BY W. F. PETTERD. 63 
215. SCHILLER SPAR (a Hydrated Silicate of Magnesia). 
Occurs in many varieties on eastern side of the Parson’s Hood 
Mountain ; Heazlewood; Asbestos Mountain; Dundas ; Magnet 
Range; Parson’s Hood. The minerals termed Bronzite and 
Diallage are but varieties, and some authorities consider the whole 
but altered forms of Augite. 
Bronzite is an essential constituent in the rock Gabbro so plentiful 
at the Heazlewood. It occurs of foliated structure and pale-green 
colour in Serpentine, Dundas. (Ballarat School of Mines 
Museum.) ‘This species is also known as Bastite. 
216. SERICITE (Hydrated form of Mica). 
Occurs in foliations of schistose structure, colour greenish with 
a silky lustre. Dundas. 
217. STEPHANITE (Sulphide of Antimony and Silver). 
Reported as occurring at the Scamander Silver mine. 
Scamander River, East Coast; at the Owen Meredith Silver 
mine it is found intermixed with Galena, the whole giving very 
high returns for Silver. 
218. SULPHUR. 
Found in the form of extremely minute crystals and microscopic 
patches in Galena. Mount Reid; British Zeehan Silver-lead 
mine, Zeehan; obtained in some quantity as a powdery mass 
composed of microscopic crystals intermixed with a pulverulent 
form of quartz (Geyserite), at Mount Bischoff. This discovery 
is interesting from the fact that it is the first of the substance in 
appreciable quantity that has occurred in this island. 
219. SPHEROSIDERITE (Carbonate of Tron). 
Of common occurrence in amygdaloidal Basalt in the form of 
small dark brown nodules. Rouse’s Camp near Waratah ; near 
the railway bridge that spans the Hellyer River. 
220. STIBNITE (Sulphide of Antimony). 
Found in massive irregular bunches in a quartz reef. The 
mineral was of the usual columnar structure, and cof a remarkably 
pure character. Orlando Gold mine, Lefroy ; in limited quantity 
south of Mount Claude, near the River Forth; impure and 
apparently merging to Jamesonite, Mount Bischoff; ‘‘ Sulphide 
of Antimony, yielding 8 to 18 ozs. of Silver to the ton, from 
Mount Bischoff” (W. F. Ward, Tasmanian Official Record, 1892). 
I have not seen pure Stibnite from Mount Bischoff, although several 
antimonial minerals are abundant there. 
221. SELENITE (a variety of Gypsum). 
Occurs in more or less transparent lamine. Obtained in small 
