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Rockhound.newmexico
Joined: 16 Apr 2018
Posts: 4
Location: New Mexico
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 Posted: Apr 16, 2018 20:52 Post subject: What kind of rock am I ? volcanic with blue pockets |
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We have this rock all over new mexico but I've never seen this with the sky blue pockets, some are solid some are pockets of crystals (the bigger ones) I think my search would be over soon if I could remember what type of rock is the host rock. It cuts and polishes very nicely but again I have no idea what it is
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alfredo
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Joined: 30 Jan 2008
Posts: 690
Location: New York
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Dale Hallmark
Joined: 16 Jun 2014
Posts: 167
Location: Texas Panhandle
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| Posted: Apr 16, 2018 21:55 Post subject: Re: What kind of rock am I ? volcanic with blue pockets |
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I wouldn't think a hardness of 2 would polish very well.
I would have guessed a basaltic porphyry with secondary filling of chalcedony.
Dale
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Rockhound.newmexico
Joined: 16 Apr 2018
Posts: 4
Location: New Mexico
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| Posted: Apr 16, 2018 21:58 Post subject: Re: What kind of rock am I ? volcanic with blue pockets |
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| Dale Hallmark wrote: | I wouldn't think a hardness of 2 would polish very well.
I would have guessed a basaltic porphyry with secondary filling of chalcedony.
Dale |
This hardness is comparable with jasper or agate of this area
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Rockhound.newmexico
Joined: 16 Apr 2018
Posts: 4
Location: New Mexico
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| Posted: Apr 16, 2018 22:02 Post subject: Re: What kind of rock am I ? volcanic with blue pockets |
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Looks almost identical but as I said in the other reply this is a hardness comparable with jasper or agate of the area also if it helps the bigger pockets have little like dogtoitge calcite crystals that react in shortwave uv
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Rockhound.newmexico
Joined: 16 Apr 2018
Posts: 4
Location: New Mexico
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| Posted: Apr 16, 2018 22:18 Post subject: Re: What kind of rock am I ? volcanic with blue pockets |
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The hardness like I said is what had me confused but upon more research of your suggestion I found this post too looks like it is, thanks alot problem solved
https://www.mindat.org/forum.php?read,11,407867,407903
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Pete Modreski
Site Admin
Joined: 30 Jul 2007
Posts: 625
Location: Denver, Colorado
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| Posted: Apr 17, 2018 11:03 Post subject: Re: What kind of rock am I ? volcanic with blue pockets |
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| There are combinations possible; these could be agate/chalcedony filling the vesicles, and then coated on their exterior with a thin layer of the blue-green celadonite. Always lots of possibilities, when it comes to minerals! Some of them might contain zeolite minerals, too.
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