I found this rock awhile ago... can't remember where though. I am having trouble figuring out what exactly it is. Hopefully you experts can shed some light on it for me. Thanks! I do have other photos but it won't let me upload anymore. !
Possible botryoidal iron-oxide concretion. Botryoidal refers to the globular texture that looks like a bunch of grapes. More information such as streak color and density can be found at the link provided below to further verify identification.