photo sharing and upload picture albums photo forums search pictures popular photos photography help login
Type your message and click Add Comment
It is best to login or register first but you may post as a guest.
Enter an optional name and contact email address. Name
Name Email
help private comment
Artichoke Vinagrette | all galleries >> Galleries >> minerals > selenite crystal
previous | next
29-DEC-2006

selenite crystal

Houston Museum of Natural Science

a most curious crystal
thanks to Yves for the ID (see comment below)
to get adequate DOF, I used a composite of two 12 MB jpg files for this


other sizes: small medium large original auto
comment | share
Yves Rubin06-Apr-2007 16:42
Superb! It is called selenite, crystals of calcium sulfate (or gypsum, or plaster, yes!) They have this curious way to grow in diformed shapes through a crystallization process called twinning http://en.wikipedia.org/wiki/Selenite).
Cheers,
Yves