So, who wants iron in their brick anyway?  Do you want somebody to come
along with a big magnet and steal your building in the middle of the night?
Ruth



At 10:56 AM -0500 2/14/04, [log in to unmask] wrote:
In a message dated 2/14/2004 4:08:56 AM Eastern Standard Time,
[log in to unmask] writes:

Not so sure I agree with the "not introduced" aspect... natural
formations would be erratic thus not always consistent in a run of brick.
If not introduced... then a geological question as in how come only iron
spots occur and say no quartz or other pebbles?
Iron spot brick tends to date to an era of industrialized brick
manufacture, thus mechanization of the process and a mind-set elevating
consistency.
I'm also not so sure pyrite is the culpret. I know damned well what
pyrite is. Iron is highly prevalent and available.
You don't see the brick so much so often any more... did they run out of
iron spotty clay?
Clay, with or without the measles, comes out of a hole in the ground and
should be able to be traced to point of origin.

I should think that the iron spots are the results of mixing iron filings,
or maybe teeny-weeny bits of iron filings, into the clay.

Ralph

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Ruth Barton
[log in to unmask]
Dummerston, VT

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