10 MINERALS OF TASMANIA. 
good colouration, Mainwaring Inlet, West Coast; fairly common 
with Cassiterite and other minerals, Star of Peace Mine, Cascade 
River; occasionally occurs in limited quantity in stanniferous 
dykes, Blue Tier. , 
At Mt. Lyell this mineral occurs in a highly argentiferous 
form—often giving assay returns as high as 2000 oz. of silver to 
the ton of ore ; it is also to some extent auriferous. 
Argentiferous Bornite is of very unusual occurrence; but a similar 
combination occurs at the Red Mountain, Colorado, U.S.A., 
where it is also associated with Stromeyerite and Fahlerz. 
42. BISMITE (Oxide of Bismuth). 
Of very rare occurrence. It is found as a thin yellowish earthy 
coating on other Bismuth minerals at Mt. Ramsay ; in arborescent 
crystal groups, occurring in the cleavage planes of country rock; 
ghee of a greenish-yellow. Hampshire Silver Mine (W. R. 
ell.) 
43. BISMUTITE (Carbonate of Bismuth). 
Usually occurs in whitish to yellow amorphous and pulverulent 
masses with other ores of the same element, and sometimes as 
waterworn nodules in alluvial drift. Here it is of unusual rarity, 
having so far only been obtained in minute coatings and blebs 
at Mt. Ramsay, Mt. Reid, and the Hampshire Hills. Said to 
be occasionally met with in drift with gold and Native Bismuth 
at the Ring River; has been found somewhat plentiful in 
stanniferous drift as small waterworn slugs. Iris River, near 
Middlesex. At this locality it has recently been discovered in situ 
in a small lode or vein intermixed with quartz and the sulphide of 
the metal. 
44, BISMUTH, Native. 
Abundantly distributed throughout a sub-crystalline black 
Hornblende or Amphibole of massive structure that occurs as 
an extensive lenticular formation at Mt. Ramsay. The metal is 
freely distributed in small irregular particles and flakey masses, 
varying in size from microscopic grain to pieces weighing several 
ounces. It occurs associated with blue and white Fluor, Scheelite, 
and Axinite, with the metallic minerals Pyrrhotite, Chalcopyrite, 
and Pyrite. The mass of Hornblende occurs as a contact formation 
abutting upon Granite on the one side, and a Dioritic rock on the 
other. At Mt. Reed this metal has been discovered in quartz with 
Fluor ; it has also been obtained at the Blue Tier in granite ina 
lode or dyke with Cassiterite and Molybdenite. Someof the alluvial 
gold obtained at the Ring River is said to contain this metal as 
an alloy; it would therefore approach the substance that has been 
named Maldonite. Although Bismuth is commonly auriferous it 
is not so at Mt. Ramsay; the gold at that locality was obtained 
from Chalcopyrite and Mispickel. 
