Please help a struggling student

[Qion]

Hey guys, I know this really isn't the place, but honestly I have run clean out of ideas. I have a project in my science class right now, and part of it is to identify a rock that i picked up off a beach in MI. I can't figure out for the life of me what it is. I have tried countless ways of identification, to no avail. Please give me some feedback on what you think it is....

 

[markceltic]

From here it looks like a quartz.Don't look at me for a chemical analysis .

 

[Andrew Adamson]

The first picture looks a little bit like it was formed in a cave, like a stalagmite (speleothem). It's difficult to tell from the photos. Finding it on a beach, though, is pretty unusual.

Try http://www.rockhounds.com/rockshop/rockkey/

 

[Qion]

Thanks, both of you. Mark- It might be Quartz, I'm not 100% sure, I'll have to ask the teach. Andrew- Good link, but it doesn't really identify this rock very well.

I have a good idea that this might be dolomite, which is a sedimentary rock containing crystals. The thing that really screws me up is that this sample looks completely different from the sample that my teacher said was the "same rock".

1 day left to throw together this PowerPoint... damn last 3 weeks of school.....

 

[lurk]

I have seen those before. That is a bit of "Leaverite" (leev-er-ite), at least that is what my granddad told me.

Most of the rocks I picked up as a kid were examples of Leaverite ;-)

 

[Qion]

Lurk, gosh man that was so helpful! lol.....

 

[riccbhard]

That's what I was about to say - either Leaverite or Quartz.

 

[ziess]

It looks a bit like this:
http://www.geology.neab.net/pictures/rock201.jpg
And that's a Dolomite...

 

[Qion]

My thoughts exactly, ziess. I'll find out tommorow and post it from school.

Thanks for the help.

 

[Qion]

Well, the results show that it is actually Quartzite with a large deposit of iron on it Thanks to all for helping me.

Now, off to work on the presentation... bwahahahahahaha.....