288 PROCEEDINGS OF SECTION B. 



Muscovite, — Mount Wills, in dykes!!. Some flakes measure 

 3" X 2"; also in most of the older granites of North 

 Gippsland. 



Opal. — Gelantipy !! !. In large deposit; occasional pieces 

 show a play of colours ; most are yellowish or dark 

 brown. 



Orpiment. — Occurs in cavities in pyritic quartz, with Realgar; 

 Mount Baldhead!, Deptford!. 



Orthoclase. — Mount Taylor!!. Large and well-defined 

 crystal occur in same series of rocks throughout North 

 Gippsland. 



Pharmacosiderite. — Boggy Creek, near Mount Taylor, cubic 

 green crystals, in crevices of greenish-stained quartz, 

 containing gold. 



Pretinite. — Snowy Bluff (H.) 



Psilomelane. — Mount Taylor District ! ! ! . In veins intermixed 

 with quartz. Many fragments of quartz are covered 

 with a film of steel gray mineral. Bruthen !!, Boggy 

 Creek ! !, Omeo ! !, Gelantipy ! !. 



Pyrites. — Occurs in nearly all the gold-bearing reefs in the 

 district, along with leuco-pyrite, arseno-pyrite, in some 

 cases giving 40 ounces of gold to the ton. Haunted 

 Stream ! ! ! and Omeo ! ! ! , Dargo ! ! !. Carpenter's 

 Quarries, Nicholson River!, one-inch cubes have been 

 obtained. 



Mount Look-out!, nodular masses in lignite. Clifton 

 Morass !, pseudomorph after wood. 



Pyrolusite. — Mount Taylor ! !, 



Quartz. — The most plentiful mineral in the district. In 

 veins on all the goldfields. 



Agate!. — In rolled lumps. Boggy Creek; crystals 

 of quartz interlaced, with gold enclosed, Baldhill 

 Creek.! 



Rock Crystal. — Nicholson River!. 

 Jasper, Chalcedony, and other varieties near Buchan!!!. 

 Bronze-coloured Quartz. — Mount Taylor!!. Some- 

 times shows an iridescent film, which consists of ferric- 

 oxide. 



Quicksilver. — From an upper tributary (Swamp Creek) of the 

 Wentworth, in alluvial !. (Jorgensen.) 



Realgar. — See Orpiment. 



Sapphire. — Bairnsdale gravels!, Upper Boggy Creek 

 gravels!. 



Serpentine. — Dargo ! !. 



