We have treated fossil wood at CCI which was completely non-mineralized using
PEG 200 at ca. 10% - 15% v/v - and then freeze drying. Success depends on the
presence of cellulose in the wood - ours was ca. 50% cellulose 50% lignin. We
also treated delicate fossil leaves with the Parylene ,ethod which is available
in Italy as "Galaxyl" marketed by a subsidiary of Montecatini Edison. - If you
are interested we would be happy to send more information on the details of our
work
 
 
David Grattan
______________________________ Reply Separator _________________________________
Subject: Information on wood conservation
Author:  Scott Williams at CANADIAN-CONSERVATION
Date:    2/15/95 9:33 AM
 
 
 
fyi re wood arch/fossil wood conservation
______________________________ Forward Header __________________________________
Subject: Information on wood conservation
Author:  Museum discussion list <[log in to unmask]> at
INTERNET
Date:    2/14/95 9:02 AM
 
 
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From: Mauro Giraldo <[log in to unmask]>
Subject:      Information on wood conservation
X-To:         [log in to unmask]
To: Multiple recipients of list MUSEUM-L <[log in to unmask]>
 
  Dear Museum-L readers,
 
  I'm a student of University of Padova (Italy), interested in conservation
  metods and restoration techniques of  some SUBFOSSIL WOODS extracted in 1992-9
   3
  by a paleontologist excavation in Steggio location (Italy).
  These woods were well conserved and integer at the moment of discovery because
 
  sited in a clayey coat.
  At the moment they are cutted in pieces of 1 meter long and plunged in a tub
  with water and quaternary ammonium salts.
 
  I would like to know if :
 - is possible to use PEG ?
 - any specific instruments are needed ?
 - how can we conserve leaves ?
 - are there other news about wood conservation of (and where can I find then)
 ? - where can I ask about this metter (possible in Italy or in Europe) ?
 
   Thanks in advance
 
   Mauro Giraldo