- W. Alfred Richardson
- The Fibrous Gypsum of Nottinghamshire
Mineralogical Magazine 1920 19 : 77-95.
[Abstract]
[PDF]
- W. Alfred Richardson
- A New Model Rotating-Stage Petrological Microscope
Mineralogical Magazine 1920 19 : 96-98.
[Abstract]
[PDF]
- Edward S. Simpson
- A Graphic Method for the Comparison of Minerals with Four Variable Components Forming Two Isomorphous Pairs
Mineralogical Magazine 1920 19 : 99-106.
[Abstract]
[PDF]
- L. J. Spencer
- Fibrolite (= Sillimanite) as a Gem-Stone from Burma and Ceylon
Mineralogical Magazine 1920 19 : 107-112.
[Abstract]
[PDF]
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