306 The American Geologist. November, 1897 
The following analyses of Cranberry ore are of samples 
typical of three distinguishing grades, only the first analysis 
(I) representing anything like the average properties of the 
ore as prepared for market. This was made by Mr. Edward 
Riley of London, England, from a sample taken by himself in 
the month of October 1890. The other samples, collected by 
Mr. Bailey Willis and analyzed by Mr. A. A. Blair* represent 
(II) pure magnetite, and (III) a mixture of epidote and mag- 
netite. The admixture of pyroxene and epidote is indicated 
by notable proportions of lime. In a 43-per cent, ore as used 
at Cranberr}?- furnace, seven per cent, of the iron produced is 
attributable to ferrous and ferric oxides in silicated form, 
from pyroxene and its derivative (epidote) respectively. The 
pure pyroxene according to an analysis by Mr. Blair contains 
24.01 per cent, of metallic iron. 
I. II. III. 
Silica 20.97 5.27 29.99 
Ferric oxide 47.32 62.57 25.05 
Ferrous oxide 16.45 26.68 18.93 
Alumina 2.87 1.18 10.07 
Mangaoous oxide 0.42 0.22 0.76 
Lime 10.10 1.46 11..33 
Magaesia 1.43 0.55 1.78 
Iron disulphide 0.20 0.18 
Nickel sulphide : . . 0.04 0.09 
Sulphur 0.02 
Carbonic acid 0.08 0.07 
Titanic acid 0.95 
Hygroscopic water trace 0.35 0.37 
Water of composition 0.91 0.49 1.49 
Phosphoric acid 0.007 0.024 
100.49 100.037 100.134 
Metallic iron 45.93 64.64 .32.37 
The sculpturing of the valley of Cranberry creek has been 
transversely^ through the ore belt. Its southeasterly exten- 
sion has been traced to the opposite side by means of an ex- 
cavation now fallen in. In an opposite direction its exten- 
sion is strongly indicated. Nothing has been done to decide 
the question of continuity. 
With the use of the plane table and magnetic needle, but 
with little or no help from the latter instrument, I have en- 
deavored to trace the northwest extension of the Cranberry 
ore-belt. 
*U. S. Census 1890, XV, p. 326. 
