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[Jhon P]

This rock was clamped in a drop saw that I bought vat an estate sell last summer
3 1/4”. Degrees bfidnt know what else to call it.

[irockhound]

I think I know this one thanks to Rocks2dust identifying similar material that I got in my gifted estate rock.  Josephine's Crown but of course he also mentions Mohawkite so maybe check that too.

Some gorgeous pieces there, for sure. The white agate with metallics is almost certainly "Josephine's Crown" from SW Oregon - fetches nice prices. Looks similar to Mohawkite. Not really marcasite, but a blend of various metals. Still, it's a good idea to not store in a damp place (can oxidize/pit similar to pyrite, marcasite and similar metal oxides and sulfides).

[hummingbirdstones]

Hard to tell between Josephine's Crown and Mohawkite, but I'm leaning Mohawkite.  Mostly because I saw this picture of a Mohawkite cab and it looks really close:

[Jhon P]

Here’s a cab I cut out of it.
There was about six slabs in the saw plus what I got out of the preforming

[Felicia]

Some good looking material there

[rocks2dust]

Whether it is Josephine's Crown or Mohawkite, those can be 2 of the spendiest metal-containing gem rocks (apart from gold in quartz) out there. Beautiful pieces!

[Sandsave]

Good find, was it muddy like most pyrite?

[Jhon P]

Yes. Black mud.

[BlueWood]

I like the mix.  turned out great Jhon.

[ileney]

I think it is mohawkite. I have some mohawkite that looks quite similar. Will post if I can find where I put it.

[Ryaly2dogs]

I love the stories about what was left behind on the old saw.  It always amounts to a pleasant surprise.  Beautiful pics of that material!