Brush and Dana—Fairfield County Minerals. 359 
Art. XLITL—On the Mineral Locality in Fairfield County, Con- 
necticut, with the description of two additional new species ; b 
Grorce J. BrusH and iow And S. Dana. Second Bias tsk 
IN the preceding volume of this Journal (July and Biter 
1878), we published an account of the discovery of a new min- 
eral locality at Branchville, Fairfield County, Connecticut, and 
gave descriptions of five new minerals, all manganesian phos- 
ates, occurring there. Durin the autumn following we 
pushed forward our explorations at the locality with as much 
vigor as possible, and with tolerable success. 
fortunate in finding a new and ee deposit of the 
phosphates, and ok rom it a considerable quantity of 
results of a new analysis of ba fy and some further facts 
in regard to lithiophilite. Both of the new species came from 
the original material, removed by Mr. Fillow, when the locality 
was first opened. We have not, as yet, succeeded in finding 
tidisonal: quantities of them. It may not be improper to add 
that with the return of warm weather we haye commenced 
anew the exploration of the locality in a more thorough manner 
than before, and we hope to meet with some success. 
6. comeaslneiaeonceete 
resembling selenite; also occasionally in radiating masses con- 
sisting of curved foliated or fibrous s aggregations; these radi- 
ated forms are not unlike stilbite. 
e hardness is 3°, and the specific gravity 315. The 
is rly to sub- adamantine; on the surface of perfect 
device (6) it is highly brilliant. The color is white to pale 
straw- -yellow ; the streak is white. Transparent. Brittle. 
Two rather distinct varieties have been observed : the first (A) 
occurs filling cavities in the reddingite, and covering the dis- 
tinct crystals of this mineral. It is uniformly clear and trans- 
goge: and is highly lustrous, showing entire absence of even 
UR. Sct.—T HIRD Fares: Vou. XVII, No. 101.—May, 1879. 
