)
Newbie Topic Starter

17 years ago

there is a fair bit accross the tiped slate in the chamber this was the only piece this big but there was plenty of yellow sulphurous rings varying in size.
Thorpey

Nut deep in water!

sparty_lea
50.2% (Neutral)
Newbie

17 years ago

Probably is pyrite (iron sulphide) then.
It usually has a more brown look to it once it starts to decompose but it can go black or even irridescent.

There are 10 types of people in the world.

Those that understand binary and those that do not!

thorpey
50.2% (Neutral)
Newbie Topic Starter

17 years ago

thanks.
Thorpey

Nut deep in water!