76 The Ottawa Naturalist. [June 



1. Analysis of Hydronephelite from Ice river. 



2. Analysis of Hydronephelite from Litchfield, Me., U.S.A. 



3. Analysis of Ranite from the Island of Laven. 



(also called Lamo) Lang-esund fiord, Norway. 

 Brogger has shown that the last mentioned mineral include^ 

 part of what has passed under the name of spreustein. 



Schorlomite, a mineral closely analogous in composition to 

 garnet and which may be regarded as a titanium-rich rr.elanite, 

 also occurs at the Ice river locality in association with these 

 nepheline rocks. The mineral, according to Mr. F. G. Wait, of 

 the Geological Survey of Canada, " is massive without cleavage ; 

 the colour velvet-black, here and there tarnished blue, and occa- 

 sionally with pavonine tints : that of the streak, hair brown ; the 

 lustre is vitreous ; it is brittle ; the fracture is irregular, occasion- 

 ally subconchoidal ; it is opaque ; fuses quietly at 3 to a black 

 enamel ; has a hardness ot 6.5 and a specific gravity at 15.5C. of 

 3.802. Its analysis afforded him the results under i of the follow- 

 ing table : 



i 2'' 3' 48 



Si 0.2 25.77 29.24 29.08 25.66 



Ti 0.3 10.83 18.14 '^-54 22.10 



Alg O3 3.21 1.72 1.44 .... 



Feo O3 18.59 22.61 22.01 21.58 



Fe" O 



Ti O 8. 23 .... 



Mn O 0.76 1. 17 0.83 . .. 



Mg O 1.22 0.46 .... .... 



Ca O 31-76 26.25 26,79 29.78 



Sn O 0.87 0.87 .... 



100.37 100.46 99-56 99.12 



1 Analysis of Schorlomifee from Ice river. 



2 & 3 Analysis of liwaarite from Mt. liwaara, Finland. 



4 Analysis ot Schorlomite from Magnet Cove, Arkansas, 



U.S.A. 



*> Ann. Rep. Geo. Surv. Can., Vol. XII, p. 12R. 



" Ramsay & Berghell : Geol. For. Forh. Stock. Vol. XII, 1S91, p. 305. 



8 



Dana's Mineralogy. 1892, No. i, p. 448. 



