Pot Metal...what to do with it

So I'm not sure how most yards are out there, but the ones that I deal with don't have a category or price scale for pot metal.
Most of us know what pot metal is....it can be light gray, dark gray, sometimes have a golden rainbow type color to it, when but always cast, always non-magnetic, when broken will have a gray color like aluminum, and always heavier than aluminum but lighter than steel.
Do most of you guys slip this in with your cast aluminum, knowing that the guys at the yard will usually only check it with a magnet, or do you put it in your shred pile. How many of you guys actually has a yard that has a category for this?

It's called die-cast at my yard. Pays $.15. Fence post tops, piece the holds the blade on a ceiling fan, various parts of cheap plumbing fixtures, ornamental things, some parts in doorknobs, etc.

in the past I called it Zink-Die cast. it used to be much less then aluminum, and the yards would do there best to keep it out of the aluminum. However in recent years the price now exceeds Aluminum. we did an acid test to tell it apart from aluminum. I don't remember exactly but if tuned black it was one or the other. Old auto grills and some trim in the 1950s and 60s 70s were made of it, window crank knobs some door handles as well as carburators. The items mentioned here sound right also. I have not taken any it in a few years but I will call the locals and update this post with a price. It sounds like when they let you mix it into your aluminum its like letting you mix your #1copper with your #2copper paying for #2. It may pay for you to ask about Zink-Die cast. If anyone else knows about the acid test please speak up..
Lightfoot

SIMS graded it differently today. 0.30/lb for die cast, 0.60/lb cast al.

Apparently my yard likes to keep me guessing as to what they want to classify it from trip to trip. Also, I guess there are a few things that I bring in that are borderline and I've been going to that yard for years so I tend to get the better grade. They do buy die cast and aluminum separately and when I went a few weeks ago die cast was .16 and cast was .43. From what I've been told scrappinlife, you are incorrect about the die cast weighing more than the cast. The guy at my yard said that die cast was lighter than cast and you would be able to see dimples and other markings like it was formed in a die cast. The best thing I ever did was get the guy at my yard to come check out my stuff and help me get an idea of what stuff would be classified as. I tend to get a pretty good quantity of the same stuff all the time so its nice to easily be able to sort it out.