abundance_earths_crust
abundance_human
abundance_sun
abundance_universe
atomic_mass
atomic_radius
atomic_volume
boiling_point
brinell_hardness
bulk_modulus
chemical_group
covalent_radius
crystal_radius
crystal_structure
curie_temperature
density
discovery_year
discoverer
economic_importance
electrical_conductivity
electrical_resistivity
electronegativity
end_of_life_recycling_input_rate
enthalphy_of_fusion
enthalphy_of_vapourisation
heat_capacity
ionic_radius
magnetic_group
magnetic_susceptibility
melting_point
nat_syn_group
location
poissons_ratio
shear_modulus
speed_of_sound
supply_risk
thermal_conductivity
thermal_expansion
valence_electron_potential
van_der_waals_radius
vickers_hardness
youngs_modulus