H. How on Faréelite of Nova Scotia. 31 
well, inasmuch as the designation he has chosen marks at once 
the individuality of the mineral and the locality affording him. 
e material for the experiments upon which he has based his 
eiaaticions The deseription given of its characteristic appear- 
ance and association is this:* ‘It occurs associated with mesolite 
but still always distinct from it, being in implanted and isolated 
globules or Eee sometimes overlaid but never underlaid 
by the mesolite. The color is usually bluish-white and the lustre 
decidedly pearly, not glassy nee the mesolite 
I met with specimens having in every aevalat the foregoing 
aracters, in the trap cliff in as éaeighbe rhood of a small fish- 
ing village called Port Geor. TBe, in a ey Co., N.S. and 
om haying obtained some i urse 0: 
three or four hours’ search for sneha I have little doubt of its — 
ne tolerably abundant in that locality. The hardness of the © 
sole of Berzelius is stated to be 3:5, the specimens of the 
Nova wey ee Ny whose analysis is given below, had hard- * 
ss =4°5; thin laminee of it, which it afforded very cae 
Seciateal plore t e blowpipe and in a good heat fused to a aieery. 
enamel; it gelatinized perfectly with HCl before and after i 
tion. The analytical numbers I obtained are collated with those 
of Heddle from the Skye mineral; my first two pialyare were 
on air-dry material, the third on that aed over HSO:: 
Scotland, Heddle. Nova Scotia, How. 
f a Il. il. et IL i. gst: 
Soda, 5717 438 % 5:33 5°00 3°T54 558 2s 
ime, 11°54 11°40 9°82 11-70 11°92 1152 i 
Alumina, 28°44 30°00 29°30 29°31 29°98 2952 © 
Silica, 41°32 41-20 43°17 41°41 4148 4090 
Water, 13:26 13°20 12°40 12°83 12:87 1249. - 
10033 100718 10002 10025 10000 10001 
@ By deficiency. 
It will be seen at once that the results are very concordant, and 
that we have the same combination in both cases. The oxygen 
ratio deduced for RO, R2Os, SiOs, HO is very nearly 1:3: oe cae 
upon the average of the analyses, and Dr. Heddle writes 
formula of fardelite 
NaO SiOs, 2Ca0 Si03+8Al20s, 2Si03+8HO. 
which requires the percentages, 
: Soda, : : ; ; : 5-74 
Lime, - . ee - 1037 
Alumina, - = - feat P 28°57 
Silica, - St ae eee * - 41°96 5. 
Water, - et - co. 1884 ae 
