APPENDIX. 



After having brought to a close the foregoing analyses, to be embodied 

 in the present Report, I found time to examine a lew more of the speci- 

 mens collected during our first field-excursion. The results could not be 

 reported in their proper places without re-arranging and in part re-writing 

 the contents of the foregoing pages; I, therefore, give them a place in 

 this appendix. 



No. 53. Pearlspar, forming veins in the dolomite (No. 32) of the Iloppe 

 ore-bank. 



Crystallized, crystals partly interwoven, the characteristic curved sur- 

 faces eminently developed; color white to pale flesh-color; covered on sur- 

 face with a thin layer of peroxide of iron. Powder, pale reddish-white. 



Composition, dried at 220 deg. F: 



Silicates, insoluble in hydrochloric acid 0.219 



Sesquioxide of iron 1.1G8 



Carbonate of lime 55.052 



Carbonate of magnesia 43. 560 



99.999 



No. 54. Massive smithsonite, from Cury creek diggings, township 15, 

 range 5, sections 35 and 3G, Independence county. 



The ore consists chiefly of a dirty yellowish-gray and bluish-gray cellu- 

 lar mass, the cells mostly of cubical shape as if formed by the destruction 

 of crystals of galena; they are partly filled with dark-gray smithsonite, 

 forming botryoidal incrustations on the walls of the cells, partly with an 



