250 W. EF. Hidden—Mineralogical Notes. 
found, near Pike's Peak, Colorado. A fragment tested qualita- 
gles=1 a I=129", ‘LA O= 140°—141°, Lal ov. O= 102°, Lal 
ov. [=78°—80°. 
The crystal was over one centimeter square, of a chocolate 
brown color and like wiluite in type of form. Implanted upon 
it were small crystals of similar character. There can be no 
doubt of its identity with xenotime. The prismatic (/) cleav- 
age was not observed for the reason of superficial alteration. 
_ Fayalite (?), from Colorado.—Also from the same source and 
same region as the phenacite, I have — large masses, 
uncrystallized, of a mineral which ma o be fayalite. 
The sp. grav. is 4°35, the color dark Saitinb. ibe. Slight 
evidence of cleavage in two directions. It contains silica and 
iron and traces of manganese and lime. It is fusible and 
gelatinizes with acids. 
ese characters agree pretty closely with fayalite, though 
the density is somewh at high. It was found in quartz and 
gran in “ vugs,” on Cheyenne Mountain, Sa masses of 
many pounds weight occur at one of the localitie 
Zircon, a new plane.—I have lately terre < ona bee oF 
zircon from Burgess, Canada, a very low pyramid which 
measuring gave the following results with hand goniometer: 
on J=106° to 107°, over sonnei over sy 
This ay henea! erystal was an unusually fine one and weighe 
nearly 4 gra 
Rutile. e'The old secalivy in Alexander County, N. C., at 
Johnson’s Mill (now Crouch’s) was lately re-opened by Mr. W. 
H. Lackey and yielded some very fine prisms of rutile of re- 
markable oe and polish. Some of the crystals were 1 
em. thick, an em. long and perfectly terminated with 
many bright sistas Held up to the light the crystals had the 
color of pyrargyrite. The fracture was bright conchoidal. 
The planes 1, 1-1, 1-3, 3-$, J, 73 and 7% were observed and 
measured with hand goniometer. 
Emeralds and Hiddenite, a new occurrence—In October last 
Mr. W. H. Lackey of Stony Point, N. C., discovered a new 
