I found a copper pipe .. thought nothing about it .. almost chucked it
my GF looked closer and found this inside
she asked the Google God what it was and the reply was most likely "Han Purple"
Han purple and Han blue (also called Chinese purple and Chinese blue) are synthetic barium copper silicate pigments developed in China and used in ancient and imperial China from the Western Zhou period (1045–771 BC) until the end of the Han dynasty (c. 220 AD)
I think whoever lost this pipe must have been using an old technique
to fabricate synthetic purple pigment because from what I understand it could not be found in a natural state...
either that or the pipe was being used to transport this pigment
Any signs of an old foundry there?
Looks like what I use to use for degassing molten bronze just before pouring, the whole thing is plunged in the crucible. The copper pipe melts allowing the degas agent to be released at the bottom of the crucible.
I found this not far from a roman camp in a village
built on roman center with a busy medieval activity
in a field where I found objects and coins from celtic to more recent
and luckily with a minimum of junk...
so this could be maybe not more then 100 yrs old (probably less) judging from the pipe and cork...