60 THE PROSPECTOR'S HANDBOOK. 



compactly cemented together as those deeper down, and 

 have a reddish brown colour on the outside und in the 

 cementing material. 



In depth the conglomerate is usually greyish, and in the 

 hard siliceous cement small crystals of iron pyrites arc 

 scattered about. 



Mi mica and Mashonaland. Quartz lodes in diorite, schi.-t--, 

 granite, &c. Gold is sometimes found scattered about in 

 diorite. 



A.M KHICA. 



Canada. In alluvial deposits above talcose and other 

 schists ; in lodes through granite, schists. In fahl-bands, 

 &C. 



In Ontario the gold-bearing veins are usually in Huronian 

 (pre-Cambrian) country rock. In some places the gold is 

 found disseminated through schist, porphyry, <&c. 



Nova Scotia. In quartz lodes through serpentine ; in 

 saddle reefs, not unlike those in Australia, &c. 



British Columbia. Lodes in diorite, between dykes and 

 diorite, &c. 



California. In extensive alluvial deposits at the base of 



oajvactoTte. 



'curse Goldfiearunq Gravel/ 

 \ Loose* Cfolddetzrtfig (} ravel/ 

 Coarse, GoUJUbearvn 



\ t>o/ 

 \ fitter. 



\ Coarse uonuoearvng 



CT 



FIG. 39. SECTION OF SPANISH PKAK DEPOSITS (CAUFOIINIA). 



the Sierra Nevada, in the beds of modem and ancient 

 streams, in magnetic iron sand, in lodes through granite, 



