404 Transactions. — Geology. 



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, R 3 Si 2 + .R Si, 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, andGeol. 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 occur- 

 rence in the specimens from Dusky Sound. 



Muscovite, 3 -Al Si + K Si 3 , 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, Mil- 

 ford 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. 



