Henry
spending too much on rocks
Member since January 2013
Posts: 452
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Post by Henry on Sept 17, 2014 13:59:29 GMT -5
Hello everyone. Have any of you folks left the white "host rock" on a chalcedony piece to add character to an otherwise plain stone? The pieces that I have are brown without agatization...ergo humdrum. LOL
Henry
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blessed
spending too much on rocks
Member since January 2010
Posts: 329
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Post by blessed on Sept 17, 2014 20:18:32 GMT -5
I am not sure I can answer your question, but I will try. Most of the chalcedony I find here in Oklahoma is yellow or brown on the outside. If I grind all the outside off then it is white on the inside. Sometime I will find one that is white on the outside and blue on the inside. I guess the answer is yes. They do take a good shine. James
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,339
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Post by quartz on Sept 17, 2014 23:04:20 GMT -5
A lot of the pet. wood replacement limbs we find have a white coating on them, we generally leave this on and polish just the ends. Nice looking that way; less humdrum.
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Post by connrock on Sept 18, 2014 8:11:44 GMT -5
A lot of the agatized coral that James tumbles has a white "exterior" and I think it looks great after tumbling it. connrock
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Henry
spending too much on rocks
Member since January 2013
Posts: 452
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Post by Henry on Sept 18, 2014 12:01:07 GMT -5
Thanks everyone. After examining the stones, the white adds a little activity in an otherwise plain chalcedony piece(s). *Going through "medium" grit finally. Should be done in a few weeks.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Sept 18, 2014 12:25:07 GMT -5
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Henry
spending too much on rocks
Member since January 2013
Posts: 452
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Post by Henry on Sept 18, 2014 16:03:00 GMT -5
Wow James, nice! That pretty much answers my question. Out of curiosity, more-or-less, what is the "host rock" usually comprised of...or should I say, what kind of rocks are they?
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Sept 18, 2014 16:35:56 GMT -5
Wow James, nice! That pretty much answers my question. Out of curiosity, more-or-less, what is the "host rock" usually comprised of...or should I say, what kind of rocks are they? Not what would be considered chalcedony perhaps. It is silicified coral. The white is the boundary of where it stopped it's silicification and converts to cherty limestone. The outside rind is white Henry, check it out. they are always like this.
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Henry
spending too much on rocks
Member since January 2013
Posts: 452
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Post by Henry on Sept 18, 2014 16:39:15 GMT -5
Ah, so it's hard stuff. No wonder it takes such a nice polish.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Sept 19, 2014 9:10:48 GMT -5
Ah, so it's hard stuff. No wonder it takes such a nice polish. I think it has diamond dust impregnated in it
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,676
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Post by Fossilman on Sept 19, 2014 9:26:46 GMT -5
I have many agates,quartz,petwood all "chalcedony" that have white with the host rock,I just leave it on there..Thumbs up
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