| Show TELLS OF VAST riv ER M great amoel of meral eral wealth i this c fie a wits development new processes make me rice Rec recovery VT every of gold more the th s placer resources of the colorado r river i v r and Us its tributaries an are in te described in an article written by 11 II A strauss a prominent consulting engineer of salt bali lake city the article will bo be in incorporated in a pamphlet telling of mineral rt resources sources soon to be b issued by the salt lake chamber of com merce it follow follows the tate state of utah contains con taini important placer deposits of the precious precious hietal metals and the rare earth this is not generally known principally princ pally due to the fact that innumerable efforts made in the past to recover the val beg from these places have failed for reasons outlined in n the following within these placers there have been identified as occurring in commercial quantities gold platinum iridium irid lum ost osmium alum palladium and other metals of the platinum group and also monazite carrying fhe the rare earth tarth in metal etal thorium in addition the almost proverbial proTer bial black sand sands occur in exceedingly large quantities in certain of the placers in fact in such amounts that where they can be ship shipped cheaply to the smelters the iron of which they are mainly compoi composed ted may easily pay par if not the entire at least a largo large part of the coat cost of the recovery of the precious metals these black sands containing principally magnetite with and and heavy silicates such as garnet and zircons are worth considerable as a fluxing factor PLACERS classified alluvial placers erg if it is well known are placers contA containing inive values that have been beep carried greater or lesser distances wala by action tion of raffi in other words alluvial placer are pip cers containing gold or precious met also found in association with material they may be regarded as the ordinary typical placer and may consist of the stream bed itself j or gravel or sand bars that are at lit present exposed in the stream or on the banks or finally bt they heyde may b be ancient gravel 0 or r sand sand bare at deposited by the nver river ages ago but which may now be far distant from the stream itself elivian ptA ceh kv on the other 0 hand are placer placers that as a the have been deposited by the the value bearing rock h o 0 pa place to a greater or r lesser 1 depth and shifted by the wi wind nd if hefted at ail all in other wa worde S th they ey are distinguished from all al luvian VIA I 1 lacers by the fact that th they at are win wind shifted di depo elta its instead af of water shifted decoste depolite depoi ite Al luvian placer in utah are arvio und in the bingham district on hn the cole colo rado rad arver and on ita its tribu tributaries Lades the tho green the grand and the san juan riven rivers elevian placers place in utah are found near the label in grand county in the arys rale dis brict in lit the henry mountains in carfield county and in a number of other high lying laytn mesas in vatious varied parts of 0 the in the cae case of the tho river ver place placers that iff IA I the he 0 al luvian platen both bench 1 and tream placer placers occur and in the cale case of the ela ir deposit deposits both ap entirely tirel dry cerias well aa as placer placers of t this Is type with some water available cipek by are found in vari vali ou ous parti parts of the state b FINELY DIVIDED in the case of the alluvial diperi lacert throughout the state the fold old and ana platinum I 1 binum tinum wherever it der ia is bolund found in an sin exceedingly exceedingly exceeding lf finel finely divided t ded state staw in fact the go gold d of t the s al alluvial uv de of utah is I 1 quite general ly so 0 o very fine that it tj almost safe to make a general statement ment effect that au all utah alluvial gold told Is lot of the ad td called flour bout of 0 flake kiil type even though there are a few exceptions but even where these excel alun hocur cur there is no tio record avail able ao far AJ the writer kouw knows where the larger type of al luvian gold told haa has been found in utah it if Is a well known fact that a sin ge 1 color of which two thousand thoma Tid may be required to equal in value one cent 1 is easily discernible by the naked eye in the miners minces pan and gold of this decree deme of fineness fi or cloe clo coe e to 14 it ie is a common occurrence in certain river ers of 91 utah the washing tirs or rather continued on page four TELLS OF VAST PLACER RESOURCES continual continued from fint first pace page the in a hand panning octra tion lion in on streams of utah which may show cyeral hundred tolore 1 in fore ore nut not always an of if 3 arat n at value wh finely divid divided til gold which may hive the appearance of an almost impalpable powder is exceedingly to recover by the ordinary fold cold placer sluicing method methods this ills 2 principally due to the fact that unless the buoyancy of such extreme ly fine particle particles tan can bf be overcome and they be caused to kittle by gravity alt the stream of water and rand in which they are contained move moves along through tho sluices they will tend to he be carried in the moving column into the tailing tailings and lout lost PROBLEM DIFFICULT right here ii in one of the principal problem problems involved in the recovery of kold sold in the utah alluvial fl placers lacem this problem as indicated in n the ton fort going Is I 1 therefore one of concentration for if f these finely 1 divided values can be concentrated by ui table devices that Is to bay say savea from kolner over into the tailings there remain remains then only the problem of recovering the values from the for or which a satisfactory process is now available ifa K however hovi ever in addition to being in an extreme jk