Locality List of Minerals from Victoria. 105 



quartz. Heathcote, in tertiary drift (N.M. Beech- 

 worth ; Essendon ; Keilor ; Mount Duneed; Shady 

 Creek (P.R. Vol. 3). 



Opalized wood. — See Silicified wood. 



Opal jasper. — See Jasper. 



Oriental emerald (Green sapphire). — Pakenham (M. 1870).. 

 Near Cooma (Bl. in Trs. R.S. Vic, 1866). Jim Crow 

 Ranges; Donnelly's Creek; Ovens River; near Dayles- 

 ford (Bl. 1866). (Dr. Bleasdale called this "the rarest 

 of all gems "). Beech worth ; Dry Creek ; Stockyard 

 Creek; Upper Yarra (P.R. Vol. 3). A green star 

 sapphire from Ovens (Bl. in Trs. R.S. Vic, 1865-6). 



Oriental topaz (var. sapphire). — Pakenham (M. 1870). Ovens 

 (Bl. in Trs. R.S. Vic, 1865 6). 



Orpiment. — Deptford; Mount Baldhead, Gippsland, in cavities of 

 pyritic quartz (CI.). Sulphide of arsenic at Stawell 

 (P.R. Vol. 3). 



Ortiioclase.— The principal component in all our granites ; 

 veins in the neighbourhood of the granite and silurian 

 boundaries at Maldon ; Elphinstone ; Harcourt ; etc. ; 

 in detritus at Timbillica Valley, Gippsland ; and near 

 Kangaroo Flat, Talbot; Bradford, pink crystals; Reid's 

 Creek, Beech worth (M. 1866). Mount Barker and 

 Expedition Pass, Castlemaine, large crystals (T.S.H.). 

 Mount Taylor and the same series of rocks throughout 

 North Gippsland (CI.). Kyneton; Amherst (Sel. 1861). 

 Back Creek, Baynton (N.M. 1868). Cape Woolomai, 

 with albite (P. 1878). Beechworth (P. 1879-80). 

 Maldon, with garnets and muscovite (P. 1882-3). Lai 

 Lai; Phillip Island (T.M.). Dargo, in aplite (H. in 

 Trs. R.S. Vic, 1887, p. 137). 



Osmiridium. — Stockyard Creek, a few grains (P. 1873). Turton's 

 Creek, South Gippsland, small quantities in the alluvial 

 workings (P. 1880-1). vVaratah Bay (T.M.). 



Palagonite tufa. — Collingwood (P. 1889). 



Phacolite. — Richmond basalt quarries (P. 1876). South 

 Clunes (P. 1879-80). Collingwood, in basalt (P. 1880). 

 Brunswick quarries (P.R. Vol. 6). 



