sheltie
freely admits to licking rocks
Member since January 2012
Posts: 982
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Post by sheltie on Oct 24, 2013 16:27:54 GMT -5
Here's a new one on me. I slabbed this today and really like it. The dark part of the slab is black. When I was slabbing it in the garage, I did as I normally do, sit next to the saw in case I need to turn it off if something happens. I was reading my Kindle when I thought "is my Golden down here?" She likes to sit next to my chair at night when I'm watching TV and more frequently than I care, she will lie down next to the chair and then get up after a couple of minutes. Almost immediately after that, there is a terrible odor! So bad that I have to evacuate the room and watch TV somewhere else for awhile. SBD!!!! Anyway, while I was slabbing, a similar odor was noticed and it got worse and worse. When the slabbed dropped from the rough, I opened the saw and it nearly knocked me over. How can anything so pretty be so deadly? The smell is similar to, but not the same as sulphur. Anyway, does anyone know what this rock is and/or why it has such a bad odor?
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Post by Hard Rock Cafe on Oct 24, 2013 18:06:27 GMT -5
I don't know, but that's some cool sh*t!
Chuck
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Post by orrum on Oct 24, 2013 19:44:08 GMT -5
I cabbed some oil agate or something named like that from a saw scrap box I bought and it stunk similar to a burnt engine oil sulfur smell, could that be it?
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sheltie
freely admits to licking rocks
Member since January 2012
Posts: 982
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Post by sheltie on Oct 25, 2013 7:48:26 GMT -5
I cabbed some oil agate or something named like that from a saw scrap box I bought and it stunk similar to a burnt engine oil sulfur smell, could that be it? Do you have any pictures?
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Post by orrum on Oct 25, 2013 9:47:44 GMT -5
I cant do pics. No photobucket etc and I know its stuborn but I really dont want to get any more digital than I am. My cell phone is only capable of text n calling! LOL I am a neandrathal!
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Post by phil on Oct 25, 2013 10:28:37 GMT -5
Looks like dino poop that didn't fully petrify!
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Post by jakesrocks on Oct 25, 2013 10:34:30 GMT -5
Is the black area softer than the colorful parts ? If so, it's probably ancient organic mud that didn't make the change over to agate. There is a type of stone called stink stone, which when cut or chipped smells awful.
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Post by phil on Oct 25, 2013 10:44:56 GMT -5
Is the black area softer than the colorful parts ? If so, it's probably ancient organic mud that didn't make the change over to agate. There is a type of stone called stink stone, which when cut or chipped smells awful. See? muddy poop stone! <G>
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Mark K
Cave Dweller
Member since April 2012
Posts: 2,617
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Post by Mark K on Oct 25, 2013 16:11:41 GMT -5
I do believe that you have yourself a chunk of Fart Agate.
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sheltie
freely admits to licking rocks
Member since January 2012
Posts: 982
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Post by sheltie on Oct 25, 2013 16:22:18 GMT -5
Could it possibly be dryhead agate?
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Post by Hard Rock Cafe on Oct 25, 2013 16:31:36 GMT -5
It doesn't look like any dryhead I've seen...
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sheltie
freely admits to licking rocks
Member since January 2012
Posts: 982
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Post by sheltie on Oct 26, 2013 8:20:09 GMT -5
It doesn't look like any dryhead I've seen... I've never seen a black dryhead but the patterns are somewhat similar. On the other hand, I didn't know that Montana agates were petrified wood until recently. So maybe there is a chance.
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thomcrum
off to a rocking start
Member since June 2013
Posts: 9
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Post by thomcrum on Oct 27, 2013 2:06:47 GMT -5
I bought a few slabs of this in South Dakota and when I was cutting cabs out of it I kept thinking the same thing. I kept thinking that was somehow burning my belts. After the third cab I realized what it was. Surprisingly enough although it is a sulfur smell I found that it is actually the black material that seems to contain the smell. I would have thought te yellow would have contained it.
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thomcrum
off to a rocking start
Member since June 2013
Posts: 9
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Post by thomcrum on Oct 27, 2013 2:08:21 GMT -5
I bought a few slabs of this in South Dakota and when I was cutting cabs out of it I kept thinking the same thing. I kept thinking that I was somehow burning my belts. After the third cab I realized what it was. Surprisingly enough although it is a sulfur smell I found that it is actually the black material that seems to be the source of the smell. I would have thought the yellow would have contained it. I was told that it was a local jasper.
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Post by pghram on Oct 28, 2013 16:10:17 GMT -5
Nice looking slab.
Rich
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Post by Bluesky78987 on Oct 28, 2013 18:04:22 GMT -5
Polychrome maybe?
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sheltie
freely admits to licking rocks
Member since January 2012
Posts: 982
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Post by sheltie on Oct 29, 2013 16:02:40 GMT -5
Turns out that this is probably Alabates (sp?) flint or jasper.
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Post by 1dave on Nov 4, 2013 19:03:15 GMT -5
turritella agate has a strong sulfur smell, probably from sulfuric acid converting calcite to agate.
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