1891.] Mineralogy and Petrography. 663 
Coleraine, in the Eastern Townships. When first mined it is so soft as 
to be easily squeezed between the fingers, but on exposure it becomes 
harder until a hardness of 3.5 or more is reached. It then hasa 
density of 2.514, and a composition: SiO, = 43.13; MgO = 42.05 ; 
FeO = .37; H,O = 13.88, with traces of MnO, NiO, and CaO. 
Cinnamon garnet from Ottawa county, Ont., has a density of 3.58, 
and a rose-red a/mandine from the Laurentian gneiss at Murray Bay, 
Que., has a specific gravity of 2.59. Small red spessartites,4 imbedded 
in the feldspar and: muscovite of a coarse granite vein at Villeneuve 
Mine, Ottawa county, are much heavier. Sp. gr. = 4.117. The 
composition of these is: 
SiO, Al,O, FeO, FeO MnO CaO MgO Loss 
Cinnamon aa IEA g -63 : 
Almandine 37.97 22.44 2.39 26.12 1.18 5.27 5.42 
Spessartite 36.30 19.20 10.60 -40.00° 367 W yA 
From the dump heaps of the Grant and Emerald Mines, in Bucking- 
ham, in the same county, specimens of mountain cork and mountain 
leather were obtained that yielded : 
SiO, AlO, Fe,O, FeO MnO CaO MgO Loss Sp. Gr. 
53.99 455 roe 10.99. kio 32.53. 20.26 «2-56 3-05 
Since pseudomorphs of asdestos after pyroxene are found in the 
vicinity, it is thought that the material analyzed may be of the same 
nature. Dawsonite and ifinertte occur at the Corporation Quarry, on 
the west side of Montreal Mountain, and fine chalcedony concretions 
are imbedded in the clay between Irvine and the Cypress Hills, in the 
northwest territory. The analyses of several minerals are given in a 
recent bulletin of the U.S. Geol. Survey, among which the following 
are the most interesting: (1) fefalite, from the spodumene locality at 
Peru, Me. ;- (2) sfessartite, from the Mica Mine, Amelia county, 
Va.; (3) willemmite, Trotter Mine, Franklin, N. J. ; (4) kaolin, from 
the Waterfall Mine, Gunnison county, Col. 
SiO, AlO; Fe20; pa MnO ZnO CaO NaO K,O Li,O P,O; eo e 
(1) 77.29 16.95 39 sat 
(a 35:35 20.41 2.75 1.75 38.70 ac = 
(4) 47.28 36.19 tr. 42 5I 5-74 57 8.72 
Tripiite, from a tin mine near Rapid City, S. Dak., gave: 
R ,0, FeO, FeO MnO CaO NaO P,O, H,O F SiO, Cl ae 
2.36 r07 2013 0.72 5-25 39.68 3.67 2.35 - 43 225 
ee traces of MgO,and K,O, and .13 per cent. LiO,. 
1t Can. Record of Science, October, 1890, p. 225. . 
‘16 Bull. No. 60, U. S. Geol. Survey, pp. 129-137. 

