Locality List of Minerals from Victoria. 103 



Natrolite. — Phillip Island, ill basalt (M. 1866). Flinders (T.M.). 

 Chetwynd, in older basalt (T.M. Catalogue, 1894). 



Nepheline. — Phillip Island, in older basalt (P. 1877-8). (Record 

 apparently altered to Apatite without comment. See 

 T.M. Catalogue, 1894, p. 43). 



Nickel. — Western Port district, in native iron (B.S. 1861). 

 Thompson River Copper Mine, sparingly (P.R. Vol. 6). 



Newberyite. — Near Warrnambool, in guano deposits ; Skipton 

 Caves, in guano deposits (" Chem. News," 13th May, 

 1887). For analysis see the same journal. 



Nontronite. — (variety of chloropal). Maldon, small seams and 

 patches in reefs (M. 1866). New Chum Reef, Bendigo 

 (P. 1874). Mount Steiglitz (T.M.). Granya (P. 1882-3). 



Obsidian. — The following have been recorded as occurrences of 

 obsidian (see note below). In pieces on basaltic plains 

 round Mount Elephant and Mount Eeles (1 Mount 

 Eccles, J. A. A.) ; also, strange enough, over the tertiary 

 mud plains of the Wimmera, far removed from any 

 basaltic craters or points of eruption ; near Geelong, 

 in basaltic quarry ; Broadford, in basalt ; Spring Creek, 

 near Daylesford, pieces in tertiary drift (M. 1866). 

 Ballarat, from western deep leads (P. 1874). Buttons 

 from the lava floors of Western District ; Geelong and 

 Ballarat, buttons and hollows bombs (T.M. Catalogue, 

 1824). Barwon River (T.M. ). Ararat ; Ingleby (P.R. 

 Vol. 3). For analyses see Catalogue N.M. 1868). 

 Note— Mr. A. W. Howitt, F.G.S., tells me that he 

 has analysed a number of specimens of the so-called 

 obsidians, and has found them in every case to be basic, 

 and that we have no obsidian as we now know it ; but 

 that our volcanic glass is really tachylite. Mr. Rule, 

 late of the Technological Museum, expressed the same 

 opinion to me on another occasion. 



Odoktolite (Bone turquoise). — Bairnsdale, a fossil tooth of a 

 kangaroo (T.M.). 



Oligoclase.- — Mount Franklin and the Anakies, in scoriaceous 

 basalt; Lake Purrumbete; Black Hill, near Kyneton, 

 in granite ; Tarrengower, in granite ; Harcourt, in 

 granite (M. 1866). Kyneton (Sel. 1861). Anakies, 



