Mineralogy and Petrography. 735 
axial or orthorhombic, and its specific gravity is 3.79.—According 
to Prof. Chester,! the marcelite from Cumberland, R. I., and the 
photicite and klipsteinite from Jackson county, N. C., are nothing 
more than mixtures of rhodonite and its decomposition products, 
a conclusion to which Prof. Bauer? of Marburg, assents.—Native 
latinum and cinnabar are reported‘ as occurring in British Colum- 
ia. The former has been found in the bed of a branch of the 
north fork of Similkameen River. It is in the form of rounded 
grains and pellets. It has the composition :— 
Pt Pd Rh Ir Cu Fe OsIr Gaugue. 
72.07 19 2.57 1.14 8.89 8.59 10.51 1.69 
The rare minerals‘ wranite, gummite and wraconite have also been 
found in Canada, at the Villeneuve mica mine, Ottawa county, 
Province of Quebec.—Xanthitane, from Green river, Henderson 
county, N. C., is an alteration product of sphene. It is apparently 
a clay with the silica replaced by titanium. The air-dried sub- 
stance loses 6.02 per cent. of water at 100°. The composition of 
the dried material is :— 
nO, SO, (AI MO 00 NO 2 
1.76 61.54 17.59 4.46 -90 4.17 9,92 
—Bement* mentions the occurrence of fine crystals of wulfenite at 
the Red Cloud mine in Arizona, and beautiful azurite and malachite 
at Bisbee, in the same State.—Knop § declares the olivine from the 
limestone of Schelinger, in the Kaiserstuhl, to be forsterite, with 
the composition : — 
SiO, MgO FeO MuO Al,O, 
41.88 49.83 4.56 1,73 trace 
eee Jahrb. f. Min., ete. 1888. I., p. 187. 
» p. 21 
oe Rep. Geol. and Nat. Hist. Surv. of Canada in 1886. T. p. 5. 
Ib. 3 
akins. Am. J. Science, May, 1888, p. 418. 
í Zeits. f. Kryst., xiii., 1887, p. 16. 
s Ib., xiii., 1887, p. 236. 
Zeits. f. Kryst., xiii., 1887, p- 278. 
