An interesting Hill Country Rock

If you're always looking down when you're outside, it might not mean you're depressed; it could just mean that you are a rock hound like me. I runs in the family. In the ten years we've lived here our pile of interesting rocks, fossils, arrowheads and other finds has grown into an impressive cache of natural history. Now that we have the new hill in Kingsland to explore, I'm sure we'll be adding to it in future years.

The kids found this rock last weekend and they are sure it's a dinosaur egg (dino do?) fossil. The cracks are unusual. While it is a gray boring rock color, its cracks make it unlike any rock we've ever found around here..."Here" being the Hill Country of Texas.

I told them that I'd take them over to the Natural History Museum on the UT campus to have someone looks at it and tell us more. We've done that before with interesting stuff we've found outdoors and the woman we spoke to in the basement level was very agreeable to explaining what she thought our find was (and what it wasn't). Usually stuff turns out to be way more mundane than we imagined.

The color is wrong, by the way. I played with the picture in photoshop and illustrator before posting it here. If you have any ideas about this rock, I'd sure like to know what it is. I'll tell you when we know.