[vc_row][vc_column][ultimate_heading main_heading=”R – Glossary” heading_tag=”h2″][/ultimate_heading][vc_empty_space][/vc_column][/vc_row][vc_row][vc_column width=”1/3″][vc_column_text]Radiating
Radical
Radioactivity
Radioisotope
Radius ratio principle (Pauling’s first rule)
Raman spectroscopy
Rare earth elements
Recentrant angle
Recrystallization
Recrystallize
Reduce
Reduction
Reflection (light)
Reflection (symmetry)
Refracted light microscopy
Refraction
Refractive index
Refractive index oil
Refractometer
Regional metamorphism
Regular polyhedron
Relative hardness
Relief
Remnant heavy isotope
Reniform
Reserves
Residual (mineral)
Residual (phase)
Residuum
Resinous
Resistate
Retardation
Reticulated
Retrograde metamorphism
Retrograde reactions
Rhomb
Rhombohedral (point groups)
Rhombohedral plane lattice
Rhombohedron
Rhyolit
Rietveld method
Right handed
Ring silicates
Rotation
Rotation axis
Rotational symmetry
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