Census of Victorian Minerals. 267 



crushing r.nd washing. The reefs which do not contain 

 it are also probably devoid of the precious metal. Auri- 

 ferous dyke rocks are invariably pyritic, and in the 

 county rock adjacent to them and to many quartz reefs, 

 the mineral is also developed. Secondary pyrite is 

 mostly non-auriferous, and, as far as can be ascertained, 

 never contains gold in payable quantity. 

 Pyrolusite. — Manganese dioxide. 



Buchan River (CI.). 

 Pyrophyllite. — Hydrous silicate of aluminium. 



Scaly, rich in lithia, Egerton (B.M.). 

 Pyrrhotite. — An iron sulphide. 



Massive, Thomson River ; in diorite, Buldah Creek, East 

 Gippsland (CL). 

 Quartz.* — Silica. 



Massive, green and crystalline ; the colour is perhaps due to 

 the presence of chlorite. One mile south-east of Tangil 

 (W.). 



var. Chalcedony. — Grey in colour and of tine botryoidal 

 structure on porous limonite, Granite Flat, Snowy 

 Creek (W.). Banded, Mount Cudgewa, Upper Murray. 

 From a cross course at a depth of 5 feet, Mount Black- 

 wood (B.M.). 



Agate. — Banded with crystalline growth, Yandoit (B.M.). 



Basaiiite. — Rolled fragment. Ovens River (B.M.). In most 

 drifts all over the colony (R.). 



Flint. — Nodular concretion, Loutit Bay (B,M.). 



Jasper. — Massive in Upper Silurian, Mount Cooper (B.M.). 

 Rhabdite. — A phosphide of iron and nickel. 



This mineral occurs plentifully in the meteorites forming 

 nearly one per cent, of the mass of the nickel-iron in the 

 Cranbourne No. 1, Cranbourne No. 1 Meteorite (F.). 

 Beaconsfield Meteorite (C). Analysis : — 



Specific gravity — 6-33 to 6-78. 



