harley & ryder Posted July 31, 2011 Share Posted July 31, 2011 could some one please tell me what this type of stone this is Quote Link to comment Share on other sites More sharing options...
GeoJack Posted July 31, 2011 Share Posted July 31, 2011 rock candy? Quote Link to comment Share on other sites More sharing options...
adam Posted July 31, 2011 Share Posted July 31, 2011 Looks like calcite.....Heres a couple of pieces from california Quote Link to comment Share on other sites More sharing options...
harley & ryder Posted July 31, 2011 Author Share Posted July 31, 2011 that calcite dose look a bit like mine but what i found is all geometrical some are triangle wile others are sqare, pentagon and octagon and have corisponding rings of clear brown and black it is found on the surface all weatherd and large vains running several yards with thikneses of 1/8" to 4" wide in riolite the pic is one i polished thanks for the help Quote Link to comment Share on other sites More sharing options...
Johnno Posted August 1, 2011 Share Posted August 1, 2011 Just throwing a guess out here. A banded chert Quote Link to comment Share on other sites More sharing options...
Goldfinger Posted August 1, 2011 Share Posted August 1, 2011 A simple test for calcite is to put a drop of vinegar on the specimen. You may see some fizzling but it will not be a vigorous fizzle. More like a slow one and it could take a few seconds to develop since it's a weak acid.. Should you have some hydrochloric acid, it will fizzle vigorously. If it doesn't fizzle it all, it's probably some type of quartz.My guess would have been banded agate of some type but the shapes make no sense at all. :twocents: Steve Quote Link to comment Share on other sites More sharing options...
azdave35 Posted August 1, 2011 Share Posted August 1, 2011 see if you can scratch it with the tip of your knife...if it scratches it...its a calcite...if not its silica Quote Link to comment Share on other sites More sharing options...
harley & ryder Posted August 2, 2011 Author Share Posted August 2, 2011 it dose scrach with a knife and is real easy to polish i have looked up several typs of calcite and have not found any that mach the pattern maybe i found a new kind Quote Link to comment Share on other sites More sharing options...
harley & ryder Posted August 2, 2011 Author Share Posted August 2, 2011 here it is in raw form Quote Link to comment Share on other sites More sharing options...
adam Posted August 2, 2011 Share Posted August 2, 2011 Thats a pretty cool vien, and it has neat inclusions/minerals.....Heres a couple more calcites ....They can form many many different combinations of shapes Quote Link to comment Share on other sites More sharing options...
harley & ryder Posted August 2, 2011 Author Share Posted August 2, 2011 thanks for the info and the complement i am loven the cali desert summer once you get used to 120 no other weather bothers you i plan to make some nice jewelry with it i will have plenty to get rid of to Quote Link to comment Share on other sites More sharing options...
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