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GEOLOGY. <br />. 3 <br />The recent purvey wide by the U.C.G..."..iS not ready for distribu- ' <br />t i on. . <br />T}:e country roc'r, consists of n r;neiSSie granite cut by in- <br />trusive d;;};eS of porphyry and a fis::ure vein Systcm having a general <br />f ' <br />earterly and westerly course: <br />The veins vary in vridth from n few inches to Severn} fart. <br />. The dip of the veins vary from fiG° to vertical~in Some cases <br />• !reversing their dip with depth. <br />T}:e vein filling consintS of an altered country rock in difC- <br />!erent stages of alterationrbeing a lig}a colored quartsose and feld- <br />npat}.ic mixture morn or lca imprei;nated with iron and copper pyritesr <br />gold bearing~gnd }sown aS rail}ing or concentrating orertot;ether with <br />a srwller vridtl: or strew}: of gold benring iron and copper pyriteS~ <br />,known ar. Smelting ore. Galena or lead otaphide is frequently found <br />~a990C1ntBd vri t}: the above and occasiona]]y Spi~alerite or sine nulph- <br />ide. <br />The vein system of this locality((}uru•ts Hill)}tas produced pony millions <br />in gold vttlueS and are rersarkable for t}:eir continuity vrith depths the. <br />I ' <br />',Cnlifornia vein being developed to a depth of 2200 fret. <br />~, <br />I' <br />i` <br />~. <br />^ <br />