pacchardon
off to a rocking start
Member since August 2015
Posts: 22
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Post by pacchardon on Apr 13, 2016 10:21:28 GMT -5
I just purchased some tumbling rough advertised as malachite with agate. Since there is such a large difference between the hardness of the two minerals any advice on how to tumble it would be appreciated.
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Post by Drummond Island Rocks on Apr 13, 2016 11:29:29 GMT -5
Malachite is soft and can be finicky. Mixing with agate in the later stages sounds like a bad plan. Do you have a picture or can you post a link to the listing you purchased it from?
Malachite is a 4 on the mohs scale and agate is a 7
Chuck
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Mark K
Cave Dweller
Member since April 2012
Posts: 2,600
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Post by Mark K on Apr 13, 2016 12:20:00 GMT -5
More than likely the seller just doesn't have any idea what he is talking about. I bet when it comes, it is malachite infused with silica.
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wades
starting to spend too much on rocks
Gottfried Reiche (1667-1734)
Member since February 2006
Posts: 202
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Post by wades on Apr 13, 2016 13:49:29 GMT -5
I just purchased some tumbling rough advertised as malachite with agate. Since there is such a large difference between the hardness of the two minerals any advice on how to tumble it would be appreciated. Separate batches.
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pacchardon
off to a rocking start
Member since August 2015
Posts: 22
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Post by pacchardon on Apr 13, 2016 14:21:47 GMT -5
No, I didn't mean 2 separate lots one of malachite and another of agate but malachite in agate, both in the same rock. If it is a malachite/agate mixture the malachite would undercut, I believe is the correct term. I'm hoping that, as Mark K indicated, it isn't really agate. Here is the link www.gemsbymail.com/
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Post by Drummond Island Rocks on Apr 13, 2016 14:37:04 GMT -5
I have never seen any malachite that looked like that. Never heard of the website either. Please be sure to report back with a review.
I don't really see any option other then just tossing them in the tumbler. If it is truly malachite at a harness of 4 and agate at a hardness of 7 then you will most likely end up with a lumpy texture where the malachite eats away at a faster rate then the agate. Not the end of the world just expect it going in.
Chuck
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Post by 150FromFundy on Apr 13, 2016 15:35:44 GMT -5
Some of that rock looks like Fancy Jasper or Bloodstone without the classic red splatter. Chances are, it is a jasper with a hardness of 7. I'm betting that it will tumble and polish well. Only one way to find out for sure. Git 'er going!
Darryl.
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Mark K
Cave Dweller
Member since April 2012
Posts: 2,600
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Post by Mark K on Apr 13, 2016 19:01:28 GMT -5
I too think you are going to come out ok.
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Post by Toad on Apr 13, 2016 19:13:21 GMT -5
Definitely not malachite. But pretty.
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Post by vegasjames on Apr 13, 2016 19:16:36 GMT -5
I agree, does not look like malachite.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Apr 13, 2016 21:33:42 GMT -5
Says,its,from india. Must be bloodstone no blood.
"Heliotrope" 6.96/#
"Malachite in agate" $12.88/#
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Apr 13, 2016 21:51:02 GMT -5
That website has a huge variety. And zero proofreading!
When adding listings in their cart software, they duplicate a listing with a typo "poilsher" scores of times! Haha
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ubermenehune
spending too much on rocks
Member since March 2016
Posts: 293
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Post by ubermenehune on Apr 15, 2016 0:23:30 GMT -5
Seller is legit. I've purchased from their eBay store and the service and merchandise was good.
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