Show UTAH nr PROF n B 91 front the Engin engineering swi nd mining journal 0 of I 1 rb fib tle the ores orca of J f the mines DIMS thus far opened in the alio wasatch Va satch mountains fountains tire are largely composed of species resulting from the oxidation ol of es cs and ga lono it ith some earns calls of zinc aud and cop per all and r rrell a r a fa croall ardig isoland atma ely eold iron n and n g a ets a gobers occur in considerable quantity la in of them but tho ilia process of of oxidation has haa prevailed tery exten lively so 89 that tho char actor of the ores is ia the striking bankin foa fea lure or of mot most 0 or r th abo 0 mines in this thin rit laoc h chamber of the eama mine which is ia an cavity measuring ao far as explored about HO leu vertical by about 80 liy by feet transverse was found I 1 to 0 bo be filled exclusively with epiceno spa cies the product of oxidation of sul eul aphides hides and capable of removal with out the aid of gunpowder for the most part bo study of this mass masa reveals the fact that it is I 1 largely a ago ly composed of metallic ox oxides ides with balf but comparatively small proper tiona lien of carbonates and sulphates fortunately I 1 am ain able to present en an aD analysis alysia of an average sample of 82 32 tons pounds ol of first class ore from the emma I 1 mine made by james P merry of swansea april 1871 which is id as follows viz viz silica 10 W balver oil lend 91 11 0 35 magnesia 0 25 antimony limo lima I 1 0 KJ Carb oruo 0 act acid d 1 W 5 A r 2 am 91 manganese 0 is 15 iron iran sell nl water by ciffo 0 53 the quantity of bilter obtained fil arom OLD tin tb is lot of ore was troy ounces to the gross ton lou of 2210 2240 pounds this analysis sheds important light on an the iho chemical history of this re marl ablo metallic deposit ind and will mil aid us in the study of the iho of the derived species it is ii pretty cirtain that all the heavy metals have haro existed originally as sulp sulphides hides and we may therefore 8 state late the analysis I 1 thus bus allowing 8 52 sulphur to convert the tb heavy metals to this state slate SIR A 40 no 90 Z is aj ich h 1 62 al 25 ca aa il katr carbonic scid and loil loaf this calculation assumes aso inies that the be sulphides sulp hides areas follows Jull osva VIZ viz h abito 3 SO boman I 1 03 mindo PI pinto nto 83 05 1 52 CO this statement elo ludes the presence of any other gangao than silica mud and considering that the ores exist in limestone he be almost total absence of lime lima in the composition of the avera aber ORO ope mass i is cetlin certainly ly remarkable iho be amount of alica ilea found is ia noticeable since quartz is not teen as such in this his g great ecat ore chamber nor cor 80 fat far as I 1 con could find in other parts of the mine the silica can hive existed in chemical combination only in the most i quantity S since nee the bas bases es with which it could nave combined aro are present to the extent ot of less than ban 1 11 per cent nor do we ire find in the mino mine any noticeably quantity of laolia or resulting from the decomposition nor are there any fedj minerals it by i hobt probable probably pro bablo that the silica existed in estate or minute dif fused in in the sul as I 1 have seen been it in some of the unchanged c d silver ores of lion 1101 II 11 ill in tho tango ranse iho of chlorine cL lorino lod and of I 1 phosphoric acid in a the analysis cor Odd hell ell with wilh absence of tho the specie atch e and of which no trace inco could be found by the most careful among the iho contents of the mine the minerd speak of the chlorides chlor idea and the un so lave have repeated the statement that silver diver chloride lorido cb is ij fuad in tho the emma mine lut but the ores indi cited t to 0 mo me ns be such euch are chiefly auti anionic oc liers tho the jeneral general perhaps toul absence 0 of f abo be phosphates of le lead ain in I 1 alio llio 1 ity and dd oquirrh so 0 o for far as explored is a striking sinking peculia peculiarity rit of the minerals mine ralo y of abebe ranges oo on tho the other hand the absence of chlorine chIOrinO in llie mince of the two Cotton woodi woodis anil ana the merican folk foik is il iu in striking contrast with wilh tho the constant occurrence of horn tilter silver in tho the orlund and also in the southern ex ei tension tinb iou ot of the wasatch I 1 have sought fought in vin vain fur fr a trace race of this th u in fa the districts or the wasatch just jlii hamed and tho the occurrence of is ia extremely doubtful loly bilic acid however chiala pretty kunii firmly disseminated iq in the be ducts or of the wasatch wf iu in the iott furm of although it occurs occure I 1 ia c minute quantity it n is rarely absent and ny may be regarded cil us ILI a miner mineralogy alog ical characteristic of tb abo of the two wo colton woods aad nd of the lh A we fulk fork for I 1 or th lb Is reason a fuw few particulate v will be iq in place here ile is u found associated with calamine emillis oDit ce cervile ruile ceri Leile me lac hilf bite azurite and note more rarely alone in ia lull little