Geology Thread

That's a pretty rock, OP.

>>1053584
There's a creek that runs through my farm that produces an assload of geodes.

Enough so that I bought a dedicated band saw and cheapo rock tumbler for them so I can saw them up without them shattering, which I then sell on ebay for anywhere from $5 for a meh-tier ring out of one to $5000 for a large, well-polished half. Paid for the band saw in 1 outing and has been an interesting, if sporadic, source of income.

In other news, about 1 in 20 suspected geodes end up being oil/tar filled. Which makes a goddamn mess and they're not worth anything.

>>1053584
Sauce on your rock pls

>>1054337
Looks like a geode

>>1053584

Yes, or at least I want to be. Please share some very good books if you could. Looking for guide books as well as enjoyable, sit down and read books.

File: 51FEc4gkQML._SL1500_.jpg (40KB, 330x500px) Image search: [Google]

40KB, 330x500px

>>1054635

For example, this is something I am looking to read after I finish American Serengeti, has anyone read it?

https://www.amazon.com/gp/aw/d/0374518734/ref=zg_bs_13603_9?ie=UTF8&psc=1&refRID=Z0EK3CBV5QPTV2WHJT6Y

>>1054337
its opal

>>1054630
Lewd

>>1054642
Thanks... how is that an opal? Aren't those tiny shiny eggs?

>>1054638
I've read it. It's good, but I think you'll get more out of it if you already know the geological places he mentions. If not you probably wont learn too much.