Chlorine smell from clay water ?
Posted 16 February 2013 - 04:28 PM
In processing the clay to remove sand & gravel - and in throwing it - I've noticed that there is a distinct chlorine smell released from the water used.
I'm using regular city tap water, which I know has chlorine in it - but when I mix my clay into the water, it releases a very strong chlorine smell - like an over-chlorinated swimming pool. I first noticed it when liquifying the clay to extract excess sand. Today, I was throwing some of this clay and noticed the same smell coming from my throwing water. (I was throwing at a different location, with a different municipal water source.) I've never noticed this with the commercially prepared clay bodies I've used.
Would love to hear ideas as-to what might be in the clay that is triggering the release of chlorine from the water.
(Don't know if it's related, but there is also a dark, oily substance embedded in the clay - that swirls to the surface when I use a drywall 'mud' mixer to blend it to a slip consistency for straining out sand & gravel.)
Posted 16 February 2013 - 09:21 PM
Posted 20 February 2013 - 10:15 AM
It might be a good idea to send a sample out to be tested-just to be on the safe side. You never know what it out there if the deposit is anywhere near a road or old mine site. Too many materials can be absorbed in to the body from the skin.
Posted 01 March 2013 - 09:58 PM
(Hmm... I thought the forums were set up to send me an email notice of replies... maybe I've got something set up wrong - but I haven't had a chance to re-visit since posting, and didn't know anyone had responded.)
I'm digging in a creek-bed, at bottom of a fairly steep hill. Area is residential. Was all farm-land until late 1950's, then gradually developed into residential - but still mostly wooded immediately adjacent to stream. Theere has always been some clay visible along the creek - but this particular deposit has been recently exposed by bank erosion from the stream. As far as I know, there has never been any industrial activity or landfill adjacent to or upstream from the site - and the bank where I'm digging is where my parents have lived since 1957, in a house that was built in the early 1920's.
Posted 01 March 2013 - 10:07 PM
Any recommendations where to send for (free) testing ? I've considered picking up one of those DIY lead test kits from a hardware store, but wouldn't know what to test for other than that.
Posted 01 March 2013 - 11:06 PM
Posted 02 March 2013 - 07:05 AM
Dry Ridge Pottery