cavities ca ilie in ilia in ID the be emma mine mine vu aus s or ceodes geodes are anally found lined with jl applegreen apple anle green calamine calami DC rarely crystallized often brownish and sometimes colorless col urless but iD varia 4 there elst tec cu trally ilo ieuan TF population ho of iho T rr of it the united baates a bet areca A homsie ad arr atud of naper m terror ami as I 1 im am U from the bo zetril edeas orra to bo ch londes not dot so perfectly id do 14 to be uy bly associated with wilb the adamino cil amino encloses and covers tho the crystal ta isoif of ivul which form a lining of considerable 0 the wul aul fen finito to is ia in thin tabular crystals of a yellow y c ow color resembling the conn colin thian variety tandy of chii species the crystals cry elala ore are very brilliant and perfect I 1 but quite minute rarely two or three mill in width I 1 nod and not over item in ill thickness thi clinco often or t on less ess they are quite juite abundant abunda Qt iu in this association 10 piece of the llie calamine cala which I 1 have teen win being without them they sometimes but rarely penetrate through the glob ulca of the calamine calai nine so BO as to show abow themselves on tho the upper surface of that species es cut but the calamine has haa obviously formed magacs nin saca around tho the wal a crys crye til ta of this ibis species bein being 9 often seen en arming the nucleus of tho the calamine cal amino CUD globules glo bules chese facie arc steer of interest in tho the of those species I 1 iho he order of production has haa obviously leon been first the iho ceru ecru aito sito resting on ou iron manganese and noi other metallic oxides next the be crystals were deposited upon and among this the crystals or of ceru cerusi site tc and iati 7 came the calamine cal amino crystalline talline it at first crit and as it accuro cristallini crIs becoming li brouil and amorphous completely I 1 yen enclosing closing oud and capping tho the other r s Wulf V onite occurs oCcur alao salso in this mine as likewise io in the iho flagstaff the sav go and robert I 1 amet without I 1 the e eglantine but never as 13 far as observed without COTUS ite and other carbonates la in tho the savage vage masses of with various ox olisca ica d are interpenetrated interpenetrates Inter penetrated by the tabular crystals I 1 of although forms a very minute factor of tho the entire ore mass in these mines by the liw of mineral association it may be considered as tho the characteristic species of the ores orce of these districts occurring in i n iho be sian lime stones so far as I 1 kin am informed or have observed wul aul lai has not been hitherto found in any of the other mining districts of utah but by the be same law it may be reasonably looked for whenever deposits of of ep ene minerals are explored in tho the samo same geological ecological and mineralogical relations in the wasatch range of mota the oxidizing and agency which has baa a acted tad upon U poll tho the great oro ore mass of the emma mine whatever kloat 0 vor it was wag las baa performed it in work wi with t h remarkable thoroughness A 1 careful nr la 11 w of species from the appearance pe arance 0 of numerous largo large blacka of ore forming solid boulders in the iho general mass mabb a concentric arrangement Is id easily recognized on breaking mas mosses es acro acres s the fr fresh cs it irao frac tures disclose dis cloEo a darl dark center which consists foasis ti almost entirely of decomposed sulphides sulp ab hides des composed chiefly of ecru tile lila te hekt blackened kt ned by argOn argentite tite and metallic silver in a form this dark cooler center chiefly of 0 f cera site 13 often of g a benite in iti im fracture next is ul usually a zone of 3 and orange allow achre ochre often quite at times only staining the then follows a narrow zone of green and blue copper malachite azurite with rarely wulf onite then fallows cerus i ate sometimes stained with antimony auti mODy bohre and not fluently with wal w ulf euite fente outside all are the giroti and ancee this concentric arrangement I 1 have ob observed arved in a great number of oases and the iho abol aboc 0 order 0 f species whilo while not i is a to accurately the general geri eral arrange fedt will crystallized species aa 25 mineralogical specimens are rate rare in this ali m great biaas but the following may be recognized ad aa its chiefs com ponente gaylan e py ritt jamo mi argenti tC arilo ant monal He MiLD tite limonite wed wad kaolin Ct rufic lina linarite af uric I 1 nial niao achile cn c e those most Aund abundant antor or hot belt crystallized aro are in ia italics italic ibis list no doubt bo be extended as opportunity port unity occurs for the more careful stuby of tho the ores the great mass macj U of f bicich amounting to many thousand tons have gone godo into commerce without on t passing under any mineralogical C 0 in a subsequent parfir f will le pre somo remarks upon the oquirrh range aud and some of its ores alad no cices biccs of minerals rala from other districts of ceulah utah eliw F W jary 1872 |