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Old 12-21-2016, 04:15 PM
Pete VanderLaan's Avatar
Pete VanderLaan Pete VanderLaan is offline
The Old Gaffer
Join Date: Apr 2002
Location: Chocorua New Hampshire
Posts: 20,506
Pete VanderLaan is on a distinguished road
Most of those opals again call for bone ash 21 which was the real deal, a greasy bone ash immortalized by Robert Held at the 1968 NCECA Conference. It drifted around Penland for some years and gradually slipped into the sunset as there was this on weird truckload and no more. It came originally from Standard Ceramic Supply. It needed real heat to get it to not form Aphetite crystals as bi as your head.
Dudley apparently has a rather large stash of it but you would have to buy the whole thing. It was a lot, as in drums. I'll ask about it again since he approached me to help dispose of it at a tidy profit. I wouldn't recommend it. I think STP ( sodium tri polyphosphate) works better. What makes Dave's opal work so well is the strontium replacing calcium
Where are we going and why am I in this basket?
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