; a 
Cox.—On the Mineralogy of New Zealand. 445 
Peacock Copper, which is only a variegated variety of Copper Pyrites, 
often occurs with that mineral. 
Malachite, Cu2G+H.—Green carbonate of copper occurs as thin encrust- 
ing films on some of our copper ores, and also in the cupriferous schists of 
Moke Creek. It never, however, is found in a crystallized form, nor in 
sufficient quantities to be of any value. 
zurite, Cu’C?+H.—Blue carbonate of copper occurs even less plentifally 
than ereneeria but under similar conditions as a thin encrustation on 
some of the Nelson and Great Barrier ores. 
Dioptase, Cu Si, occurs as an encrustation on the Nelson copper ores,, 
and also at the Wonder Claim, Thames (Skey, Geol. Rep., 1870-71, p. 85). 
Chrysocolla, Cu Si+2H.—Is very common encrusting the copper ores of 
the Serpentine Belt in Nelson, where they have been exposed to the action 
of the atmosphere, and is far more commonly met with than either the 
green or blue carbonates. 
Tetrahedrite (var. Richmondite), BR’, R’.—This ore has been obtained 
from a lode at Richmond Hill, cbt net and has yielded from some 
Specimens as much as 1,792 ozs. of silver per ton of ore. 
A complete analysis of this mineral is as follows : 
Sulphide of Lead se =< as oa ) BGA 
PP Antimony ips oe 1a 2 
= Bismuth .. -» traces 
o Copper . . : 19-31 
Pe : : pape PS 
pe Zine ee is - 587 
i Silver oe a - es 2°39 
a Manganese ‘ bis 52 
100-00 
Its mineralogical characters have been described by Mr. Skey (12th 
Lab. Rept., p. 31). Itis massive, nearly homogeneous; cleavage irregular ; 
brittle, structure confusedly crystalline; colour black generally, but in 
parts reddish; streak dark slate-colour; hardness about 4-5. Specific 
gravity 4317. At a low heat (a little under redness) it fuses readily, and 
in parts intumesces considerably. The analysis gives the formula Sb, 8, 
+6 (Pb, Cu, Zn, Fe, Ag, 8) according to Mr. Skey. This forms a valuable 
ore of silver, in addition to the copper which it contains. 
Meratuic Miverats.—Class IV. 
Noble metals, reducible by heat alone. 
This precious metal is widely distributed in New Zealand, and since 
oo 0Z8., having & — eg siphon —— 
oo Mi roae Native g 
