Hello all, A student of mine would like to use the GASP calibration made by Holdaway in 2000. We tried to contact him without much success. If anyone could send us a spreadsheet with his calibration or a secure contact to him (his most recent e-mail), we will be quite happy. thanks in advance for any help rgds Renato Dr. Renato Moraes Instituto de Geociências – Universidade de São Paulo Departamento de Mineralogia e Geotectônica Rua do Lago, 562 - Cidade Universitária CEP 05508-080 - São Paulo – SP Brazil Telefone: INT + 55 + 11 + 3091-4028 FAX: INT + 55 + 11 + 3091-4258 [log in to unmask]