Graphite amine is well characterized in the literature. I advise you to do the following. Many typical diffraction patterns will be accessible for a specific crystal structure of a chemical or element in the data base. The conditions under which the diffraction data (JCPDS) of the samples were taken are also significant when trying to compare your own data with the standard one. The published data might be the most useful for comparison if your experimental conditions are similar. So you have to be careful.