30 T. S. Hunt on a new Titaniferous Mineral. 
Art. IV.—Description and Analysis of a new Mineral Species, 
containing Titanium ; with some remarks on the Constitution 
_ of Titantferous Minerals ; by Tuomas S. Hunt of. the Labo- 
ratory of Yale College. ial | 
_ Tuts mineral, which is here Seca, accurs at Amity, New 
York, imbedded in a white magnesian limestone, with serpentine, 
ilmenite, spinelle and chondrodite. In its physical characteristics, 
it resembles closely Warwickite from the same neighborhood, and 
indeed the specimen which I have analyzed, was handed to me as 
a specimen of Warwickite; but its chemical. characters and com- 
position differing so much from, those obtained for that mineral, [ 
offer it as a new species, and would propose for it, the name of 
Enceladite, alter Enceladus one of the Titans of ancient my- 
thology. 
Mineralogical Description.—Primary fo orm. An obligtes thom- 
bic prism. M on M = about 93°; but from the roughness of its 
faces it is impossible | to measure the angles accurately. 
Secondary form. The primary with its obtuse lateral ‘edgeq. 
replaced; the summits of the smaller crystals terminated by i im- 
perfect planes and rounded. Cleavage with the. inciatnrtna 
* very perfect ; brittle ; fracture uneven... 
Lustre, in the jorge crystals glimmering, in ‘the smaller ones 
resinous, sometimes submetallic on the cleavage surfaces. 
Color, iron or bluish black passing into brownish black ; streak 
bluish black. 
..Hardness 3—4. . Specific oeerite 2: 188. 
Chemical E'xamination.—W hen heated - ina abe it gives off 
water and assumes a lighter color; if ignited in contact with the 
air it assumes a brick red. Bice before the blowpipe infusible ; 
with borax it gives a clear bead colored by iron; with salt of 
phosphorus it gives a globule, orange yellow when hot, which on 
tis but slowly acted upon by hydrochloric acid, even i 
aided ed by heat ; but concentrated sulphuric acid readily decomposes 
it by the ; Sa of heat, forming a grayish mass. _, 
, tive Analysis.—A.. A portion of the mimeral, in fine 
: ae yee with, _sulphuric acid, in a platinum erucible, 
te gn Mh 
_Chaunas aN riences for 
es are 8 
