﻿Clarke and Diller — Turquois from New Mexico. 211 



:72° 20' (72°); d z w=lb5° (154° 390; 



i 



w e^ adj.=165° 10' (165° 10'); 

 23' (171° 25 r ); e* P adj.=144 c 



p over e' 



w z over e^=156° 32' (156° 300; e Y z adj. = 171' 



41' (144° 400; Z P adj. = 153° 18' (153° 100; &V adj.=162° 44'; d* z over 



^=150° 44'; y % adj.=168° 0' ; zp opposite=L38° 36' (138° 250. 



61 Colorado pheDacites on amazonite (microcline) offer exactly the 

 same association as those from the Urals. It will be noticed by 

 reference to both the figures that, the face w=(% 3 ) is here shown 

 hoiohedral, whereas, ordinarily hemihedral. The face 5 2 = (f 2 ) 



1. 



presented an anomaly on one crystal in its having the appear- 

 ance of being hemihedral. This crystal also had the edge re- 

 placed between d 2 and p=.(RS/\'R) which would have the sym- 

 bol d^- Rf , or possibly c?f R~y-. This crystal gave the following 

 angles, i. e. — 



d 2 w=153° approx.; d 2 e^=139° 30'; w e* = 165° 30'; d 2 d~* =172° 30', 



.L2. 



calc. 172° 36 , -l7^°; d* _p=150° 30'; d * p = \5l° 30', calc. 157° 27'; 6* b 2 

 (hemihedral) =139° 15'." 



It seems now that specimens from this locality were first 

 shown to Mr. Whitman Cross by the finder, Mr. Hiestand, bat 

 no public announcement of their identification was made by 

 him until after the publication of my note on the occurrence. 

 (This Journal, March, 1885.) Among the last discoveries at 

 this locality were some exceptional crystals, implanted on 

 quartz crystals, that were fully l cm in diameter. One quartz 

 crystal had within it a small phenacite crystal, having bright 

 faces. 



Art. XXIII.— Turquois from New Mexico ; by F. W. Clarke 

 and J. S. Diller. 



At Los Cerillos, New Mexico, about twenty-two miles south- 

 west of Santa F6, are mines of turquois which have been 

 worked for centuries. The locality has been repeatedly 



