Cox.—On the Mineralogy of New Zealand. 408 
fuses easily, and with intumescence to a colourless transparent bead. 
Easily decomposed by hydrochloric acid, with separation of gelatinous 
silica, 
ANALYSIS, 
Silica 44-71 
Hon... 14:66 
Alumina 11:47 
Lime .. 22:93 
Magnesia ; E 2:18 
Water of constitution A 4:10 
100:00 
Kyanite (Disthene), 4} Si.—This mineral is mentioned in the Catalogue 
of the Colonial Museum (p. 119) from Westland. The specimen is of & 
beautiful cobalt blue colour, and associated with quartz. The crystals are 
not very distinct. 
Chiastolite.—Crystals of this mineral, of a dirty-grey colour, imbedded 
in elay slate, from Slate River, Collingwood, are in the collection of the 
Colonial Museum. 
basalt is mentioned (Col. Mus. and Lab. Rep., x., p. 48) from Castle Point, 
Napier, having been collected by Mr. A. McKay. 
Scapolite, A1? Si? + (Ca, Na) Si.—The occurrence of this mineral in a 
massive form atthe Dun Mountain is mentioned by Mr. E. H. Davis (Geol. 
Rep., 1870-71, p. 112), and an impure form of the same mineral was 
forwarded from the Maitai Valley, by the Nelson Museum, in 1868. The 
specimens collected by Mr. E. H. Davis were analyzed at the Colonial 
Laboratory, with the following results ;— 
Silica $a ps .. 48:63 48:29 43:06 
Lime ex .. 2589 26:59 24:84 
umina .. 20:70 20-47 11:47 
Iron sesquioxides, with . 
d manganese .. J traces traces 7°24 
Magnesia i "85 9-06 
Water e. ss AUD 2:53 3:42 
Loss Ys ss ny 1:27 1:41 
100-00 100:00 100:00 
Nos. 1 and 2 are white minerals, with rare mottlings and strie of a 
dark red colour; they are dull and opaque, but in thin sections translucent ; 
easily fusible in the blowpipe, with intumescence to transparent beads, 
giving faint reaction of soda. No. 9 has a general similarity to the others, 
but is uncoloured, and fuses to a yellow-coloured bead in the blowpipe 
