Cox.—On the Mineralogy of New Zealand. 433 
erystals.” This is the only instance yet recorded of the occurrence of 
Calamine in New Zealand. Zine also enters into the composition of Rich- 
mondite previously referred to. 
The ores of lead which have hitherto been discovered in New Zealand 
are native lead, Galena, Dufrenoysite, Mimetesite, and Bournonite, as well 
as a doubtful case of Pyromorphite, and red oxide of lead. 
Native Lead.—In the Geol. Reports, 1870-71, p. 85, Mr. Skey mentions 
the occurrence of native lead in the wash of a creek at the Thames. It 
occurs in the form of shot, but was found at the very commencement of the 
goldfield, so may possibly lay claim to being the native metal. 
Galena, Pb’.—This mineral is widely distributed in the colony, but has 
not hitherto been worked. The first mention of its occurrence is by Mr. J. 
C. Crawford in his « Essay on the Geology of the Wellington Province,” p. 5, 
where he mentions that specimens were brought by Professor Hochstetter’s 
party from the Kaimanawa Ranges. In the Jurors’ Rep. N.Z. Ex., pp. 404, 
5, and 487, mention is made of the occurrence of Galena in the Nelson 
+, and also pretty generally throughout the colony, but in most 
z 
Au 
ae 
8 
= 
cap) 
bey 
2 
: 
a 
E 
: 
F 
ood; and also at the Thames—this last district being again 
to by Mr. Skey and Mr. Davis. Dr. Hector refers to the silver 
at the Mount Rangitoto Mine. These comprise the principal locali- 
. which Galena has been discovered, but the only one in which the ore 
as been yet found in sufficient quantities to promise well for opening a lead 
ine is at Bedstead Gully, Collingwood, where some rather important 
its were discovered in the workings of the Perseverance Gold Mining 
any, but even these have received but little attention. Galena occurs 
degrees of '8€ from a very fine grained ore to a coarsely erystal- 
variety, and the samples which have been assayed for silver show a great 
in the proportions of this precious metal contained by them, but a 
ice of these will more properly be placed under the silver ores. The erys- 
served have been uniformly cubes, the octahedron never being seen. 
enoysite, Pb’ + 4 As? S°—Great Barrier Island. The composition of 
Sulphur hdl’ » it see RT - : 21 
Arenic. > OE 
‘ es z Z 512 
