Tommy
Administrator 
Member since January 2013
Posts: 12,989
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Post by Tommy on Oct 26, 2017 10:04:01 GMT -5
Have to disagree with your last sentence Tommy . I love the stuff and it's not difficult at all to cut if you can handle the messiness. It's one of my favorites and takes a brilliant all-diamond polish once the initial grinding operation's completed. If you can put up with cutting Nipomo marcasite, C of S should be no problem. In fact the Nipomo stuff is much stinkier. Fair enough - I've only cut psilomelane a couple of times and it's been a few years. On top of the mess tho, I remember finding it very challenging to get all the flat spots gone and ready for polishing - maybe it was just the piece I had. Nipomo on the other hand is dirty and stinky but overall it works a lot like a plume agate agate - the biggest concerns I found is pitting in the marcasite plumes and trying not to overwork them to the point of flaking off. |
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Tommy
Administrator
Member since January 2013
Posts: 12,989
|
Post by Tommy on Oct 27, 2017 14:54:24 GMT -5
I decided to go with the piece of Colbaltite that I got from rockjunquie a long time ago. I actually lost this piece for quite a while and only recently found it again. Native silver, Colbaltite.     |
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Post by rockjunquie on Oct 27, 2017 15:13:12 GMT -5
I've cabbed psilomelane, silver in cobaltite and marcasite. I have to say that the silver inn cobaltite was the worse. It stains like crazy, makes a floating, oilyish nasty mess and is hard to polish when it starts to get so reflective you can't see what you are doing. So, Tommy- I think you did great! I love the plumes of silver/cobaltite. Looks great. |
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Post by orrum on Oct 27, 2017 15:37:21 GMT -5
That's a bunch of silver!!! Great cab Tommy!
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Tommy
Administrator
Member since January 2013
Posts: 12,989
|
Post by Tommy on Oct 27, 2017 15:55:29 GMT -5
I've cabbed psilomelane, silver in cobaltite and marcasite. I have to say that the silver inn cobaltite was the worse. It stains like crazy, makes a floating, oilyish nasty mess and is hard to polish when it starts to get so reflective you can't see what you are doing. So, Tommy- I think you did great! I love the plumes of silver/cobaltite. Looks great. Thanks! What surprised me about it was it was still giving off black mess all the way up to the 14k wheel. Made me start to wonder if it needed to be sealed... |
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Post by glennz01 on Oct 30, 2017 22:32:28 GMT -5
Well this was really hard to photograph, the colors still look brighter and better in person, its local chalcocite with azurite and malakite. only a test of this material with more to come. preform  ![]()  |
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