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Gemstone Conglomerate viewing stones

Posted: February 15th, 2016, 2:36 pm
by fossil finder
These pieces of ceramic-like conglomerate containing quartz, petrified wood, carnelian, jasper and other chalcedony species were found recently west of the tablelands. The first stone is about 400mm tall and is very heavy.
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The second is a triangular plate about 350mm x 350mm x 80mm. Well before the stones were welded together by earths forces they were waterworn over a very long period of time. Just consider the waterworn petrified wood that was once part of a tree in a ancient landscape. Sometime after it died and was fossilized it ended up in a river tumbling until rounded before finally being pressure cooked with other stones into a gem conglomerate.
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Re: Gemstone Conglomerate viewing stones

Posted: February 15th, 2016, 3:25 pm
by wattynine
FF, gotta say it, Awesome mate you keep bringing them out.
If I may ask what is your technique for presenting them all so "cleanly", what or how are you polishing with?
They all submit a certain sheen to them.
Watty

Re: Gemstone Conglomerate viewing stones

Posted: February 16th, 2016, 5:21 am
by fossil finder
Cheers wattynine

These rocks had little preparation as they were laying on a gravel bed of simliar material. Even the matrix that adheres them together comprises glassy stones finely ground. I usually soak stones in concentrated dishwashing water for a few days before scrubbing them with a stainless steel toothbrush like brush for cleaning auto parts etc. If rock has a sooty mouldy surface I hit it with bleach.
After the stones completely dry I rub them over with 100% pure coconut oil I got from the local pharmacy. It is highly viscous, has no scent and gives a nice sheen without ending up a greasy mess. I don't oil porous rocks

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