Mossycup (Bur) Oak. If it is Mossycup then the old acorn caps should be distinctive. Can you find any old acorn caps under the tree? They should have a weird 'mossy' appearance.
Bur oak caps have a distinct fringe along the open edge of the cup. It almost looks like it is trying to sprout tiny roots there.
I was at the local watering hole tonight. Told my friends that, even though we are to old for it, I'm going to gather the Bur oak acorns this year and give them out for planting, and plant some myself. Maybe our grand kids will enjoy them. Bur Oak is getting rare around here, I couldn't take you to another one, other than the one on my place. If I can gather enough before the squirrels and deer get them, I'll start a post and mail them to anyone who wants to plant them. Huge leaves, would make a great shade tree for your grand kids.
I have a nice bur that I planted as an acorn. Plant in fall as soon as they drop at about 2 inches deep. It will emerge next spring. Mine is about 20 feet tall and around 15 years old. It is just now starting to spread and so far does not produce acorns.
I can't tell if it's bur oak, but I have 5 of them that I planted in the yard. I chose bur oak because I like the way the leaves look more than other white oaks. One thing that I've noticed to be distinctive about all of my bur oaks is the bark. The bark is very corky and some of the trees almost look dead when they don't have leaves on them. What I found when I searched about the bark online was that it's a midwestern plains oak and the corky bark is to protect it against fires. The leaves are shaped like a fiddle and are wider at the end.
