Cox.— On the Mineralogy of New Zealand. 405 
Daintree, Esq., F.G.S. (Trans. N.Z. Inst., vol. vii, p. 458), and is again 
alluded to by Prof. Liversidge, from Dusky Bay and Charleston. (Trans. 
N.Z. Inst., vol. x., p. 497) 
Lepidolite.—The occurrence of this mineral is mentioned by Dr. Hector 
in the gneiss of the West Coast and in the marble of Thompson Sound 
(Jurors’ Rep. N.Z. Ex., 1865, pp. 266, 487). 
Biotite, A] Si + (Mg, K, Fe)? Si, is mentioned by Dr. Hector (Jurors’ 
Rep. N.Z. Ex., 1865, pp. 266, 437) as occurring on the West Coast, and 
there are specimens in the collection of the Colonial Museum from Milford 
Sound and Doubtful Inlet. In the last locality it occurs as a black-green 
mica rock with numerous minute crystals of zircon. 
Rubellane is mentioned by Dr. v. Haast as occurring in the volcanic 
rocks of Banks Peninsula (Jurors’ Rep. N.Z. Ex., 1865, p. 257). 
Lepidomelane, C Al Ee) B + (Fe, K) Si.—This mineral is mentioned by 
Dr. Hector (Jurors’ Rep. N.Z. Ex., 1865, pp. 266, 437) in the schists and 
gneiss of the West Coast, and there are specimens in the collection of the 
Colonial Museum from Milford Sound, where it occurs in thin hexagonal 
plates of a blackish-green colour, bronze by reflected light in certain posi- 
tions ; streak, dirty green. Thin lamine slightly flexible, rather brittle. 
Before the blowpipe becomes bronze- yellow, and does not fuse. 
Margarite, Af Si + (Ca, Na, Mg) Si + H, is mentioned by Dr. Hector 
(Jurors' Rep. N.Z. Ex., 1865, pp. 266, 437) in the schists and gneiss of the 
West Coast, and by Dr. v. Haast from the same localities (Jurors’ Rep. 
N.Z. Ex., 1865, p. 257). There is a small specimen in the collection of the 
Colonial Museum from Milford Sound of a pearl-grey colour. 
Chrome Mica.—This mineral is a chrome-magnesian mica, occurring in 
flat tabular plates of a green colour, and belongs to the hexagonal system. It 
is taleose in appearance and feels soapy to the touch, but Mr. Skey's analysis 
precludes its falling into the tale group, and it must therefore be considered 
as a chrome-magnesian miea, the percentage of water in which is somewhat 
high. A somewhat similar mineral from Schwartzenstein, analyzed by 
Schafhautl, is mentioned in Dana's System of Mineralogy, but it contains 
more silica and less alumina than this specimen. 
Schwartzenstein.  Dead-horse Gully. 
47°68 9°25 
Silica 3 
Alumina.. aa i 15°15 22°12 
Chromic oxide .. 2 5:90 1:56 
Ferric oxide  . Sk 5°72 18°69 
Manganous oxide ay 1:05 E 
Magnesie oxide. . 11:58 10-60 
Sodic oxide z si ded 113 
Potassic oxide .. m 7.27 
Water .. es s 2°86 4°06 
dimé. i$ ja — 2:18 
