F. L. Ransome — Apatitic Minette. 339 



Norm. 

 Or 28-91 





Sal. 43-07 TTT G u 



— — = =111, Salfemane. 



Fem. 51-11 



Ne ... 7-10 







Lc 5-67 Sal.= 



= 4307 



P - 30-30 -*> Portogare. 



An ... T39 





K 0+Na 90 n w 

 — - — ' , - = — = 1. VVyomingase. 

 CaO .5 J & 



Di 22-38 



Ap ... 9-41 Fern. 



=51-11 



KO 65 " _ ,. 



2 = — = 2. Washingtonose. 

 jN a 2 w 25 



01 .„., 8-73 







Mt 6-03 







11 4-56 







H 2 0___ 3-84 







CO,.:. 1-24 







FeS„ .. -06 







99-32 



This norm, as shown above, places the rock in the salfemane 

 class, in the lendofelic or Portugare order, in the peralkalic or 

 Wyomingase rang, and in the dopotassic snbrang. It is the 

 first recorded representative of this snbrang, and as it falls 

 well within the classificatory limits of the division, washing- 

 tonose is suggested as an appropriate snbrang name. It is 

 worthy of note that the wyomingite, orendite and madnpite 

 described by Cross* from the Leucite Hills, Wyoming, are all 

 comparatively rich (139 to 1*89 per cent) in phosphoric acid. 



For comparison the norms of the two rocks standing nearest 

 to washingtonose in Washington's tablesf are given below. 



Wyomingite ( Cross). Shonkinite ( Weed mid Pirsson)- 



Or 









44-5 





Or.. 







29-5 



Lc 









10-5 





Ab . 







8-9 



Ne .... 









. 1-7 





An . 



Ne . 







1-1 

 6-2 



Ac 









7-4 













Di 









. 13-9 





Di.. 







28-9 



01 









7-9 





01 .. 







14-8 



11 









. 4-1 





Mt.. 







5-1 



Hm.... 









. 0-8 





11... 









1-4 



Ap .... 









. 4-5 





Ap . 







1-7 



* Cross, 



W. 



Igneous Eocks of 



the 



Leucite 



Hills 



and Pilot Butte, Wyo, 



this Journal (4). 



, vol. iv 



- P 



. 130, 1897. 











f Professional Paper 



U. 



S. Geol. 



Su: 



rvey No. 



14, p. 



339. 





