chemical structure of Enamel or Dentin

[Cathy Cleland <buzzer@telomere.lanl.gov>]

Hello,

I hope you can help me. I am searching for a graphical image of the 
chemical structure of enamel or dentin. The texts I have read say that 
enamel is basically "96% (by weight) crystalline calcium phosphate, with a 
structure similar to hydroxyapatite" (Ca5(PO4)3OH). I was wondering if 
there was a chemical structure drawn with this formula? Do you have any 
references I could peruse? I am in need of something general.

Thank you in advance for your time.

Cathy Cleland