24 MINERALS OF TASMANIA. . 
Scamander River Silver-fields. It usually occurs as minute 
irregular blebs and crystais in ferro-manganese gossan and in 
kaolin with other oxidised metallic minerals. 
69. CHLOROPHANE (A variety of Flnorite). 
When heated this mineral shows the peculiar phosphorescent 
light of a clear emerald-green colour. It usually occurs from 
light violet to colourless, but is very rarely, if ever, obtained in a 
crystallized form, being generally in compact to granular masses. 
Mt. Bischoff; Mt. Ramsay; Branxholm; Ben Lomond (Great 
Republic Tin Mine). 
70. CERVANTITE (Antimony Oxide). 
Abundant as a result of the decomposition of Antimonial - 
Minerals, usually as a thin coating on Jamiesonite, Galena, and 
and on lode-matter, but occasionally massive. Madam Melba, 
Comet, Mastrie’s Broken Hill mines at Dundas are prominent 
localities ; it also occurs in less profusion at several of the silver- 
lead mines in the Heazlewood District and at Zeehan. Occurs in 
small quantity in a quartz reef known as Ragged Jack, about 
nine miles east of Deddington; Pyrites, Galena, and Stibnite are 
found with it as accessory minerals. 
71. COLLYRITE (?) (Hydrated Silicate of Alumina). 
A substance fairly answering the general characters of this 
mineral occurs in bands and patches in the cavities and fractures 
of the Diabase rock at Launceston. 
72. CHALCOCITE (Copper Sulphide). 
So far I have not met with specimens of this mineral, although 
reported to occur at Mt. Maurice, Mt. Ramsay, and Badger 
Head. 
73. CALAMINE (Carbonate of Zinc). | 
Occurs in small quantity at Heazlewood and Zeehan ; several 
localities are given in the Pro. Royal Soc. Tas. for 1854, but the 
identification is very doubtful ; is reported to occur at Mt. Bischoff. 
74, CROCOISITE (Chromate of Lead). 
A well known beautiful mineral, generally supposed to be 
peculiar to the silver-lead mines in Siberia. 
Its first discovery in this island was made a few years back by 
Messrs. Smith and Bell at the Heazlewood Silver-Lead mine. It 
there occurs of its characteristic bright, shining, hyacinth-red 
colour, in somewhat small, thin, aciculine bunches penetrating 
and often coating a soft ferruginous-clay gossan, commonly with 
minute crystals of Cerussite and Pyromorphite. At the Whyte — 
River mine it was found plentifully in the country rock, a soft 
