THE COLLECTION OF MINERALS 



he and Rhodochrosite specimens furnish a Long display of forms 

 and colors Desk Cases 8 10, Wall Cases 1. J. K. 0). 



The Silicates embrace the larger number <»t" mineral species 



and arc the il components of the crystalline n>cks. They 



unions of basic elements (the oxides of various metals) with 



the several forms of silicic acid. The group is subdivided into 



AZURITE FROM BISBEE, ARIZONA 



Anhydrous and the Hydr and 



broken up into smaller gr imi- 



larity of their men another in regard to composition, 



liti 



••Id- 

 le Am] (Inl- 

 and • 



