.">42 Palache and Warren- — Chemical Composition and 



a powerful lens. Aside from a slight stain in a few crystals, 

 the only impurities visible under the microscope were minute 

 adhering grains of anatase and aegirite, hardly amounting to 

 more than a trace. 



A partial analysis was also made on a few carefully selected 

 crystal fragments of parisite from Muso valley taken from the 

 mineral collection of Harvard University, to serve as a check 

 on the earlier analyses made by Warren on crystals of the 

 Muso mineral from the Brush collection, in New Haven, Conn. 





1 



2 



3 



4 



5 



6 



7 



8 





Mon- 



Muso 



Muso 



Quincy 



Muso 



Synchi- 



Synchi- 



Cordy- 





tana 



1899 



1910 



1910 



Damour 



site 



site* 



litef 





1899 









& 



Fink 



Mauze 



lius 





Wa 



rren 



anal 



yst 



Deville 





Green- 

 land 





Spec. Gr. 



4-128 



4-302 



4320 



4-358 



3-902 



3-900 



4-358 



C0 2 



22-93 



24-22 



24-34 



24-16 



23-48 



26-54 



25-99 



23-47 



Fluor, 



5-90 



. 6-82 





6-56 



5-55 



5-82 



5-04 



[4-87] 

 23-72 



Ce 2 3 



26-14 



30'67 



29-92 



30-94 



44-21 



28-14 



21-98 



(LaDi) 2 3 



. 28-46 



29-74 



28-75 



27-31 



18-00 



22-88 



28-67 



25-67 



Yt 2 3 



tr. 



tr. 





tr. 





1-23 



1-18 



tr. 



ThO a 















•30 





Fe 2 3 



•80 



•25 





•32 











FeO 















•11 



1-43 



CaO 



10-98 



10-70 



11-50 



11-40 



10-10 



17-13 



16-63 



1-91 



SrO 









tr. 









I 



BaO 

















17-30 



Na 2 



•69 



•20 



•30 



■30 





•19 







K 2 



■19 



•10 



■22 



•20 





•12 







H 2 



•26 



•10 





tr. 







2-10 



•80 



Gangue 



6-13 

 102-48 



(diff.) 





1-02 









2-58 





10265 



102-21 



101-34 



102-05 



102-00 



102-05 



= 2F. 



2-48 



2-87 





2-76 



2-34 



2-45 



2-12 



2-05 



Totals 



100-00 



99-78 



9935 



99-00 



99-60 



99-88 



100-00 



* Material somewhat altered and impure. H 2 2 - 10 ; 1'56 expelled at 100°. 

 f Material scanty, impure, and perhaps slightly altered. 



The molecular ratios derived from the above analyses are as 

 follows : 



C0 2 



E 2 3 CaO or CO a F. E 2 O s CaO 



1. Montana, 



2. Muso, '99, 



3. Muso, '10, 



4. Quincy, 



5. Muso, (D. &D.)— 



6. Synchisite, 

 Flint : 



7. Synchisite, 

 Mauzelius : 



8. Cordylite, 



0-550:0-310: 0-166: 0-196 =3: 1 

 •359 : -183 : -191 =3:1 

 •178 : -203 = 3 : 

 •178 : -205 =3:1 



•550 

 •553 

 •549 

 •553 

 •603 



•345: 

 •292: 

 •306: 



•187: -180 

 •160 : -306 



•590: -265: -189: '298 

 •533 : -256 : -181 : -148 



= 3:1 



•79: 

 •96: 1 

 

 •88: 

 65: 1 

 •52 : 

 02: 1 

 •34: 

 78: 1 

 44: 1 



96: 1-13 



01: 

 97: 

 97: 

 05: 

 79: 

 06: 

 96: 

 22 : 

 01: 



1-04 

 1-10 

 1-11 

 1-01 

 1-52 

 2-02 

 1-56 

 1-00 

 1-00 



