420 Transactions.—G eology. 
The present paper will be devoted to the metallic minerals. 
Meratuic Minerats.—Class I. 
Brittle and fusible with difficulty. 
Trrantum. 
Brookite, Ti.—The occurrence of this mineral in a trap-rock (coarsely 
crystalline dolerite, belonging to the upper cretaceous period) at Otepopo, 
discovered by Dr. Hector in 1862, is mentioned in the Jurors’ Reports 
of the New Zealand Exhibition, 1865, p. 264. No specimens are in this 
Museum, and Professor Liversidge does not mention it in his description 
of the New Zealand minerals in the Otago Museum submitted to him for 
examination by Professor Hutton. 
Imenite, Ee, Ti.—This mineral is represented in the iron-sands of New 
Zealand, which contain variable quantities of Titanic oxide, but it more 
properly belongs to the ores of iron, under which it will be described. 
Titanium has not up to the present time received any useful application 
in the arts, indeed all its properties appear to act deleteriously. Associated 
with iron, as in the well-known Taranaki iron-sand, it renders the ore 80 
refractory as to make it practically useless, and in Norway and Sweden, 
where vast deposits exist in readily accessible places, they are unworked, 
although the ore could be placed in the English market for as little as 10s. 
per ton. 
TaNTALIUM. 
This metal has not sah been discovered in New Zealand. 
TUNGSTEN. 
Scheelite, Ca W.—The occurrence of this mineral in rolled fragments, 
in the Buckle Burn (where it was originally discovered by Dr. Hector), Rees 
River, and Wakatipu Lake, as well as in small grains with arsenical pyrites 
at Waipori, is mentioned in the Jurors’ Reports of New Zealand Exhibition, 
1865, pp. 265, 414, and the specimen from Buckle Burn has again been 
described by Professor Liversidge (Trans. N.Z. Inst., vol. x., p- 503), 
but it was not till 1880 that the mineral was discovered in siti, when 
Mr. McKay obtained it in a reef on the west side of the Richardson 
Mountains. 
It is found as irregular masses in a quartz reef 4 feet in width, and 
carrying a considerable quantity of mispickel, which occurs at the junction 
of the chlorite schists and blue slate, but belongs principally to the chlorite 
schists. 
Scheelite, or the Tungstate of Lime, has a very limited application = 
he arts. It is used for the production of tungstate of soda, a substance 
i ee ee 
fireproofing fabrics. 
