Author Topic: Malachite poisoning?  (Read 16791 times)


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Malachite poisoning?
« on: April 22, 2009, 11:07:44 PM »
Recently I spent some hours working malachite into cabochons for jewellery.  I worked on a water grinder, and noticed that my hands were covered in a rather greasy black film.  After a couple of hours I also noticed that I was becoming short of breath, rather 'chesty', coughing and my nose was running.  when I blew my nose I noticed, that despite the fact that all my work was under water, I had collected a lot of black inside my nostrils.  I have since checked the Internet and found that there has been other cases of Malachite or Copper sulphate poisoning when working this stone.  Can anyone throw more light on this problem?  I intend to use a mask and rubber gloves in future... is this the answer?  Luv & kisses, Patrick.


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Re: Malachite poisoning?
« Reply #1 on: April 22, 2009, 11:42:15 PM »
Yup, you should definitely wear a mask when working with Malachite,
 tiger eye(Asbestos) and shell products - even tho they're wet, and don't forget to clean the residue from your equipment afterwards.
Keep em comin!!!


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Re: Malachite poisoning?
« Reply #2 on: April 23, 2009, 08:22:22 AM »
Ugh. I remember copper poisoning.  Swallowing a little is hard to avoid with your nose and eyes running. It is a BAD eye irritant.   In the stomach the basic copper carbonate becomes the very soluble cupric chloride. Use gloves, a respirator and good ventilation and clean the equipment after use.

Many years ago, my town began chlorinating the water supply.  All the harmless black copper oxide in everyones' water pipes suddenly decided to dissolve, and the whole town got sick with a peculiar type of anemia.

It's not a DEADLY poison like arsenic, but they DO use copper flake paint on boat hulls to kill barnacles, so how good can it be for us?

"If you can taste it or smell it, it's hurting you" is a general phrase that covers most common hazards, though there are a lot of odorless, tasteless ones around.


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Re: Malachite poisoning?
« Reply #3 on: April 23, 2009, 11:57:10 AM »
Wow Patrick,

I heard about this many years ago, I never heard of it happening to anyone, just that it does.

So please take precautions and be careful as we would like you around for a few more decades to come.

Take Care,
Deb  ;D  :-*  beers
Ron and I have an Appointment to do some Laps ;) ;D


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