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Post by rocksinmypockets on Mar 12, 2023 14:18:04 GMT -5
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Post by mohs on Mar 12, 2023 14:25:44 GMT -5
where was it found ?
looks glassy obsidian like
perhaps by the feel of how it weighs
slag would have dense heavy feel
obsidian fairly light
not sure how to break it
how big is it ?
could try knapping an edge with another stone
or metal object
slag wouldn't chip very easily
Welcome to RTH !
Ed
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Post by rocksinmypockets on Mar 12, 2023 14:57:00 GMT -5
Unfortunately, I don’t totally remember where I found the piece. I remember I found some larger rock pieces near a railroad track outside my fiancés family’s neighborhood (hence the thought that it might be slag), but I don’t remember if this piece was part of that find. The piece as a whole measured at around 3.5 in wide/9 in circumference around the widest part of the rock. However, in trying out the knapping idea w my giant hunk of quarts, I achieved this outcome, haha:  I will say, knapping the new sharp edges of the halved rock does result in chips of the piece falling off. Not sure if that narrows it down. Thanks for the welcome! Happy to be part of the community. |
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Post by fernwood on Mar 12, 2023 15:00:25 GMT -5
Can you see any bubbles in it? If so, then probably slag.
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Post by vegasjames on Mar 12, 2023 16:31:55 GMT -5
Enlarging the pics, looks like obsidian.
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Post by mohs on Mar 12, 2023 16:51:04 GMT -5
That quartz rocked  it |
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hoolligan1938
spending too much on rocks
Member since January 2022
Posts: 253
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Post by hoolligan1938 on Mar 12, 2023 16:59:58 GMT -5
I don't believe that slag would be that smooth and shiney. Looks like black obsidian to me.
Jim
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Post by rocksinmypockets on Mar 12, 2023 17:19:45 GMT -5
Thanks for the responses all. I’m going to go ahead with breaking them up into more tumble-able pieces (especially now that I know how to with my quartz chunk). Once I make those, I should have enough to run a barrel of obsidian (gotta finish my current batch of jaspers/agates though).
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Post by mohs on Mar 13, 2023 14:21:35 GMT -5
while were waiting for jasp/agate to tumble smooth its customary of mohs to ask Phoenicians if they ever got a Ladmo Bag?  |
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Post by susand24224 on Mar 13, 2023 15:11:31 GMT -5
I'm in the obsidian camp. the best way to break it (if you don't have a saw) is to use a hammer and chisel and try to break with the chipping/breaking that has previously occurred. If memory serves me correctly, obsidian doesn't have natural cleavage, so this might be a slight indentation where you can get your chisel in.
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Post by rocksinmypockets on Mar 20, 2023 15:06:52 GMT -5
while were waiting for jasp/agate to tumble smooth its customary of mohs to ask Phoenicians if they ever got a Ladmo Bag? I have not; is that referring to the show from Channel 5? I’m just shy of 10 years living out here, so sorry if that seems like a silly question, haha. |
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Post by mohs on Mar 20, 2023 15:47:55 GMT -5
while were waiting for jasp/agate to tumble smooth its customary of mohs to ask Phoenicians if they ever got a Ladmo Bag? I have not; is that referring to the show from Channel 5? I’m just shy of 10 years living out here, so sorry if that seems like a silly question, haha. nah and yeah... they were on KPHO Channel 5 way back in the daze I never got a authentic LadMo Bag either actually I did better than that butte its long story...m  stly being that your fairly new to Phoenix then its my duty to spread the news ha ha Ed |
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Post by rmf on Mar 20, 2023 15:55:54 GMT -5
Others have hit the nail on the head here. Obsidian tends not to be bubbly. Not always true. Also, obsidian tends to not be green as the corner of image two appears. Can't say with 100% but I would lean toward man made either slag or probably glass factory.
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rockbrain
Cave Dweller 
Member since January 2022
Posts: 3,217
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Post by rockbrain on Mar 21, 2023 9:22:03 GMT -5
Is this piece green? It looks green in the pics. My guess is glass but you might want to get a positive ID before breaking it up. Green obsidian is rare.
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Post by manofglass on Mar 21, 2023 9:26:39 GMT -5
Looks like glass
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it
stly 
Maybe you can post some pictures here