Auriferous Quartz.—Tuapeka (from the Blue Spur.)
A mass of quartz, schistose, and other pebbles, mixed with much water-worn shotty gold, cemented together by a chloritic base.
Presented by Mr. Nichol.
In the form of minute globules, mainly more or less hidden away in the crevices. The dark veins contain, in addition to mercury, both copper and sulphur.