420 Scientific Intelligence. 
II. MINERALOGY AND GEOLOGY. 
1. Note on the possible identity of Turnerite with Monazite ; by J.D. 
Dana.—The crystals of the rare mineral Turnerite have be een measured 
by Levy (who first ea the species), Marignac, Phillips, Descloi- 
zeaux, and vom Rath. e latest investigations, by Dr. G. vom Rath, 
are published in Dement. Annalen, vol. cxix, p. 247, and are ac- 
mpanied with two new figures; his crystals were from a new locality 
in as Tavetsch valley, at Santa Brigritta near Rudras—the specimens 
before known having come from Mt. Sorel in Dauphiny. The crystals 
are somewhat tabular, with (1) a zone pres to the orthodiagonal of 
the three — in order, 2, c, u, and a fourth @ but only as a result of 
cleavage, on the edge x: wu’; and hs a uranstre zone, directly across ¢, 
containing, either side of c, the planes n, v, e, 0, b, the last the face ¢- 
((aP a) of Naumann) parallel to the ctinodiagonal BPO also (3) 
some other planes. fey Rath makes e= O(o0 nn); a (cleav- 
age face) =it1(aPa); u=-l-i (-P a); fay -4 ‘CEP pe Ry Uy €y O, 
the clinodomes 4-4, 4-1, 1-i, 2-2 
The following are a few of the angles given: 
vy. Rath. Descl. 
Marignac. 
Ste ss. Slt oeiy nee 
@:u = 142° 15! seks asws 
C2: ae. 40 S77 140° 40/ vee 
OTe Se OTC ret 126° 31° 126° 31’ 
€ze sa 190" 65! 136° 48/ 136° 43/ 
Tn form and habit the crystals are much like those of Ses ae and 
of monazite (see my apa ee gy, Pp 402); coig, u=1-i, a= -1-t; 2, %, 
é, 0, are vertical prisms; and e=J, or the fundamental prism. The an- 
in monazite orteisaiiie to the above are as follows: 
Biol4 ome at eo 186? 6 
Qed ata => 148° 6 
Pet ee ee eo hp ee 5 00° 40° 
—#3-lt = e:@ = 126° 8! 127° 0’, Descl.) 
os ee Te - ct 8O? 40 a6 30', Descl.) 
| The angles cited are sufficient to determine all the dimensions of the 
i denen and the approximations in angle and cleavage leave little doubt 
at least the near identity in crystallization of turnerite and monazite. 
The absence 
other mark 0 resemblance. Moreover, in hardness they are the same; 
in color very similar. Yet the actual identity of the a som eannot be 
ke ed tt ithout new crystallographic comparisons, or 3 
mical examination of tur The trials by Mr. Children were too 
imperfect to be decisive against it; while they show that turnerite is not 
a rig tm MS silicate, 
mite—Professor H nry Wurtz has proposed the name (7ra- 
hamite (F (Repent upon a Mineral Formation in West Virginia: New gts 
