Page:Transactions NZ Institute Volume 15.djvu/508

flame (Col. Mus. and Lab. Rep., vi., p. 16). Specimens have also been brought from the Buller River by Dr. Hector (Col. Mus. and Lab. Rep., vii., p. 26), and from the Wairau River, Nelson, by Mr. A. McKay (Col. Mus. and Lab. Rep., xiii., p. 35).

Garnets, Ṙ3 S̈i2 + …R S̈i, are of very common occurrence in New Zealand, associated with the crystalline rocks of the West Coast, and also with the quartz porphyries and pitchstones of Canterbury; they are also frequently found in the auriferous washes of various localities, numerous specimens having been forwarded by diggers who have mistaken them for tinstone. They are mentioned by Dr. v. Hochstetter in mica schist at Collingwood, and in the gold-wash of the Takaka Valley (New Zealand, 1863, Eng. ed., pp. 103, 107); by Dr. Hector, (manganese variety), in gneiss granite and quartzite of the West Coast (Jurors' Rep. N.Z. Ex., 1865 pp. 266, 437), in the Kakanui River, as lime-iron garnets (Jurors' Rep. N.Z. Ex., 1865, p. 437), in the gold-wash of Stewart Island (Trans. N.Z. Inst., vol. ii., p. 185), and in the gold-wash of the South (Trans. N.Z. Inst., vol. ii., p. 371); by Dr. v. Haast, as almandine in the quartz porphyries and pitchstones of the Malvern Hills and Mt. Somers (Jurors' Rep. N.Z. Ex., 1865, p. 257, and Geol. Rep., 1873–74, p. 9); by R. Daintree, Esq., F.G.S., in trachytic rocks and pitchstones of Snowy Peak Range (Trans., N.Z. Inst., vol. vii., p. 459, and by myself in gneiss and quartzose porphyry (granulite) at Resolution Island. Besides these garnets have been forwarded from Nelson by Mr. C. Broad, from Karaka Creek, Thames, by Mr. Davis, from Brighton, Wanganui, by Mr. Duigan, from Anatoki, by Dr. Hector, and from Mount Rangitoto, Westland, by Mr. E. Steward. There are, in the collection of the Colonial Museum, specimens of almandine, of a pinkish red colour, in granulite, from Dusky Sound; of fine garnet sand, from the West Coast of Nelson, and of iron garnets in schist from Collingwood, in gneiss from Dusky Sound, and also in a quartz vein from the same locality, and as a garnet-rock from Otago. The prevailing crystalline form is the rhombic dodecahedron, but the icositetrahedron is also of frequent occurrence in the specimens from Dusky Sound.

Muscovite, 3 …Al S̈i + K̇ S̈i³, is of very frequent occurrence in New Zealand as a constituent of the mica schist, gneiss, and granite of the West Coast. Some fine plates occur at Charleston, and also in Mitre Peak, Milford Sound. Its occurrence is mentioned by Dr. Hector in the schists and gneiss of the West Coast (Jurors' Rep. N.Z. Ex., 1865, pp. 266, 437), and in a dyke granite on Great Barrier Island (Trans. N.Z. Inst., vol. ii., p. 375); in the granites and schists of the West Coast, by Dr. v. Haast (Jurors' Rep. N.Z. Ex., 1865, p. 257; and as brown mica in a trachytic rock and silvery mica in a granitic rock at Snowy Peak Range, by R.