48 KEMP'S ORE DEPOSITS. 



Thus under irregular deposits it is a matter of extremely small 

 classificatory moment whether an ore body is recumbent or vertical. 

 Otherwise the scheme is excellent, and its influence can be traced 

 through most of those that are of later date. The original draft 

 came out in the German in 1859. All the others are from treatises 

 on mining, in which this subject plays a minor role, and indicates 

 the tendency, referred to above, of mining engineers, when writing 

 theoretically, to imagine certain fairly definite forms, which are to 

 be exploited. As previously remarked, however, considering the 

 uncertainty of ore bodies and their variability in shape, it is here 

 argued that the genetic principle might better take precedence. 

 Several of the German terms are difficult to render into English 

 mining idioms, as for example, Stock, Butzen (Putzen), Nester, and 

 Nieren. 



1.06.08. C. Schemes, Partly Based on form, Partly on Origin. 



(10) 



J.. D.Whitney, Metallic Wealth, 1854. 



I. Superficial. 

 II. Stratified. 



(a) Constituting the mass of a bed or stratified 



deposit. 



(b) Disseminated through sedimentary beds. 



(c) Originally deposited from aqueous solution, 



but since metamorphosed. 

 III. Unstratified. 



A. Irregular. 



(a) Masses of eruptive origin. 



(b) Disseminated in eruptive rocks. 



(c) Stockwork deposits. 



(d) Contact deposits. 



(e) Fahlbands. 



B. Regular. . 



(/) Segregated veins. 



(g) Gash veins. 



(h) True or fissure veins. 



J. S. Newberry, School of Mines Quarterly, March, 1880, 



May, 1884 

 I. Superficial. 



