Show MINES AND MINING EDITED BY F. F W. W SPRAGUE REVIEWS NORTH SIDE COEUR D' D ALENE GAMP CAMP Herbert S. S Auerbach Makes a Close Study of Somewhat Neglected Reg Region ion HAS ATTRACTIVE FEATURES t Deposits Promise to Become a as Productive as Those of South Side Sidel An Au exhaustive review of oC the geo gee lo logical nIH and mineral features of the lie north side Id of the Coeur dAleno district dis dis- triet b by Herbert S. S Auerbach l Is contained con con- in a t recent number of or the EnIn Engineering En Eu- In and Mining l Journal The writ Titer or who is a ton son of II H. has lias achieved not a little su success us ZIS an engineer and a amino mine manager er and his hie article evinces on his part lart lart a clo c stud study of a somewhat neglected le region lon His Ills conclusion lon Is that the north side of or the tho dAleno district contains deposits of lead lend silver ol and gold which promise to become as productive c as ns those thoo of ot the themore themore more famous south side His Ills review Is herewith reproduced In part The district embraces that mountainous region in the lie north north- northeastern eastern portion of county count Idaho which I Is drained b by the North and und South forks of tho the Coeur river and their numerous tributaries Tim Tho Iho North Korth fork sweeps along alonS' tho lie northern and wC western borders of the tho district while Its Us southern limit I is h defined b bv ii the Q a St St. Jon Joe 1 ranee ranle i Tn To io in tho cast east rises on n a r d ch chain I of T mountains marking tho the dividing line lino between Idaho and Montana These are arc spurs spun of the Bitter Root range known a as a. tho thu dAlone mountains and from them the district tal takes es its name namo The district has been locally sub subdivided divided Into the North Side and the South Side a subdivision which hinges cs upon the fact that the region Is traversed trav tray cred near its center b by a a. ridge of ot mountains trending east and west and giving rise to two drainage basins drained b by tho the North and the tho South forks i of or tho Coeur dAlene river rl re re- re Sr 13 On the South Side lie Wardner Burke Mace Gem Wallace a 11 ace Mullan and md others othel camps with their mines which have made the Coeur dAleno dAlene famous as a lead producer while on the North Side arc Delta Eagle City Murray lurra l Littlefield and Haven nil all big biS' gold producers In their da day and a alar lar largo large e section of or semi developed minerai mineral min mm- eral count country destined to add arId greatly to to- the lead output of or tho the Coeur and to the gold and copper I I production of or the h. h district of or North orth Side SIJe The mineral resources of the SouthSide SouthSide South SouthSide Side have havo received occasional mention in periodicals and technical publications publications while tho those o of or the North orth Side have haye never noer been more than touched upon The Tho North Side Sido Is divided into six Ix mining districts that chat Is Summit Coeur Eagle Beaver and Union and embraces a a. gold n. n lead- lead bolt belt It con comprises 1 silver stiver and LU a copper 1 succession on ot of serrated mountain a a. ran ranges es and sharp rid ridges es whose whoso loftiest t peaks rise rise- to a a. height o of moro more than feet eel The general topography and ru rugged ed hills of steep Is 15 made up tangle of or tortuous valleys val val- amon a tact set and narrow gulches Intel Intersecting leys The anglo angle of or tho the hills hUls rising ravines rainee these affords e excellent abruptly from exploration on by opportunity for deep the mines mmes ar arc milts and atHI most of worked in this manner mannel beer region have The rocks of or the l l tn to extensive disintegration r I uJ covered with detritus the are depth ot or to a localities in many mum and only in the most of or feet hundreds places does the unaltered precipitous Tho The detritus up show country rock teen been washed into of or the highlands has quantities tho the main valleys streams in III such posse possess but but buter that the larger hanger fall and in lower portions er very slight become meandering of fir their theil course courte portion of or major streams During the supply Is plentiful the water the tIle year cm summer the advent vent of with time the a hut but from July 1 to October usually lasting lusting low and at al the tho creeks run very 1 times are arc almost dr dry Faulting Paullin Is Common has been subjected subjected sub sub- entire region Tho The dynamic metamorphism meta meta- to extreme and contact regional both an and at the time line H of the these v exerted e disturbances caused the tho Sl C great U. U pressures I and joints fh These