My c/d/s wood is the typical "mixed hardwood"-- a lot of beech, some black birch, some rock maple. But there are some fairly small splits, 4 or 5 inches, that are noticeably heavier, holding onto their bark, with fewer and thinner cracks, and reluctant to burn despite having been stacked (by moi) out in sun and wind for about six months. I don't remember my wood guy saying anything about oak, but is it possible that's what these are? The bark, to my still only semi-educated eye, doesn't look that much different from the maple-- maybe a little flatter, thinner, lighter, but nothing dramatic or definite that it couldn't just be another of the many species of maple, except that it's not as dry as the rest of the wood that's had the same treatment. It's a fair percentage of my firewood supply for this winter, but I'm thinking of picking it out of my shed and putting it right back out on the stacks until next year if I can do without it this year. Anybody have any thoughts about ID'ing this wood just from the splits or what it might be? If I can figure out how to do it, I'll post a pic, but that may take me a while.