1515Art Posted June 1, 2018 Share Posted June 1, 2018 Question for those that fantasize about geology, don't know what this is, some kind of agete, or petrified amber? Interesting formation anyway, came from someplace in China, a friend of my wife had it and gave it to her because she liked it. Link to comment Share on other sites More sharing options...
Jim Hemmingway Posted June 2, 2018 Share Posted June 2, 2018 Hi 1515Art... I don't know what it is and I won't make a wild guess either. However, thankyou for posting these extraordinarily clear, well-exposed and framed specimen photos. It is a beautiful sample, hopefully someone here will be able to make an ID for you. Jim. Link to comment Share on other sites More sharing options...
DDancer Posted June 2, 2018 Share Posted June 2, 2018 Well its got some interesting eye candy ? for a picture rock. Hehh. Honestly though its a challenge to put a lable on. Two characteristic definitions : Chalcedony, Agate. The bubble *I'll call them that to be polite* like formations are characteristic of chalcedony and the banding in the obverse views are of agate. Both are the same mineral class~ silicate or quartz. On the front below the bubbles is what I call druzzy quartz ~ very small crystalline quartz crystals~ also commonly associated with chalcedony/agate. The druzzy quartz is crystal variety of quartz and chalcedony/agates fall outside of this catagory due to the non-crystalline nature of the silicate. Though I would not do it, takes away from the mental image, if one were to carefully cut one of the bubbles you'd most likely see further agate banding. Link to comment Share on other sites More sharing options...
1515Art Posted June 2, 2018 Author Share Posted June 2, 2018 Jim, thank you and DDancer thank you for the detailed information, agate/chalcedony features except for the crystalline structure and looking at it I'm certain you are correct about the banding in the ummm, protrusions, be a shame to cut or polish and much better as a natural specimen so I'll probably keep it as is and let it work for tips?. im still a little confused, so a silicate of some sort are the insect looking intrusions into the backside any clue, or typical features in these minerals. Link to comment Share on other sites More sharing options...
Steve Herschbach Posted June 2, 2018 Share Posted June 2, 2018 Botryoidal Chalcedony Link to comment Share on other sites More sharing options...
1515Art Posted June 2, 2018 Author Share Posted June 2, 2018 Steve and everyone thank you, botryoidal carnelian chalcedony, some great pictures on that link. Link to comment Share on other sites More sharing options...
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