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Post by Ron Donna on May 31, 2004 11:06:14 GMT -5
Hi all.. New to rock polishing/tumbling. My manual says to use stones/rocks of similar hardness. I am wondering if anyone can help on hardness of petrified palm wood. I'm sure it's harder than regular petrified wood, but wondering how it comapres to my 'gravel-type' rocks I am currently polishing. And, would you polish petrified wood and palm wood together? Anyone have any suggestions. As you can see, we are new to this. Thanks Ron & Donna
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Post by cookie3rocks on May 31, 2004 18:35:59 GMT -5
I'm new, but petrifided wood is about a 7. You believe palm would be harder? Just curious, why is that cookie
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duke
noticing nice landscape pebbles
Member since May 2004
Posts: 77
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Post by duke on May 31, 2004 18:54:18 GMT -5
Cookie..I think petrified palm wood usually is more agatized and so probably harder than reg petrified wood. If anyone else knows for sure, let me know. I have been wrong before.. ;D.. I posted the topic, but I have since registered, so that's why the diff name. Thanks for the reply.
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bwalters
has rocks in the head
Member since March 2004
Posts: 557
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Post by bwalters on May 31, 2004 19:36:24 GMT -5
UH-OH! I may be making a terrible BOO-BOO! I've currently got pet. wood running in my 15 lb'er, but there is also some palm wood and golden wood in there, too.
I am really interested in the answer to this question!
Silly me...I thought that pet. wood was pet. wood...same hardness, but of course, I'm too new at this to really know. I was just guessing (and hoping)!
Welcome to the board Ron and Donna! BE
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duke
noticing nice landscape pebbles
Member since May 2004
Posts: 77
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Post by duke on May 31, 2004 20:00:50 GMT -5
Hi bwalters My somewhat limited experience, has led me to observe that 'some' pet wood, has varying degrees of hardness...usually, the 'rind' (outside) is usually softer and some parts inside, may even be agatized??? ..whereas palmwood, usually always seems to be more agatized...but like I said, that's just my seat of the pants experience. Maybe someone will know 'Moh' about it and will let us know?.. ;D..I know some reg pet wood is probably just as hard as palm wood...but, saying all that, the batch I am tumbling now has reg 'wood' and palm wood..so we'll find out..let me know how yours turns out and I'll do the same. Thanks for the reply duke (Ron & Donna)
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James
freely admits to licking rocks
Member since October 2003
Posts: 876
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Post by James on May 31, 2004 20:33:32 GMT -5
...Millions of years ago...when the dinosaurs once roamed... tree's fell, got buried in sediment and submerged in water...the minerals in the sediment then replaced the cellulose in the wood...
The primary mineral of replacement was chalcedony. In other words agate and/or jasper. The hardness of agate and jasper is 6.5-7. Petrified Palm is a form of petrified wood. You can tumble them both together. You could even have agate, petrified wood and jasper all in the same barrel for that matter. They all have the same composition.
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bwalters
has rocks in the head
Member since March 2004
Posts: 557
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Post by bwalters on May 31, 2004 20:37:28 GMT -5
..."know 'MOH' about it"...You Dukes are just TOO funny! ;D
BE
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bwalters
has rocks in the head
Member since March 2004
Posts: 557
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Post by bwalters on May 31, 2004 20:42:51 GMT -5
James. So pet. wood, regardless of what it is called, is the same hardness? BE
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James
freely admits to licking rocks
Member since October 2003
Posts: 876
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Post by James on May 31, 2004 20:46:56 GMT -5
The hardness varies between 6.5 and 7. Not a signifcant difference. That goes for all form of chalcedonies; Wood, agate, jasper, onyx etc...
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Post by cookie3rocks on May 31, 2004 20:51:20 GMT -5
Nice to know. Thanks James
cookie
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bwalters
has rocks in the head
Member since March 2004
Posts: 557
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Post by bwalters on May 31, 2004 21:32:03 GMT -5
Thanks, James. You made me feel better about the rocks I'm currently tumbling!
I'll let y'all know how they turn out.
BE
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Post by rockyraccoon on May 31, 2004 21:56:22 GMT -5
me too! i threw some that looks like bone slices and some other stuff that i don't have a clue what it is.
kim
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Canard
off to a rocking start
Member since May 2004
Posts: 10
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Post by Canard on Jun 1, 2004 19:31:13 GMT -5
In addition to "agatized wood", I have seen reference to "opalized wood." In my vast 3 hours experience collecting petrified wood, I believe the "rind" referred to above is in fact massive opal, which is rather soft. We have a number of pieces that seem to have the opal on the outside and agate on the inside. The bits that we are tumbling now have quickly shed the opal outside, and all that is left is the agate.
What we have is some kind of non-palm, deciduous wood.
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