MINERALS OF QUEENSLAND. 2a 
wood !!, associated with galena from 120 feet from 
surface (C); Ravenswood ! !, on foot-wall of a lode 
carrying chalcopyrite, sphalerite, iron pyrites, mispickel 
with gold and quartz (C.); Golden Bar, Rosewood, 
Rockhampton, with auriferous quartz 86 feet from 
surface (C.); Advance Reef, Norton Goldtield, Glad- 
stone ! !, with iron pyrites and sphalerite from 180 feet. 
The same vien occurs in the adjacent claims on this line 
of reef, sometimes the calcite vain is on the hanging, 
less often on the foot-wall of the reef (C.): some of 
this calcite is nearly transparent, one small piece was 
sufficiently clear to exhibit double refraction. The 
calcite vein is about 3” thick; Gympie Goldfield ! },. 
with auriferous quartz and iron pyrites: ‘The manner 
in which the crystals of quartz, calespar and pyrites cut 
into each other and are indented by the gold which is 
in other parts moulded to the angles of the crystals, 
shows that they were all deposited at the same period ; 
while the lime, taking the form of calespar, indicates 
that the deposition was at a low temperature” 
(A. C. Gregory); Victory Lease, Charters Towers !', 
in pellucid crystals in fissures and vughs in the walls of 
the lode or reef : these crystals are so grouped together 
that only one set of facets is perfect. These facets are 
eurved. Three of them grouped round the principal 
axis and termining in a point form the only part of the 
crystals that are visible among the whole sample raised, 
(C.); Victory Lease, Charters Towers !!, in opaque 
rhombohedral crystals, on auriferous quartz (C.) ; 
Gympie ! !, with quartz associated with gold and gold- 
bearing sulphides (L.); Kilkivan !!, with quartz and 
auriferous and argentiferous sulphides (L.); Glenlyon, 
near Stanthorpe ! !, large beds of limestone containing 
caverns with stalactites and stalagmites (L.) ; 
Warwick ! !, black and white limestone (C.); analysis. 
by (C.): 
WHITE BLACK 
Moisture ... = 1:10 1:29 
Carbonic acid oO 43-05 
Lime 54:66 54:72 
3 
Peroxide of iron gxtyh O35 0:37 
Magnesia Sy HOrLs 
Insoluble residue il 
100°93 100-95; 
Potosi claim, Tinaroo district !!!, limestone used as a 
flux for silver-lead ores (C.) ; analysis by (C.) : 
