I forgot to mention that we wrote a paper for JOH on Aluminum staining.

Modified Acidic Solochrome Azurine Stain for Video Image Analysis of
Aluminum Lines in Bone Biopsies
William E. Huffer, M.D., J.M. Zhu, M.D. and Patsy Ruegg, HT(ASCP)QIHC
The Journal of Histotechnology Vol 19. No. 2  June 1996