CouchCandy
636
9
0
8 on the mohs scale. It was found on the Leelanau Peninsula in Michigan or in Coldwater Michigan ( I had an overloaded shelf of rockhounding trays break and finds from both areas got mixed up). The Botryoidal parts in the middle remind me of Chalcedony. But the shape kind of reminds me of a vertebrae or possibly even some kind of brachiopod, or eroded silicified coral fossil. Any help with identification would be greatly appreciated.
Krauterhosen
Imma need about 2-3 hundred more pictures to be sure.
spontaneous9
Pegmatite. I see a big plagioclase crystal in it, but looks like it had exposure to further contact metamorphosis after having cooled slowly, due to surface presence of small milky quartz crystals, which now are all rounded down. So then it was exposed probably by glacial erosion and due to its area of provenance, most likely tumbled in moraine &/or esker deposits. Based on Mohs scale evidence, I have to say it's igneous. Therefore, not a fossil.
CouchCandy
Hey, thank you so much for the thorough explanation. The shape really threw me for a loop. Then I remembered I have an expensive (to me $150 ain't cheap) freaking test kit. What's the point in having tools if you don't utilize them, you know? Pegmatite wasn't even on my radar. So thanks again, this one was really bugging me.
DontNeedAWeatherManToKnowWhichWayTheWindBlows
That's a lot of pictures of a rock - petrified bone, most likely?
CouchCandy
I tried to get all the angles that I could, my phone isn't so great and I'm very much overly enthusiastic about rockhounding lol.