BY W. F. PETTERD, C.M.Z.S. 167 



abundant in the vescicles of the basalt at Rouse's Camp, 

 near Waratah ; at the railway bridge which spans the 

 Hellyer-road ; and also in less profusion in the basalt at 

 Springfield. 



307. Stannite (Sulphide of Iron, Copper, and Tin). 



This somewhat uncommon mineral was first obtained in 

 this island at what was known as Clark's, or No. 1, 

 Tribute, Silver Queen Mine, Zeehan, and apparently 

 occurred in considerable abundance intermixed with 

 galena, chalcopyrite, and pyrite. Many assays proved it 

 to contain about 90 oz. of silver with approximately 3 dwt. 

 of gold per ton. Many of the samples appeared to merge 

 into chalcopyrite on the one hand, and into ordinary iron 

 pyrite on the other. It is mined at the Oonah S.M. Com- 

 pany's property, Zeehan, somewhat extensively, the occur- 

 rence being in many respects parallel with the occurrence 

 at the Conrad Mine, Howell, New South Wales. It does not 

 occur either at Zeehan or at its New South Wales locality 

 in a crystallised state : but it has been obtained at its class'c 

 locality, Cornwall, England, where it is also known as 

 '' bell metal ore," in a crystalline condition or showing 

 imperfect crystals. More recently well crystallised 

 examples have been obtained at Oruro, Bolivia. It has 

 been found that the species belongs to the tetragonal 

 system, and presents forms closely related to those of 

 copper pyrites. In Cornwall an extremely rare silicate 

 coniaining tin and calcium, stokesite, crystallising in the 

 orthorhombic system, has been obtained at St. Just's. It 

 may not be out of place to note that stannite occurs in 

 Bolivia in close company with four interesting sulphides 

 peculiar to that country, viz: — cylindrite (Pb^ Sbg Srq 

 Sgi), canfieldite (Agg (Su & Ge) Sg), franckeite (Pbg Sbg 

 Sn.2Si2), and teallite (Pb Sn 8.3). None of these rarer 

 tin-bearing species of minerals have so far been detected 

 in Tasmania, but as they are found associated with the 

 stannite in the localities mentioned, it would not be sur- 

 prising if some of, or analagous forms to, these minerals 

 should be discovered. 



308. Stichtite fCarhonatohydrate of Magnesium, 



Chrome, and Iron). 

 This is beyond doubt an unrecorded mineral species 

 which has hitherto been known under the name of kam- 

 mererite, and is referred to by the writer under that appel- 



