Ozida Posted April 19, 2019 Share Posted April 19, 2019 (edited) Hi there, Wondering if anyone could help me identify this rock/glass/thing. Found in northern Ontario, Canada, in a pine wood not far from water. Originally covered in a grayish crust, which I barely managed to take off by 60-grit sandpaper (some crust can still be seen in the photos below). The piece is fairly light (18g). When heated, it does not melt and/or produce any smell. It’s not magnetic. Hard to break (managed to chip a few smaller pieces with a help of pry bar and a hammer). Dark brown with some gold, somewhat see-through on light. Many internal scratches and a few tiny air bubbles. Thanks in advance for any tips/ideas! Side view -1: http://s000.tinyupload.com/index.php?file_id=55207721827330970020 Side view -2: http://s000.tinyupload.com/index.php?file_id=27420301959146811367 Side view -3: http://s000.tinyupload.com/index.php?file_id=61701579336150764755 Fron view: http://s000.tinyupload.com/index.php?file_id=39964980694974088328 Chipped side -1: http://s000.tinyupload.com/index.php?file_id=07257296844360863182 Chipped side -2: http://s000.tinyupload.com/index.php?file_id=01909660207315445216 Daylight see-through: http://s000.tinyupload.com/index.php?file_id=05467695300996656440 Intesive light: http://s000.tinyupload.com/index.php?file_id=48366861124108723519 Edited April 19, 2019 by Ozida Photos uploaded Quote Link to comment Share on other sites More sharing options...
Diggingd Posted April 20, 2019 Share Posted April 20, 2019 I'm definitely not expert, but it definitely resembles fire agate, but I'm sure if you can do all the test the fellow guys here they could probably do a better job identifying it! Just remember it is hard to tell just off a picture everyone will tell you that. Quote Link to comment Share on other sites More sharing options...
d_day Posted April 20, 2019 Share Posted April 20, 2019 Well, if there are air bubbles, it’s most likely to be slag. I thought maybe copal or amber, but your heating of the piece eliminated those possibilities. Quote Link to comment Share on other sites More sharing options...
Ozida Posted April 20, 2019 Author Share Posted April 20, 2019 Diggingd & d_day - thanks for your replies! Not expecting anything fancy of it, very well may be the slag. Quote Link to comment Share on other sites More sharing options...
4meter Posted April 22, 2019 Share Posted April 22, 2019 I think Diggingd is spot on the ID of the sample. Your sample looks very much like the small pieces of Fire Agest from S.E. Arizona Quote Link to comment Share on other sites More sharing options...
Bedrock Bob Posted April 22, 2019 Share Posted April 22, 2019 Agate is pretty durable, hard stuff. When it fractures the broken faces are short and often end in step or hinge fractures. This specimen has long, thin flakes that end in a feather edge. The fractured have ripples. This indicates a much softer material like glass or obsidian. If there are little bubbles in it I would say it is opalite glass. A crafts creation. I have a friend who makes jewelry and she does opalites. That looks like something that might have been left over after she formed her little jewels. A hardness test would differentiate glass from agate. I have no idea what it is but the fractures look like glass to me. Quote Link to comment Share on other sites More sharing options...
Haderly Posted April 22, 2019 Share Posted April 22, 2019 It is not fire agate. I would bet on slag or obsidian. The rainbow is probably light being refracted through an internal fracture. Quote Link to comment Share on other sites More sharing options...
d_day Posted April 22, 2019 Share Posted April 22, 2019 Definitely not fire agate. The small bubbles inside preclude agate. Quote Link to comment Share on other sites More sharing options...
Morlock Posted April 23, 2019 Share Posted April 23, 2019 I'm thinking slag. Quote Link to comment Share on other sites More sharing options...
Ozida Posted April 26, 2019 Author Share Posted April 26, 2019 Thanks for responding, everyone! Much appreciate everyone's input. Quote Link to comment Share on other sites More sharing options...
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