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Posted in response to Non-siliceous from tony goffe on November 21, 2012 at 01:40:24:

Re: Non-siliceous

Hi Tony

At Agate Creek in Australia we get weathered agates like this, the pink ones are particularly susceptible to this, very powdery and delaminate between the layers. They have very nice alternating white and pink bands, quite pretty and very popular with the girls, when you can get a good one. We do also get Calcite pseudomorphs inside agates, you cut a nodule open and can clearly see large Calcite crystals except they have been dissolved and agatised. Also common is very very small flakes of Calcite inside some Agates, usually the greeny yellow or lemon yellow ones, these agates fluoresce quite well due to the Calcite and polish up superbly.

From Paul - November 23, 2012 at 23:57:56
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Message: 70544



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