458 N. H. Darton—New Locality for Hayesine. 
by some irregularities of grow 
A second generation of analcite was observed, analogous to 
that of chabazite, the crystals being very small and clear. 
They were observed upon apophyllite. 
n the eastern side of North Table Mountain, analcite is 
any other zeolite. Large cavities have a floor of analcite, but 
always in quite small crystals. Natrolite is almost invariably 
deposited upon it, and frequently small cracks are filled with 
the same mineral, associated with calcite or natrolite. 
Analcite was also found in spaces between the pebbles of a 
conglomerate bed, not far below the basalt, the pebbles being 
of basic eruptive rocks. 
Denver, Colorado, April, 1882. 
[To be continued. | 
Arr. LIII.—On a new Locality for Hayesine and its novel 
occurrence; by Netson H. Darton. 
HayYEsINE has only been found heretofore, as far as I can 
find, at Iquique, South America, upon the western coast of 
Africa, and in Nova Scotia, and occurring with gypsum and 
some allied species, the variety generally containing soda in 
greater or less but no fix roportion. I now add another 
locality, which is Bergen Hill. It occurs here, not with gyp- 
sum, ete., but with datholite and calcite in cavities in the trap 
: : 
and 185 feet below the ground above, I found in examining a 
vein of calcite, etc., ex on the north side, a peculiar min- 
eral lying upon the crystals in the geode that I did not recog- 
nize for this locality. It evidently was not pectolite as the 
fibers were quite soft, even pulverulent. They seemed more 
* Alfredo Ben-Saude, ‘‘Ueber den Analcim,” in ‘“ Neues Jahrbuch fiir Min- 
eralogie” etc., 1882, I, 41. 
