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Last modified
1/7/2009 9:04:37 AM
Creation date
11/18/2007 11:59:06 AM
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Mine Books
County
Gilpin
Volume
6
Document
Inspectr
Suffix
E
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<br />ORE BODIEb AND ORES. <br />The Colden Cloud vein has a striY,e•nearly'~eastan'U~vres't:and`.dipn-~.to~~tho~north ;; <br />at an asu;lc 1•€ttiG},h};.:froili3G~9 to-51°.; ,s.}'s „ .`!r:n ,;. ~:d .. .r, <br />..n~,,. <br />The vein fri'1'ling:''i.a'li~'qulrt"zone=and'foldnpixthic!mi~xturayhighly mril2Eionvn and.car; <br />yiug nnsc}s froe quu•tz,tt icl:ly impregnntod eiith iron and coplser~pyni•tg:sysoinetimeb <br />accom}xusiedby"-'a- doom' od"'sol?.ii 'gold liearing` pyri~ten bsryixsg-~!inCtrid$r. d'xom~a: fee;. •i <br />Chen to tero~'feet. ~ ... .. .. .:i'. " i. <br />, <br />The gangue accompanying the ore in ,i soft crhitinh or pale greeisinhrook.connint-, <br />iug chiefly of a~ decorilp'ozed' or~ altored Feldapnthic.naterihlmixed •tvitGtt- quEtrts. and <br />r;hen highly' inipregrlted!rrith"pya'ites constitutos, a: mi11'ing.~or poncanilrating~ ore <br />Having value.^, from ~>u.00 up, <br />The concontrritea -ncamd of giyriten conntitutes,.the omrltdng ~ore~producing vflluea; .. <br />in gold,si.~lvr.r and in dome cnhetl copper. , <br />..~, <br />Totrard the nurfnca the nresdacompwn through the action'of atmosplrevicand chom- <br />ical agencies. T}ie rcn•,Ilt'of-this decomposition in usually-termod.:nurfuce"ore-. <br />and consists largely of a honeycohabed quartiz more or less.~otaisied-.eti,,tlt.thn~oxides <br />of iron containing the gold in a free state. <br />The ore at present talren from the mine is one treated by cancentratic <br />varying from v to one, to 7 to 1, the concentrates being iron pyrites, <br />The values in the above ore, range from 5;8 to 5;14 in gold. <br />
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