230 MINERALS FROM NEW CALEDONIA. 
This chain of hills attains its greatest altitude at this point, 
where it is 2,500 feet above sea- evel, and extends about 30 
iles E. and 10 E. 27° 
necessary reduced sections and diagrams, without which it would 
be difficult to explain them. Garnets with glaucophane, and 
crystals of amphibole, occur abundantly in these rocks, but have 
Leap. 
Galena.—The sulphide of lead ; from Coumac, in masses with 
a finely granular structure, reputed to be highly argentiferous ; 
the specimen given to me by Mr. Rossiter contained but a small 
quantity of silver. 
ZINC. 
Zine blende.—The sulphide of zinc : specimens from Coumac 
and the Baie Lebris, said to be argentiferous, are black in colour, 
massive, with granular structure, and in parts much stained with 
oxide of iron. 
ANTIMONY. 
Antimonite.—The sulphide of antimony ; a fine specimen of = 
massive variety from Nakety, on the East Coast, with coarsely- 
bladed structure like much of the Borneo ore, was contained im 
Mr. Rossiter’s collection. : ti 
© speci is coated in part with yellow oxide of anth 
mony, to the thickness of about half an inch. 
TITANIUM. 
Rutile.—The dioxide of titanium TiO, abad: of 
stallized in incompletely developed prisms, much ga . 
a dark hair brown colour ; in most cases the prisms are muc 
t of measurements being made with the apeanger ites 