rheo o cl cleavage cleavage- e places angles to the occur at right generally fresh fractures In tho lie rock dip Up of perceptible percept percept- scarcely ot often m are ale the joints weathering progresses ible 1110 but as aF an and the rock grad grad- gradually the they show plainly Although foldIng fold- fold falls fall to pieces affects the deposition deI tn lug Ing un undoubtedly deposits it lie gold tion lion of ore oro in tho influence the de- de deposition de de- does not appear to ores Faulting lea silver lead position of or and antI in many cases is la very cry common intrusions the due to the eruptive c right angles j occur at al faults generally structural faults faulLs to these Tin The main been heen formed subsequent appear to have of ot the 01 ore quent to the deposition frequent and generally Fissures are arc or less loss de- de de de- a a. greater mineralized to In a formation the cut They gree direction southeast northwest general seems poems places sizo in mail mau many and und their to the tile I to tu S. S depend iiI upon th their h proximity i cs commercial of f types t Jes general Three Placers and kno n bodies aro are deposits de- de ore oro ro gold Bold old l Ica lead d veins yielding vein fill fill- and copper oreS oreg Of or f posits consistS con l ts lug ing of the ROW gold old V de Y and awl calcite slate wholly the o ore lie lies c chlorite As a rule nile les nn although H it itin Is 18 in time tho at th the coma contact or of UC the Known to 10 occur and amid sedimentary formation syenite In ill Bedded Gold rold in veins found T- T gold old arc Inte d with in striking north and atul nd In Ie 1 slates In t and dip to the country Is a a. amany there thero I ho instances the tho many nany both blight alight t the gold veins or of ie dip air lp strike anti and the thc strata Although h r and their I veins S occur lime iho form fissure or of o gUre 1 Sw gold depOsit sit is thebert the tuc vein intervals inter bert bed varying is found oun aHK 1 at chim Ore Oro s iii I 1 In fit hootS or shoOtS among v cen th m- m luou e s u e v. v between ar urea area a barren barYen bar bar- the tho 1 cy of or poor or generally consisting The i shootS g U I pitch 11 In Yen ren vein matter sometimes occur oc- oc direction They denned defined cry overy a well cur as at bodies lm ing but arc are shape l or 01 colum r in any distinct often entirely lacking form Q Gen Gen- or of outline O or 1 r regularitY iro are aro of greater deposits ut or r orally y tile the ore other veinS Si w ii-w f an imd value where the n main a vein I branches s Inter Intersect 31 avo often round found rata occur In iii n l the lons o deim l' l or or Ome Is II rock rim Tho rock omm nt 1 Iho I l with In 10 hr tim lh 1 f nil id hi hut this does iain bUlin Indication of oC gold I I not alwa always alway H hold for fOl places are known I where silica abound but tho the Hid metal rails falls quartz quart generally ca car j ries persistent and amid rich gold Sold ore Tho The gold sold is IR often ofton in a a. ver very mel finely I divided tute t ite It Is la found about in flue und and a large pai part j of r it appears to be locked d up mecham mchan In the pyrites I It varies In fineness rillene fine rille- ne ness s between and slid DOO OO the re rc remaining rc- rc naming units con i consisting tin of nr lead leod allvon all sil silver sliver sli- sli ver von and copper Tho The gold oid as os a rul rule carries little silver Tungsten Tung-sten Is 15 known In several eral properties properties prop prop- and occurs in considerable quantities i In the Golden Chest Chelt mine which produced 15 tons ions ons of oC In 1907 1907 the timo ore assaying from 61 ti to 77 per pel cent WO YO At the time Golden Winnie VInnie tungsten is al also ahro o found generally gen goen- as a concentrating ore wit with occasional pieces the sie sl e C of or au an apple Several Se tons tuns of or concentrating oro ore tim uro now flOw on the dump at this mine mimic was frequently found In th the sluice boxes pIn placer pIncer cor operations were carried on In Trail and Pony gulches In Eagle gulch Dunlap Smith find in their boxes and one small vein has been heln uncovered unco ered near the lie Columbus group roup end I Ore Oro in Quartzite Quart Tho The silver lead ores generally lie in III It northwest fissures fissure's cutting acro across tho ho country countr formation Th They Thoy p occur as plain fI fissure fillings and amid as tic deposits A distinctive feature of ot pf tho ho Coeur lAlene lead deposits isho Is the ho a association of or with tho lie liere ore re all the great ore bodies boie found in quartzite formation I Although networks of or quartz vein vein- lets its often penetrate tho the lead ore the veins elmis do 10 not car carry an