His recognition of the importance of crystal shape is a precursor to modern crystallography, while mention of numerous other minerals presages mineralogy.
Her dissertation was the first to reflect a redirection of study in the field away from mineralogy and crystallography and towards stratigraphy and palaeontology.
In crystallography, "trimorphism" refers to the occurrence of certain forms in minerals which have the same chemical composition, but are referable to three systems of crystallization.
In crystallography fiber symmetry is an aggravation regarding the determination of crystal structure, because reflexions are smeared and may overlap in the fiber diffraction pattern.