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Techniques for CollectorsCleaning Wave Hill, Western Australia prehnite

11th Jun 2019 20:32 UTCStephen C. Blyskal Expert

I had the opportunity to buy some very large pieces of prehnite collected at Wave Hill years ago, before the area was claimed. All the pieces have a heavy brown coating that looks like iron stain. I am trying to clean the with Iron Out dissolved in a bucket. Only fair results so far. Any other recommendations are welcome.

13th Jun 2019 05:38 UTCStephen C. Blyskal Expert

After a couple days in the bucket with Iron Out the specimens are mostly clean. Will hit with the high pressure water gun next.

13th Jun 2019 08:31 UTCGreg Dainty

Good luck with the cleaning Stephen, one thing thou , Wave Hill is in Northern Territory, not West Australia.

5th Oct 2019 13:16 UTCColin Merriman

Hi Stephen,
                    How did you go with the removal off the brown coating? I have specimens from Wave Hill with the same stain and wanted to clean off that stain as well.


5th Oct 2019 23:54 UTCStephen Turner

While Wave Hill is in the Northern Territory the prehnite, (and amethyst, and chalcedony) are very widespread in the Antrim Volcanics which spread across the border into Western Australia.  The locality in WA is commonly given as Flora Valley but the prehnite localities are widespread and poorly located. These are remote little visited areas. You can find some additional info under the Flora Valley reference.
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