602 The American Naturalist. (July, 
hedra with baddeleyite, perofskite, ete., in the decomposed magnetite- 
pyroxenite of Jacupiranga, Sao Paulo, Brazil. Its density is 4.706, its 
hardness 5.5, and an analysis gave ZrO,+-TiO, 79.79 (48.90+-30.89?), 
FeO 6.64, CaO 11.61, MgO .49, loss on ignition 1.02, total 99.55. 
Note of this mineral without proposal of a name was earlier made by 
Hussak in Tschermak’s Min. Pet. Mitth., XIV, pp. 408-410. 
Epidote and Zoisite.—In connection with a somewhat detailed 
study of four alpine occurrences of epidote and zoisite, Weinschenk* 
proposes the name celinozoisite for those monoclinic members of the 
zoisite-epidote group which approach zoisite in chemical composition, 
are optically positive, and have a less index of refraction and a less 
double refraction than ordinary epidote. A beautifnl new occurrence 
of clinozoisite at the Goslerwand in the Tyrol furnishes crystals of a 
delicate rose-red color. Their crystal form coincides with that of epi- 
dote. An analysis gave :— 
SiO, 39.06 
Al,O, 32.67 
Fe,O, 1.68 
FeO 29 
MnO trace 
CaO 24.53 
H,O 2.01 
100.14 
The indices of refraction are œ—1.7176, 2-==1.7195, and y=1.7232. 
Hence the double refraction y—œ=.0056, which is the lowest value 
ever recorded for a monoclinic epidote. The optical angle is:— 
2V u = 80° 50’, 2Vx, = 81° 40, and 2Vn = about 83°. Sp. G. 3.372. 
The Monoclinic Pyroxenes of New York State.—These, 
with the exception of wollastonite, are quite fully discussed by Ries,‘ 
who gives also an extended bibliography of the subject. The alumin- 
ous augites of New York show more frequently an exception than an 
agreement with Tschermak’s suggestion that Ca is less than Mg+Fe- 
Most of the large mineral collections which were likely to contain much 
material from New York were consulted in the course of these studies, 
so that the list of localities is doubtless very complete. 
3 Zeitsch. f. Kryst., XXVI, pp. 156-177, 1896. 
* Annals N. Y. Acad. Sci., IX, pp. 124-178, June, 1896. 
