ziggy
spending too much on rocks
Member since June 2016
Posts: 483 
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Post by ziggy on Apr 12, 2017 18:19:11 GMT -5
We picked up this gabbro mixed with something tan to pink on a Michigan back road. Been making some pendants from it. It has the granite countertop look in the black parts ( the gabbro) and I have no clue what the light colored inclusions are. Wrapped in a simple minimal groove wrap to highlight the stone.  That one again with two others. The one on the left is also groove wrapped. The one on the right has a copper rolled mount.  |
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Apr 12, 2017 18:36:33 GMT -5
Also groove wrapped this small datolite cab. The fit on the wire near the top sucks but it is what it is.  |
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on Apr 12, 2017 20:12:59 GMT -5
Doesn't gabbro have feldspar?
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Apr 12, 2017 21:21:25 GMT -5
Doesn't gabbro have feldspar? I should have called it black gabbro or black granite. It looks like a kitchen counter except for the inclusions. It's sparkly black. Yes I think it is a kind of feldspar. The pink stuff has no feldspar flash at all. You can tell the pink is not any kind of chatoyant mineral though like most feldspars are. I believe the sparkles in the black are feldspar planes causing the flash. |
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Apr 12, 2017 21:28:16 GMT -5
Doesn't gabbro have feldspar? I should have called it black gabbro or black granite. It looks like a kitchen counter except for the inclusions. It's sparkly black. Yes I think it is a kind of feldspar. The pink stuff has no feldspar flash at all. You can tell the pink is not any kind of chatoyant mineral though like most feldspars are. I believe the sparkles in the black are feldspar planes causing the flash. Well gabbro is similar too but different from granite (I forget the difference). So the black and pink components are likely both gabbro. |
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Apr 13, 2017 9:17:21 GMT -5
I should have called it black gabbro or black granite. It looks like a kitchen counter except for the inclusions. It's sparkly black. Yes I think it is a kind of feldspar. The pink stuff has no feldspar flash at all. You can tell the pink is not any kind of chatoyant mineral though like most feldspars are. I believe the sparkles in the black are feldspar planes causing the flash. Well gabbro is similar too but different from granite (I forget the difference). So the black and pink components are likely both gabbro. Thank you for mixing me up even more  |
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Post by wigglinrocks on Apr 13, 2017 10:07:19 GMT -5
Isn't the black Biotite or something ?
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Apr 13, 2017 21:14:31 GMT -5
Isn't the black Biotite or something ? Well, to be honest, it doesn't even matter. I don't care what it is. I just thought they were black gabbro with pink stuff in them. That's what I'm calling them. Now. Why did I bother to post them would be my next question. Don't answer.... I'm asking myself. |
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Post by rockjunquie on Apr 13, 2017 21:50:50 GMT -5
Isn't the black Biotite or something ? Well, to be honest, it doesn't even matter. I don't care what it is. I just thought they were black gabbro with pink stuff in them. That's what I'm calling them. Now. Why did I bother to post them would be my next question. Don't answer.... I'm asking myself. I'm glad you posted them. I've never seen the stone before and I like seeing people's work. So, thanks for posting.  |
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Post by toiv0 on Apr 13, 2017 22:35:58 GMT -5
Isn't the black Biotite or something ? Well, to be honest, it doesn't even matter. I don't care what it is. I just thought they were black gabbro with pink stuff in them. That's what I'm calling them. Now. Why did I bother to post them would be my next question. Don't answer.... I'm asking myself. I like to see the material from your area and how it looks finished. I would pick that stone up now. Sometimes when I am in a new area I will take different things home to see how they polish for the next time i go. Liking how the wire wrapping is going. The groovy machine is working great. |
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Post by toiv0 on Apr 15, 2017 21:29:49 GMT -5
I was at the local pit today and found a few small pieces of that material, I would have never picked it up if I didn't see it here. Thanks ziggy. One of the contractors came in and looked at what I collected and asked me what kind of stone it was....I couldn't remember so I told him it was ziggy stone. So it will be renamed in my fifedom as Ziggystone. Thats all I have to say about that. |
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Post by tims on Apr 17, 2017 1:20:04 GMT -5
That's pretty stuff. However you cut the grooves it does a nice job of not chipping out.
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Apr 17, 2017 9:46:11 GMT -5
That's pretty stuff. However you cut the grooves it does a nice job of not chipping out. I used the grooving machine my hubby built for me. There's a build thread for it in the equipment section. |
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