Comments on: Labradorite at Canadice Lake? http://www.rocks-gemstones.com/labradorite-at-canadice-lake.html Beginning Rockhounds Thu, 20 Nov 2008 21:12:47 +0000 http://wordpress.org/?v=2.5 By: Mark http://www.rocks-gemstones.com/labradorite-at-canadice-lake.html#comment-696 Mark Fri, 14 Nov 2008 08:54:42 +0000 http://www.rocks-gemstones.com/?p=24#comment-696 http://www.cst.cmich.edu/users/dietr1rv/anorthosite.htm That page has a nice of photo of some labradorite cobbles found on a Lake Erie beach, before and after tumbling. Those rough cobbles look like rocks you might find in the Adirondacks, the High Peaks are composed of that anorthsite. http://www.cst.cmich.edu/users/dietr1rv/anorthosite.htm

That page has a nice of photo
of some labradorite cobbles found on a Lake Erie beach, before and after tumbling. Those rough cobbles look like rocks you might find in the Adirondacks, the High Peaks are composed of that anorthsite.

]]> By: Mark http://www.rocks-gemstones.com/labradorite-at-canadice-lake.html#comment-693 Mark Fri, 14 Nov 2008 08:29:04 +0000 http://www.rocks-gemstones.com/?p=24#comment-693 One more thought, look in creeks or along a beach if you can. The water really brings out any flashes of color. That's how I found my pieces, keeping a weather eye out when I was by water up in the Adirondacks. One more thought, look in creeks or along a beach if you can. The water really brings out any flashes of color. That’s how I found my pieces, keeping a weather eye out when I was by water up in the Adirondacks.

]]> By: Mark http://www.rocks-gemstones.com/labradorite-at-canadice-lake.html#comment-691 Mark Fri, 14 Nov 2008 08:20:00 +0000 http://www.rocks-gemstones.com/?p=24#comment-691 Hey Rob, I'm going to go ahead and guess that it's glacial till or cobbles. Check out this photo of labradorite found on a lake Erie beach , http://www.mindat.org/photo-85505.html . I've got a few chunks of labradorite from the Adirondacks, some are almost pure, some are the anorthsite with labradorite floating in the groundmass, you can see the blue flashes when you tip it. I'd like to find some of those cobbles and tumble them, they do look beautiful. I can't imagine a bedrock source for them in Candadice, although there are kimberlite dikes, the kind of rock that can contain diamonds!, around Ithaca and Syracuse, they cut through the sedimentary rock, emplaced in the Jurassic, if I recall correctly. Labradorite would never be found in those though. I live on the east side of Rochester, nice to know there's other people interested in this stuff around here, cheers! Hey Rob, I’m going to go ahead and guess that it’s glacial till or cobbles.
Check out this photo of labradorite found on a lake Erie beach , http://www.mindat.org/photo-85505.html . I’ve got a few chunks of labradorite from the Adirondacks, some are almost pure, some are the anorthsite with labradorite floating in the groundmass, you can see the blue flashes when you tip it. I’d like to find some of those cobbles and tumble them, they do look beautiful. I can’t imagine a bedrock source for them in Candadice, although there are kimberlite dikes, the kind of rock that can contain diamonds!, around Ithaca and Syracuse, they cut through the
sedimentary rock, emplaced in the Jurassic, if I recall correctly. Labradorite would never be found in those though. I live on the east side of Rochester, nice to know there’s other people interested in this stuff around here, cheers!

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