alej9582 Posted September 9, 2018 Share Posted September 9, 2018 Guys (and Girls), I know I have seen a specimen similar to this one somewhere but cant remember where... Can you guys take a look? Thanks Alex Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted September 9, 2018 Share Posted September 9, 2018 Looks like water-worn quartzite to me. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
alej9582 Posted September 9, 2018 Author Share Posted September 9, 2018 24 minutes ago, Tidgy's Dad said: Looks like water-worn quartzite to me. Here is a pic with a macro. @Tidgy's Dad Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 9, 2018 Share Posted September 9, 2018 This looks like a well-cemented finely conglomeratic sandstone. Look at the fine parallel bedding that occurs over part of the stone that is especially noticeable in the far right of the third photo where you can see a little fine gravel on top. The faux bone texture in your macro photo is where the fine gravel/coarse sand fell out leaving many vugs. 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Plantguy Posted September 9, 2018 Share Posted September 9, 2018 Hey guys, I'm gonna throw out another option but I can definitely see the options you are proposing... I'm thinking its actually another very worn bone fragment--probably silica replaced...could be that dang really dense dugong stuff or from something else...I've seen some similar wood pieces with banding/growth layering but from that porous looking section on the one side in the last photo and the faint banding on the other side I throw out bone fragment for discussion... Regards, Chris 1 Link to comment Share on other sites More sharing options...
Innocentx Posted September 10, 2018 Share Posted September 10, 2018 The bands are so close together and evenly spaced that I thought wood. Wood could rot or be damaged in many ways before fossilizing, and might account for the porous looking area. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Plantguy Posted September 10, 2018 Share Posted September 10, 2018 (edited) 2 hours ago, Innocentx said: The bands are so close together and evenly spaced that I thought wood. Wood could rot or be damaged in many ways before fossilizing, and might account for the porous looking area. Here's a couple of pieces of bone from that formation that I think I showed in another thread somewhere.. Zoom in on the 2nd photo and you'll see subtle banding and bone structure...I'm wondering it that can be same in the unknown... Regards, Chris Edited September 10, 2018 by Plantguy trying to add additional photo 3 Link to comment Share on other sites More sharing options...
alej9582 Posted September 10, 2018 Author Share Posted September 10, 2018 Under the scope I ruled out quartzite and sandstone. I originally thought worn out tooth fragment but saw the porous side and kind of crossed that out. Hardness test agains quartz shows it is way softer. Bands look like dugong but it is too porous. Shall we call it unknown sp.? Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 10, 2018 Share Posted September 10, 2018 I have never seen the detailed banding of a dugong bone. I think that is what it might be. I think that I now see where the banding curves upward to the left in the right side of this photo. 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Innocentx Posted September 10, 2018 Share Posted September 10, 2018 11 hours ago, DPS Ammonite said: curves upward to the left in the right side of this photo. The curve is very slight, but I saw it. I didn't know dugong bone had this banding so @Plantguy is most likely right. Chris, is this replaced with material that's different than what you're used to seeing for dugong? "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
alej9582 Posted September 10, 2018 Author Share Posted September 10, 2018 2 minutes ago, Innocentx said: The curve is very slight, but I saw it. I didn't know dugong bone had this banding so @Plantguy is most likely right. Chris, is this replaced with material that's different than what you're used to seeing for dugong? Here is an example of anotherone I have which is Dugong. Note the Banding. 1 Link to comment Share on other sites More sharing options...
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