Unitedstatesofamerica1 Posted December 15, 2017 Share Posted December 15, 2017 Found in raubsville Pennsylvania Quote Link to comment Share on other sites More sharing options...
Au Seeker Posted December 16, 2017 Share Posted December 16, 2017 Are you suire it's not a fossil? 1 Quote Link to comment Share on other sites More sharing options...
Unitedstatesofamerica1 Posted December 16, 2017 Author Share Posted December 16, 2017 I'm not sure what it is, the last photo is interesting I can't figure out what those yellow line intersecting over each other Quote Link to comment Share on other sites More sharing options...
chrisski Posted December 17, 2017 Share Posted December 17, 2017 Looks to me like some sort of conglomerate. The older rock looks like it has the quartz nodules and the younger rock is some sort of concretion or limestone building. 1 Quote Link to comment Share on other sites More sharing options...
Morlock Posted December 17, 2017 Share Posted December 17, 2017 Smash it with a hammer and show a picture of the inside. 1 Quote Link to comment Share on other sites More sharing options...
4meter Posted December 17, 2017 Share Posted December 17, 2017 Sample needs a cleaning first using a stiff plastic brush or a brass brush. Be careful with the yellow mineral. I see what looks like 3 distinct parts of this sample; the yellow, radiating crystals, the mammalian gray/white material & the "chalky" white area. Once cleaned, test each part for hardness, streak, fizz test with weak acid or warm vinegar. Report your findings. 1 Quote Link to comment Share on other sites More sharing options...
d_day Posted December 17, 2017 Share Posted December 17, 2017 The "yellow lines" are crystals. I'm thinking aragonite, but I can't tell for sure from the photos. The third photo shows some chalcedony. Both appear to have grown on whatever the host rock is. And please, don't smash it as a previous poster suggested. The interesting parts are most likely surface deposits and breaking it open isn't likely to show us anything new. 1 Quote Link to comment Share on other sites More sharing options...
4meter Posted December 18, 2017 Share Posted December 18, 2017 (edited) Well, having mulled over the photos, here is my best quests with no other info, using one of the photos: Edited December 18, 2017 by 4meter 1 Quote Link to comment Share on other sites More sharing options...
Unitedstatesofamerica1 Posted December 19, 2017 Author Share Posted December 19, 2017 It can be scratched with a knife, the rock scratches copper, I put vinegar on it and there was no reaction Quote Link to comment Share on other sites More sharing options...
4meter Posted December 19, 2017 Share Posted December 19, 2017 I'm going with a piece of quartz with an overgrowth of iron stained tremolite and containing some spotty mineralization. Here's a few links that will help you understand the Geology of where your hunting: Geology Map Geology of Northhampton County 1911 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.