textiger
freely admits to licking rocks
Member since May 2005
Posts: 946
|
Post by textiger on Dec 10, 2005 18:12:58 GMT -5
As I mentioned in my last thread, I got to do some rockhounding and fossil hunting at my father in law's place in central Texas. Most everything is limestone, caliche and calcite, with hunks of gray flint. I picked up about 5 pounds of calcite to experiment with and not much else. In a streambed, I found a couple small pieces of this reddish stuff. It stuck out because, as I said, most of the place is limestone and not much color to it. I picked up a couple pieces and could see that it was made of tiny shells cemented together, like a travertine or something. Later that day, while out for a walk, I found a few more, larger pieces, some rather yellowish/brownish. I don't have high hopes of polishing it, but thought it would be worth putting to a saw (as soon as I get one). Any ideas what it is? (sorry if the pix are a little fuzzy--I was Mr. Shakycam for some reason today). About the whole load I also found these two. The ammonite segment is the slight smaller of two I found in the stream bed. I gave the bigger one to my host. The gray blob is part of the ocean floor, made of the remains of shells cemented together. I'll figure out something to do with it. The ammonite segment is about 7 inches long. matt
|
|
|
Post by americanbulldogsnj on Dec 10, 2005 18:43:53 GMT -5
Wish I had the wisedom of the others on the board so I could ID them for you, but it was an awesome haul! I love the ammonite, I found an imprint of a small one in Beaun France in the middle of a pasture, as I looked around there were tons of fossils everywhere, I was only allowd to take one The pinkish stones with the shells in them will probably polish up nice, at least it'll be fun to try. Thanks for sharing ! Marian
|
|
|
Post by Cher on Dec 10, 2005 18:56:31 GMT -5
Sorry I can't help you id anything but it looks like you had fun on your trip. Had to look up the ammonite, are you going to polish yours? I found pics of some hand polished, very pretty.
|
|
Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,504
|
Post by Sabre52 on Dec 10, 2005 19:18:42 GMT -5
I've rock hunted the hill country a few times. The area around San Saba and Gatesville has lots of fossiliferous limestone which looks similar to what you have. Usually contains fragments of crinoids, corals and brachiopods. Comes in pinks, balcks and browns. Probably kind of tough to tumble but much of it cabs up easily and takes a fine polish....Mel
|
|
textiger
freely admits to licking rocks
Member since May 2005
Posts: 946
|
Post by textiger on Dec 10, 2005 20:34:06 GMT -5
That is good news, Mel. I'd love to see what it looks like polished. I kinda thought it was in the limestone family--any suggestions on how to polish it?
Cher, I will have to see about polishing the ammonite. I had never thought of that.
I am excited to try some of the calcite. I know it's not really tumble-able, but it's some pretty good crystalline rock and of good size. I hope to get a saw early next year (assuming Santa hasn't been paying attention to all my hints) and plan to put it on there first.
matt
|
|
|
Post by Cher on Dec 10, 2005 20:42:14 GMT -5
|
|
|
Post by rockds on Dec 11, 2005 14:25:51 GMT -5
looks like you did pretty good. Need to slice up that first one and see what's inside
robert
|
|
|
Post by Alice on Dec 12, 2005 8:59:38 GMT -5
the bottom picture... the one on the right, looks like a spine!
Your yellow rock looks very much like the rocks we find here locally. Not sure what they are though, but they apear to have small quartz deposits mixed with something else. The pink one, looks a little like granite. But I could be wrong.
|
|
|
Post by creativeminded on Dec 12, 2005 9:37:35 GMT -5
You got a some nice finds there. Tami
|
|
stefan
Cave Dweller
Member since January 2005
Posts: 14,113
|
Post by stefan on Dec 12, 2005 13:04:39 GMT -5
Limestone is pretty easy to cab up- as for polish- I used Cerium with great results- you might even be able to hand polish it (Leather, a paste of water and polish, a little elbow grease)
|
|