THE MINERAL COLLECTOR. 



329 



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THE MINERAL COLLECTOR 



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Address all correspondence to Arthur Chamberlain, Editor, 56 Hamilton Place, New York City 



Some Beautiful and Interesting Min- 

 erals. 



Part I. 



The editor of The Guide; to Nature 

 recently spent a very enjoyable half 

 day in the department of minerals at 

 The American Museum of Natural His- 

 tory, New York City. Time can be 

 spent to excellent advantage in this 

 department — not only to the lover of 

 nature but of the beautiful. 



A few photographic souvenirs were 

 brought away to be shared, in two arti- 



I. Chalcopyrite and Quartz, Redruth, 

 Cornwall, Eng. 



The specimen here shown is a very 

 handsome one ; it measures about four 

 by seven inches, and shows tetrahe- 

 drons of chalcopyrite prettily arranged 

 with white quartz crystals. The larg- 

 est of the chalcopyrites is one inch in 

 diameter and has a raised rim of 

 crystal growth around two sides. Most 

 of the crystals are somewhat tarnished, 

 but this gives them added beauty, as 

 they exhibit a pleasing combination 



1. CHALCOPYRITE FROM REDRUTH, CORNWALL, ENGLAND. 



cles, with the readers of this maga- 

 zine. The descriptions were written 

 by Mr. Alfred C. Hawkins, a most en- 

 thusiastic student and admirer of min- 

 erals, who is connected with the de- 

 partment which has been brought to 

 a high degree of excellence by the cura- 

 tor, Mr. L. P. Gratacap. To him this 

 magazine is gratefully indebted for 

 various courtesies. 



of purplish reds, greens, blues, and, 

 in portions that are not tarnished, 

 fresh yellow surfaces. Where frag- 

 ments have been broken from the 

 crystals there are flashes of the typi- 

 cal bright brass-yellow of chalcopy- 

 rite. 



The matrix is a slaty or cherty sili- 

 ceous rock. The quartz crystals, which 

 are numerous, are long, prismatic, 



