Parallel Growth	Phaneritic	Pre-Equilibrium Approxima...
Paramorph	Phase-Composition Diagram	Pressure Experiments
Parting	Phase Diagram	Promethium
Partition Coefficient	Phosphate	Protein
Pauling's Rules	Photodissociation	Pseudomorph
Pegmatite	Photodissociation Constant	Psiolomelane
Penetration Twin	Photosensitization	Pyralspite Garnet
Peptide Bond	Physical Property	Pyrite
Periclase	Pi Bond	Pyrognomic
Peridot	Plagioclase	Pyrolusite
Peridotite	Plutonic	Pyrope
Period	Polar Reaction	Pyroxene
Periodic Properties	Polarization Spectrum	Pyroxenoid
Periodic Table	Polymorph	Pyroxferoite
Perovskite	Polysynthetic Twin	Pyrrhotite
Perovskite Structure	Polytropism
pH	Polytype