bgast1
fully equipped rock polisher
Member since July 2010
Posts: 1,076
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Post by bgast1 on Jan 14, 2014 0:12:29 GMT -5
I don't have a clue what this material is. If anyone can hazard a guess or knows I really would appreciate knowing. It started out as a very rough slab with lots of pits and the edges were almost rough enough that I figured it might not even be worth trying to cab at all. It turned out pretty good with only minor pitting on the edge and surface but in my opinion do not detract from the over all cab. Here's a few pictures.... Thanks for looking.
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Post by tntmom on Jan 14, 2014 0:33:03 GMT -5
Nice Bob! I don't have a clue on the ID though.
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bgast1
fully equipped rock polisher
Member since July 2010
Posts: 1,076
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Post by bgast1 on Jan 14, 2014 0:43:05 GMT -5
I know what it is now Brecciated, Opalized, Bertradite. ... Tiffany Stone.
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Post by vegasjames on Jan 14, 2014 3:10:58 GMT -5
Yes,definitely looks like Tiffany stone. Here is a post I had done over on Facebook in response to someone's use of the name bertrandite for Tiffany stone:
"Want to clarify though that the use of the name bertrandite for Tiffany stone is not really correct. Bertrandite is a singular mineral containing the toxic mineral beryllium found in numerous places around the world. Tiffany stone is a mixture of different minerals, up to 16 different minerals, found in only a few mines in the U.S. Bertrandite is just one mineral that may or may not be present in Tiffany stone. Other minerals can include fluorite, quartz, opal, dolomite, calcite, chalcedony, rhodonite, manganese dioxide, etc. I also bring this up because I received an e-mail yesterday asking about the discrepancies between the listed hardness for Tiffany stone all over the internet. I have Tiffany stone that runs from very soft and friable to quite hard and stable. Again the reason is that Tiffany stone is a mixture of minerals that include very sot minerals like the calcium carbonates to quite hard minerals such as chalcedony. For the same reason you will find Tiffany stone in quite a variety of colors and patterns."
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on Jan 14, 2014 8:43:48 GMT -5
Yes,definitely looks like Tiffany stone. Here is a post I had done over on Facebook in response to someone's use of the name bertrandite for Tiffany stone: "Want to clarify though that the use of the name bertrandite for Tiffany stone is not really correct. Bertrandite is a singular mineral containing the toxic mineral beryllium found in numerous places around the world. Tiffany stone is a mixture of different minerals, up to 16 different minerals, found in only a few mines in the U.S. Bertrandite is just one mineral that may or may not be present in Tiffany stone. Other minerals can include fluorite, quartz, opal, dolomite, calcite, chalcedony, rhodonite, manganese dioxide, etc. I also bring this up because I received an e-mail yesterday asking about the discrepancies between the listed hardness for Tiffany stone all over the internet. I have Tiffany stone that runs from very soft and friable to quite hard and stable. Again the reason is that Tiffany stone is a mixture of minerals that include very sot minerals like the calcium carbonates to quite hard minerals such as chalcedony. For the same reason you will find Tiffany stone in quite a variety of colors and patterns." There is a famous mine close to Atlanta that yields low grade beryl crystals that weigh hundreds of pounds. I believe it is just low grade aquamarine. Anyway, the military mined the crystals to make beryllium in the 40's. The metal is high temp and slick and used for canon linings. So, does gem grade beryl create toxic dust say when being ground? I am sure a cut stone is totally safe. But i am curious about the fine powder state.
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bgast1
fully equipped rock polisher
Member since July 2010
Posts: 1,076
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Post by bgast1 on Jan 14, 2014 9:02:21 GMT -5
Thanks vegasjames, I will correct it everywhere I have it listed.
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Post by rockjunquie on Jan 14, 2014 10:46:49 GMT -5
I vote tiffany stone, for sure. Nice looking one, too.
