unclestu
Cave Dweller
WINNER OF THE FIRST RTH KILLER CAB CONTEST UNCLESTU'S AGUA NUEVA AGATE
Member since April 2011
Posts: 2,298
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Post by unclestu on Jan 17, 2014 19:00:32 GMT -5
The slab of Pietersite that I won on Ebay arrived. Having never worked with Pietersite before I was wondering if there are any special considerations one must take into account when cabbing this material. Thanks Stu
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Jan 17, 2014 19:39:03 GMT -5
Do not eat it. Definitely do not eat it. Hard on the teeth.
Kidding aside, I too await knowledgeable replies.
Nice piece, BTW
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Post by mohs on Jan 17, 2014 19:49:23 GMT -5
I await Paulite & Maryite to chime in MOSTLY
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Post by frane on Jan 17, 2014 20:28:25 GMT -5
No real precautions other than the usual to protect your eyes and lungs. It is a form of chalcedony rather than a quartz. Even so, in my own experience, the lighter blue can often undercut so work with a light hand. Sometimes the fibers that cause the beautiful Chatoyance will not be firmly cemented in the stone and pull out right as you are almost finishing. Just take it slow and easy and you should have some real beauties. Fran
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barclay
has rocks in the head
Lowly Padawan of rocks
Member since November 2011
Posts: 510
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Post by barclay on Jan 17, 2014 20:31:41 GMT -5
Those lovely blue fibers are tremolite asbestos. Sanding them releases the fibers even if you use water. Grinding any form of asbestos is a really bad idea in my book. I used to issues notices of violation to people who removed asbestos from buildings improperly. While there is an OSHA air clearance standard for asbestos fibers, there is no amount of asbestos fibers that has been declared "safe".
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gemfeller
Cave Dweller
Member since June 2011
Posts: 3,892
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Post by gemfeller on Jan 17, 2014 21:09:38 GMT -5
I await Paulite & Maryite to chime in MOSTLY I don't mean to puff up their CV's but didn't they specialize in cutting Dragonskin Jasper?
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unclestu
Cave Dweller
WINNER OF THE FIRST RTH KILLER CAB CONTEST UNCLESTU'S AGUA NUEVA AGATE
Member since April 2011
Posts: 2,298
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Post by unclestu on Jan 17, 2014 21:33:38 GMT -5
I use a resperator when I cab as well as eye protection. What I was more concerned about was deaaling with the chatoyant areas of the slab. I was wondering if there are any special instructions about orientation such as with Labradolite or fire agate or certain types of OB. Thanks Stu
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Post by mohs on Jan 17, 2014 21:49:41 GMT -5
Don’t be puffing no pietersite No no no we saw what happened in the Sixties Mohs
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Post by deb193redux on Jan 17, 2014 22:00:04 GMT -5
light touch to avoid breaking.
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