That looks like a meteorite, do me a favor see if a magnet (neodymium) sticks to it HARD, if it won't stay on it its a meteor wrong, then we go to what else it may be, try and cut it with a knife edge, and drag it on some white tile
These are standard tests, but from the picture and your description, i would say meteor,,,if it iscan you go back to the spot you found it? Or mark it on a map? And if so you could be looking at 100$ a gram. Let meknowhow those tests go! Good luck!
Sry i missed this post some how, with a fair sized neodymium magnet it is only magnetic in the spots with clear iron oxidization with a knife, it didnt cut it get damaged, it looks more like it was rubbing the edge of the knife off onto it, the broken inside part, under higher preassure did have a small mark and some crumbling off of the rock. I used a ceramic honer for the for the streak test, and the color was a dark brownish red. And yeah i know where i found it