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Post by vegasjames on Jan 15, 2014 1:17:54 GMT -5
Yes,definitely looks like Tiffany stone. Here is a post I had done over on Facebook in response to someone's use of the name bertrandite for Tiffany stone: "Want to clarify though that the use of the name bertrandite for Tiffany stone is not really correct. Bertrandite is a singular mineral containing the toxic mineral beryllium found in numerous places around the world. Tiffany stone is a mixture of different minerals, up to 16 different minerals, found in only a few mines in the U.S. Bertrandite is just one mineral that may or may not be present in Tiffany stone. Other minerals can include fluorite, quartz, opal, dolomite, calcite, chalcedony, rhodonite, manganese dioxide, etc. I also bring this up because I received an e-mail yesterday asking about the discrepancies between the listed hardness for Tiffany stone all over the internet. I have Tiffany stone that runs from very soft and friable to quite hard and stable. Again the reason is that Tiffany stone is a mixture of minerals that include very sot minerals like the calcium carbonates to quite hard minerals such as chalcedony. For the same reason you will find Tiffany stone in quite a variety of colors and patterns." There is a famous mine close to Atlanta that yields low grade beryl crystals that weigh hundreds of pounds. I believe it is just low grade aquamarine. Anyway, the military mined the crystals to make beryllium in the 40's. The metal is high temp and slick and used for canon linings. So, does gem grade beryl create toxic dust say when being ground? I am sure a cut stone is totally safe. But i am curious about the fine powder state. Any silica based rock dust is a potential hazard. As for the beryllium though in beryl as far as I know the beryllium is only toxic as an elemental metal, which is not present in beryl.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on Jan 15, 2014 9:27:51 GMT -5
That makes perfect sense James. I worked in a saw shop for Scientific Atlanta and cut /sawed a lot of exotic metals including beryllium.
It was yellow, stiff like spring steel, hard and very light weight.
It was space age like metal and expensive. Back in WW2 they used a lot of it on tank and ship cannon linings.
SA made satellite stuff and it was used due to it being strong and low in weight.
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Post by vegasjames on Jan 15, 2014 16:16:51 GMT -5
That makes perfect sense James. I worked in a saw shop for Scientific Atlanta and cut /sawed a lot of exotic metals including beryllium. It was yellow, stiff like spring steel, hard and very light weight. It was space age like metal and expensive. Back in WW2 they used a lot of it on tank and ship cannon linings. SA made satellite stuff and it was used due to it being strong and low in weight. Yes, it is also used to make Ping golf clubs, which are made from a copper-beryllium alloy. Its been several decades since I really studied beryllium in depth for a project I was working on. Bu the only toxicity reports I ever ran across were from factory workers exposed to the actual metal, never from their rock sources.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on Jan 15, 2014 16:42:04 GMT -5
I am not to concerned about a lot of materials but i heard a person talking about beryllium and he said it was
nothing to take lightly. I remember it mentioned that it is used in golf clubs.
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mossyrockhound
fully equipped rock polisher
Member since January 2011
Posts: 1,280
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Post by mossyrockhound on Jan 15, 2014 17:38:09 GMT -5
Beautiful material and nice cab. For what it's worth, if it has beryllium in it I wouldn't touch it with a 10-foot pole. My dad died of beryllium poisoning and it wasn't pretty. He worked out at the Hanford plants where they were using beryllium and he evidently breathed some of the metal fumes or dust. It was an awful way to go.
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Post by pghram on Jan 16, 2014 18:22:20 GMT -5
Beautiful cab!!!
Rich
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,694
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Post by Fossilman on Jan 16, 2014 18:28:53 GMT -5
Wild colors!
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Post by frane on Jan 16, 2014 21:07:26 GMT -5
Beautiful Tiffany stone cab and it looks like a samurai in it.
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 16, 2014 21:34:45 GMT -5
Do any of us really know that is in that beautiful rock we are polishing? Someone showed me a MSDS for malachite she found on the internet which said that it is 100% copper carbonate. I asked her if the company that made the MSDS had any relationship to the piece of malachite she had. She said no. Mother nature rarely gives us 100% pure anything. Bertrandite and Tiffany Stone contain beryllium and it is a toxic metal. Just because we don't have a disease called beryllium miner's lung, like black lung for coal miners, does not mean it is safe. Beryllium is kind of rare so coming up with a population that mined the stuff is probably pretty hard. Until Love Canal they thought it was a good idea to build houses on top of a hazardous waste dump. The ancient Romans figured out that asbestos was hazardous to mine, and we didn't outlaw it in our homes until 1979. The Romans did not figure out that lining their aquaducts with lead was bad though.
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