Paul Harshman on wed 12 jul 06
I have around 10lbs of green iron oxide. I purchased it from a older potter
who was quiting. the bags were from Los Angeles. I've used it where iron
oxide is called for.........
Paul
Ivor and Olive Lewis on fri 14 jul 06
Dear Paul Harshman ,
Perhaps you would oblige us by doing a small test in your next firing,
Put a small sample of your Green Iron Oxide on a plain unglazed ceramic =
tile and calcine it at your highest firing temperature, then report the =
effect you observe.
Another test that would be revealing would be to place a small amount, =
about a gram in a test tube and heat it. The effect here is to look for =
water condense song on the cooler part of the test tube.
I ask because I can find no reference to a Green Iron Oxide in the CRC =
Handbook yet there are several Green Iron Salts.
I also know there are natural clays that appear green when mined but =
change to orange of Terracotta when fired.
Thanks for any help you maybe able to give.
Best regards,
Ivor Lewis.
Redhill,
South Australia.
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