timloco
has rocks in the head
Member since April 2012
Posts: 545
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Post by timloco on Oct 14, 2016 12:59:11 GMT -5
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metalsmith
Cave Dweller 
Member since October 2012
Posts: 1,537
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Post by metalsmith on Oct 14, 2016 14:19:58 GMT -5
Looks to be chrysocolla, particularly with the "agate-y parts": gem silica. Remarkable find. The red blue combo, Sonora sunrise would re-inforce this view. As for value, someone more local would be able to better inform you.
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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turquoise?
Oct 14, 2016 14:31:08 GMT -5
via mobile
Post by NDK on Oct 14, 2016 14:31:08 GMT -5
Chrysocolla/gem silica was my thought too. Very nice slabs. Good luck with the sale.
Maybe offer them here in the buy/sell section when you are ready to sell?
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Post by Donnie's Rocky Treasures on Oct 14, 2016 14:55:47 GMT -5
My jaw would drop too, plus I would be dancing a jig for joy! Gorgeous slabs!!! It does look like gem silica.
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Post by toiv0 on Oct 14, 2016 18:26:52 GMT -5
I think gem silica also. How much does it weigh? Did you slab the whole thing up? I might be interested if her price is right.
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Don
Cave Dweller
He wants you too, Malachi.
Member since December 2009
Posts: 2,616
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Post by Don on Oct 14, 2016 19:41:13 GMT -5
Chrysocolla with gem silica and malachite. Could be inspiration mine, ray mine, Baghdad mine, etc. Very nice.
$25-$100/slab, easy if it is solid.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,723 
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Post by Fossilman on Oct 15, 2016 9:51:38 GMT -5
Liking the colors of those slabs....
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timloco
has rocks in the head
Member since April 2012
Posts: 545
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Post by timloco on Oct 15, 2016 11:49:29 GMT -5
Cool! Thanks everyone for the feedback. So I slabbed up the whole rock and I'll see what she wants to do, I might be able to trade some cabs from it for some slabs. It's really crumbly it'll need to be stabilized for sure, the slabs just pop in half at the slightest pressure. the gem silica bits leave little vugs inside but they're mostly close to the edge.
So I live in Colorado and an old time rock meister I know put this comment on my FB post: "Beautiful Colorado Turquosie great hard as well - by the color and fracture it is from the gambling town used to pick up off the sidewalk about 37-38 years ago."
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metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
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Post by metalsmith on Oct 15, 2016 12:18:49 GMT -5
Cool! Thanks everyone for the feedback. So I slabbed up the whole rock and I'll see what she wants to do, I might be able to trade some cabs from it for some slabs. It's really crumbly it'll need to be stabilized for sure, the slabs just pop in half at the slightest pressure. the gem silica bits leave little vugs inside but they're mostly close to the edge. So I live in Colorado and an old time rock meister I know put this comment on my FB post: "Beautiful Colorado Turquosie great hard as well - by the color and fracture it is from the gambling town used to pick up off the sidewalk about 37-38 years ago." Hi Timloco I suggest you go to google and enter the terms "Colorado turquoise" then click images. Do the same for "Chrysocolla gem silica" With respect, crank the handle, exercise the grey muscle and kindly conclude here your own opinion. None of us internet armchair commentators have the sample in our hands. There are also other properties to investigate. SG either side of 2.5 should differentiate. |
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metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
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Post by metalsmith on Oct 16, 2016 13:53:09 GMT -5
Cool! Thanks everyone for the feedback. So I slabbed up the whole rock and I'll see what she wants to do, I might be able to trade some cabs from it for some slabs. It's really crumbly it'll need to be stabilized for sure, the slabs just pop in half at the slightest pressure. the gem silica bits leave little vugs inside but they're mostly close to the edge. So I live in Colorado and an old time rock meister I know put this comment on my FB post: "Beautiful Colorado Turquosie great hard as well - by the color and fracture it is from the gambling town used to pick up off the sidewalk about 37-38 years ago." I'm just wondering whether the two minerals, chrysocolla and turquoise might be occurring together and / or whether this might contribute to a local name e.g. Colorado Turquoise? In the same manner as Herkimer Diamonds. +/- turquoise as per Herkimer - diamond. Any thoughts on this? |
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Post by vegasjames on Oct 16, 2016 17:07:42 GMT -5
Cool! Thanks everyone for the feedback. So I slabbed up the whole rock and I'll see what she wants to do, I might be able to trade some cabs from it for some slabs. It's really crumbly it'll need to be stabilized for sure, the slabs just pop in half at the slightest pressure. the gem silica bits leave little vugs inside but they're mostly close to the edge. So I live in Colorado and an old time rock meister I know put this comment on my FB post: "Beautiful Colorado Turquosie great hard as well - by the color and fracture it is from the gambling town used to pick up off the sidewalk about 37-38 years ago." I'm just wondering whether the two minerals, chrysocolla and turquoise might be occurring together and / or whether this might contribute to a local name e.g. Colorado Turquoise? In the same manner as Herkimer Diamonds. +/- turquoise as per Herkimer - diamond. Any thoughts on this? It is possible. Gem silica (silicated chrysocolla) is just chalcedony stained with copper salts. Contrary to the name it is not chrysocolla. So the chalcedony could be infused with turquoise. |
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SirRoxalot
freely admits to licking rocks
Member since October 2003
Posts: 790
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Post by SirRoxalot on Oct 29, 2016 16:19:51 GMT -5
Easy to stabilize, and well worth the effort, search the forums for how to do it. I'd suggest the epoxy in acetone soak under vacuum vs the opticon with heat, not sure how well chrysocolla is going to take heat. A brake bleeder and old mason jar makes a great vacuum, cheap 'n easy.
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