702 W. N. Benson — Origin of Serpentine. 



Fig. 1. 



Gheiss> 

 flmf>hibolire 



&erp<?nhne 

 LenNcular PendoHh^ 

 J? 

 MafcS^e PendohTe 



Schibhjse PeridcHl-e 



Masaixe peridoKI-6 

 Nephrite 



SerbenKne 

 Nephrite 



UnWtolarPeridohl-e [x- 



Moss'we PeridoNh? 

 Analysis, S-53-J£ IL^ 



Nebhnle. 



Serbenrine 



T*lc 6vr bonah? ftedk 

 flmphtbolilT 



Fig. 1. Part of geological section along the axis of the St. Gotthardt 

 Tunnel (after Stapff, 1878) with detailed enlargement of part of same 

 after Schneider (1912), based upon Stapff 's observations. 



Fig. 2. 







Fig. 2. Map of the serpentines, etc., of Gigestafel near Andermatt. 

 (After Schneider, 1912.) For complete analyses, see original paper. 



nassive Lenhcular 

 Gne»s* Peridofite Pendente 



Schistose 

 Pendohif'e 



"Talc- Carbon 



Serpentine - c*Ve "KoxK 



