A friend of mine gave me a bucket of stuff that was labeled spodumene when she retired from making pottery. The stuff looks like a gray talc -- I was suspicious of it and so piled up a teaspoon or so of it in the middle of this glaze catcher and fired it to cone 10 in oxidation. It's very brown and unlike what I hoped it would be.
I know that for awhile there were some high iron spodumenes going around. Could this be one of those? Any other ideas.