any great amount of f quartz Lead ore oro oc occurs urs in shoots I similar to those carrying gold Theal The Tho lead al shoots hots often Increase In lii width and mid length as d depth I H hi attained l. l Golden Chot 1 Property The Thc Golden Chest series eries and the theother Mother other Lode veins have havo been the heaviest st gold sold producers hut but numerous numerous numer numer- ous LIS other lodes have havo contributed considerable considerable con con- amounts Tho The Golden Chest group roup lies about abou a nile mile due last east of or Murray l and embraces embraces em em- braces 46 claims mo mostly patent patented cd In It the tho heart of oC the Murray 1 gold belt helt These claims cover coer Idaho lull hill Chest Chesthill Chesthill hill bill and a 0 large portion of or hill They are arc operated IJ by tho United Gol Golden en Chest Mining and Milling l company compan a eon consolidation atlon of the Golden Gold Gold- en Chest company compan Katie Dora com corn Butte Hutte pany Paymaster company compan Creek Creck Placer company and various smaller interests The Chest hill stands at the head of or Reeder gulch slightly lees leis than a half haIr mile above the stamp till mill and attains a maximum elevation cle of or about feet Tho The earliest workings ot or time tho property axe arc located upon this hill hm which has been hone honeycombed combed with mithi many miles of tunnels cro crosscuts cross cross- cuts cutE and shafts The hill is composed of ra slates and with Intermediate intermediate diate varieties of or these the slates pre pre- I dominating of or Gold Cohl Veins A series of Important gold old In this hill bill and amid these veins reins aro found n t. t and i q in strike dip dl with 1 11 tt tho inclosing country rock of The veins possess a general strike north 15 16 degrees west and dip to the west at angles varying from 30 to 60 degrees The uppermost of oC tho the series Is the tho Gold Cold Brick rot oln which ranges from six Eb Inches to tl O feet in width About feet teet beneath Is s tho the ott Clag-ott vein eln two to nix X feet In thick thick- varying ng from About 2 t tc feet t below the tho C Walt Wall vein which carries carrica carries car car- Hanging la is the tho ot or Inches to 1 12 feet three ries rica ore from Below tho the Hanging Vall Vahl vein 1 1 et ef eti I separated separate from it b by 30 feet o and slate Is the bearing sold i stratified fled a width ot of vein eln I feet From this to three Inches three has been rich ore very ery vein vc some taken veins are aro and The Hanging the Katie and anti th the locally known as between these l Dora The slate filling threads with quartz seamed Veins eins is 1 in iii manY places Is and nd stringers anu a twisted Besides s and 1 fractured an badly mentioned several sc are the veins portion of or orthe exist In LU the opper known to they have o not been beon the hill but as yet explored Mother T. T Lode lc Series mountain of Ophir Tho The north slope height of or 1500 feet abruptly to a rises Prichard creek creel of or tho the waters above mountain directly across and in this Golden Chest is from remit the tho thio creek series Tho The formation formation forma forma- the tho Mother Iother Lode Iode flat and tho UIO strata almost tion toil here is of consist of or thin slates s layers with occasional and The Mother quartz veins comprises two veins eins conforming conforming conforming con con- Lo Lode e series country formation formation forma forma- forming to Lo the general from each other tion ion and separated of about O distance IJ by a veins eins arc are known as two feet feel These tho T r n. n as a c s A I nd i or u tho the Upper Tipper a amo anu Lodo Lode veins Their and amid Moth Mother r uro mo Box northeast and amid they strike Is general at an nn anglo angle varyIng varying vary vary- northwest lip flip to tho ho horizontal to 20 o degrees The rhe Theore ing lug from shoots shoot in irregular ore Is generally vein west vest The Time la pay raking to the two and six Inches in lii ranges between without doubt a width The Tho veins are encountered Inthe in inthe Inthe continuation of those Chest ground lI the Mother Io Lode c Box The rue Treasure and Yosemite com com- companies Occident Daddy these veins for forman on omi operated panics extracted moro than and man many years year low grade as asa asa asa proved They rhey contained occasional whole but much a rich ore extremely pockets of drifted drifted drift drift- The veins were of It free gold fold several feet reet and amI ed cd upon for employed As Aa tho the flat Clat sloping was into the time hilt hill theore the theore theore followed veins vein were too ha base laSO o for tho ho stamp ore became and the mines were mills to handle closed |