Subject ASC00010p2
The Quarterly journal of the Geological Society of London.
v.59 (1903), Page 422 (1903)
Smithsonian Libraries
BHL Page 41497409
Keywords
microscopic view geology mineral besprinkled polysynthetic twinning dichroic chlorite crystal Mineral Phyllite Clinochlore Trewassa Davidstow Tintagel Cornwall phyllite clinochlore Trewassa Davidstow