BY W. F. PETTERD. a7 
Lake Sorell ; with Adularia and ordinary Quartz in the Granite 
rock near its junction with metamorphic slate, Tasman Rivulet ; 
a brown porcelaineons form is abundant at the Magnet Range. 
Agate.—A variegated variety of quartz, the colours Deing 
arranged in bands, Goncengrie layers, and cloudy masses. ie 
Leven; Cranbrook, near Swansea ; River Forth; Flinders’ {sland; 
Cornelian Bay; Lake Sorell ; Heazlewood, and other places. 
Morion.—Black Quartz. Blue Tier ; Widens Island; Ben 
Lomond ; amamunilated Black Quartz ina solid compact form eons 
on the west branch of the Savage River, nearly opposite Long 
Plain. 
Hornstone.—A variety resembling flint, opaque to translucent, 
dull and glimmering lustre. In colour from white to the black 
Lydian 2 pes Lilydale : Oyster Bay; Flinders’ Island; Cornelian 
Bay; Mount Nelson; Mount Bischoff; Pieman River; "Macquarie 
Harbour; River Forth, and elsewhere. 
Common Opal.—An amorphous hydrated form of a milk- 
white to pale brown colour and vitreous lustre. 
Port pe Lake Sorell; Cornelian Bay; Macquarie 
Harbour; Supply Creek; Mount Cameron; Pieman; Dugam 
Range, near the Montagu ; ; Proctor’s Road, near Hopare. 
“Menilite-—A dull brownish to white translucent variety of 
common Opal, occurring in irregular reniform lumps or nodules 
which are impressed on the surface with angular depressions. In 
stanniferous drift, Gould’s Country. 
Geyserite—A white hydrated form occurring in cellular 
masses mixed with Native Sulphur. Mount Bischoff. 
Rose-quartz.—Of rare occurrence,and then not nearly so clear 
as that obtained in Bavaria and other places. Local examples 
are generally somewhat ferruginous and cloudy. 
West Coast : Beaconsfield ; Moorina. 
Amethyst.— Of a beautiful clear violet colour. A gem-stone 
much in use for ornamental work. 
In large detached abraded crystals in stanniferous drift at 
Moorina; in the Emu River about foar miles south of the 
Hampshire Hills ; also occurs at Mount Cameron and Blue Tier. 
Chaicedony.—Semi-transparent with a waxy lustre, often in 
mammillated form, but never in a crystallized condition. 
Of a greenish and brown colour, apparently infiltered in 
cavities and seams at Beaconsfield; in banded brown-coloured 
masses at Flinders’ Island; as waterworn pebbles, Swanport 
Lake Sorell; Tamar Heads; Cornelian Bay; Lisle ; Mount 
Cameron; Meredith Range; Heazlewood; Pieman River; 
Zeehan. 
Cornelian.—Of a more or less variegated red colouration, 
often banded with white and yellow, and sometimes showing 
crystalline age gregations. 
‘Fingal ; Flinders’ Island ; Swansea ; River Forth ; Cornelian 
