Subject ASC0001egq
The Quarterly journal of the Geological Society of London.
v.43 (1887), Page 474 (1887)
Natural History Museum Library, London
BHL Page 45996727
Keywords
piedmontite-schist japan piedmontite clinopinacoidal section extinction crystal twin Geology Crystals crystals crystal formation piedmontites twinning twins of rutile parallel growth twins complex crystals