78 NOTES ON TASMANIA N MINERALS. 



This variety of epidote appears to be somewhat 

 abundant on the margin of the Upper Emu 

 River, opposite the north-west shoulder of 

 Valentine's Peak. The crystals are at times 

 quite half an inch in length, but are commonly 

 broken and decomposed. Flakes of molybdenite 

 sometimes occur disseminated in the masses of 

 the substances. 



6 Genthite. — (^Hydrous basic nickel and magnesium 



silicate.^ 

 Found sparingly on Pentlandite, near Trial 

 Harbour. 



7 Gib B SITE. — (^Aluminium hydrate.) 



Forms a thin seam on what is apparently the wall 

 of a copper-bearing lode. Clarke and Sice's 

 Copper Mine, Blythe River. 



8 Heliophyllite. — (^Arsenate of lead ivith chlorine.) 



In small crusts lining druses with crystalline glim- 

 mering and wax-like surfaces. Comet Mine, 

 Dundas. 



9 Hercynite. — (Iron aluminate.) 



Occurs as fairly large lumps in tin drift. It is 

 amorphous, dull, of a bluish black colour and 

 fine granular. 



Analysis by Mr. J. D. Millen. 



Fe^ O3 = 46-91 

 Cu O = 005 



= -0892 



= 086 



= -049 



= 41-69 



99-37 

 Sp. gravity, 3'765. Hardness, 3-9. Locality, 

 Moorina. (J. Rundle.) 



10 Hydromanganocalcite. — (^Hydrous carbonate of cal- 



cium and manganese.) 

 Occurs as a soft pink substance which readily 

 absorbs moisture, and is thus easily reduced to 

 powder. Heazlewood Silver Mine, Whyte 

 River. 



11 Iron. — {Lefroy meteorite.) 



A small meteoric siderite was obtained by a pro- 

 spector in testing a dish of alluvial drift for 



