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Please help identify the material


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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!

  1. Side view -1: http://s000.tinyupload.com/index.php?file_id=55207721827330970020
  2. Side view -2: http://s000.tinyupload.com/index.php?file_id=27420301959146811367
  3. Side view -3: http://s000.tinyupload.com/index.php?file_id=61701579336150764755
  4. Fron view: http://s000.tinyupload.com/index.php?file_id=39964980694974088328
  5. Chipped side -1: http://s000.tinyupload.com/index.php?file_id=07257296844360863182
  6. Chipped side -2: http://s000.tinyupload.com/index.php?file_id=01909660207315445216
  7. Daylight see-through: http://s000.tinyupload.com/index.php?file_id=05467695300996656440
  8. Intesive light: http://s000.tinyupload.com/index.php?file_id=48366861124108723519

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Edited by Ozida
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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. 

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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

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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.

 

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