finely divided state these gold particles are also covered which Is a common occurrence in irl utah with a thin film of allica illica or a film of oxide of iron or by any other foreign material the problem of recovery is still further complicated G gold id so 50 covered resists absolutely nd completely amalgamation by the ordinary adl nw M methods methods known to the min errand erland were it not for the fact that a process which has recently been de in utah will absolutely in and completely recover ROM gold covered with euch such foreign ma jenals the history of utah a alluvial blui 1 mai placers keers would still go on recording re cordin dormant properties torta ining values thie this condition has however now been completely changed and concentrating tra I ting and recovery processes which can call be successfully applied to placers containing values of such character istina have made it possible to bang the state of utah into the cold gold placer producing column PLATINUM it is a well known fact full bulb sub ab 11 by tbt th investigators of the U Vb logical survey sec U S G Bul bulletin litin page 11 that 10 tim occurs as above stated in it ber of the streams of utah the anter nt er during the past yeal geen brought into close touch with practically all 0 ot of the known placer uto and inasmuch as the principal object of this little essay Is to out the placer resources of the state the following op proximate locations of placer placers and their charac are list listed here beginning with the green nver averin in northeastern utah interesting valuable and extensive areas of placer ground ars Jound close to the river bank near jensen and ok little far inthe to the well known horse shoel bend of the green river other deposits dep ekiso near the town ouray on the green river and on almost eatery clearly denned bar on the gren groen river right to its it junction with the grand river at cataract canyon P at this point the grand farid the green come together to form the colorado and a it forth further tring string ot of inter ecung placers is found at numerous places from here south to the ari arl tona border on the grand river just south of the town of cisco osco the denver A Grande western railroad in grand county there is a series of placer placers containing relatively large values and extending all the tho way youth from cisco to cataract canyon where the grand joins the green I 1 bounces diversa DIVE ItSE i the dolores river likewise which tomes grand river from the ewt eaT just juat below cisco and ind which is a re enof far fail greater magnitude than Is i generally known Is also gold id bearing bearin ff although the gol gold d which it brinn to the grand and colorado rivers comes from a different source than that which Is s brought down to the colorado by the green and the grand the same statement hold holds for the san juan river farther south soum the principal allu vial placer deposits de of the stati to which should be added of course biniam cannon which is a typical gold placer ared and nd from which ac for fordin clin ff to public record more than killion dollars in sold gold has been extracted tince since 1865 the eluvia placers are found in fn grand county wayne coun ty and garfield anty having their stour ces in the henry penry mont contains ains and the la sal contains mon mont uina ains in every case in utah ko far aa as cnown these elevian place placers irs owe their origin to erosion of the gold ledges contained 1 in the mentioned which eroded aas ea the slopes lodgment in more mote jor les the foothills or on th the i hag has this raa that it still often to the particles of of the ledge tham beyond any question it its orian and its r nearess to th i t godree MATTER FOUND in a number of caede ae an poin itil out above thi this material hai has sett lec down on the surface of high mesag no water reaches it t except that duo due to in other cases small 11 stream Itts flow through the value bearing areu area or alongside of it but their action ha has not yet been of sufficient duration to carry the value values much 11 th thi immediate ter tern lory tory thoroughly typical of ouch such an elu clu vian lacer in I 1 the area traversed trave reed by a 11 little te I 1 c stream known as crescent cret amk k in carfield county toward towards which the eroded from the gold bearing henry mountain ledgen ix in working its way to the col orado the contained in thin this area a an r t bulto alt rich but the characteristic teri te stica 0 of 11 th the e bold gola arc are euch such that it doce does not lend to ordinary amal smal Ka ga matlon mation processes eg for recovery and ax as a consequence the values have lain undisturbed notwithstanding the fact that knowledge of their existence dati back for a considerable number of year ears jurinic burink the past year after r the recovery process for rusty gold above mentioned had be become corric general ly known thie this little stream together with the area traversed by 14 it hill ha been literally plastered with acet placer claims and active preparation I 1 a be ing made by a considerable number of operators for the recovery of the value values therein contained the tremendous latent value of the cold gold and platinum placers of utah may be inferred interred from the fact act that a 1 recent careful investigation of the areas near jensen utah on the green river nude made by an associate of 1 the writer has developed the fact that this restricted area alone covering not more than a few thousand acres of dredging area contains very conservatively estimated values in excess of fifteen million dollars I when the nu nume huus other similar I 1 area areas traversed by the green the grand and the colorado are listed land and tabulated th there ereis is no hazard in making the statement that literally hundreds of nul millions lions of dollars of values in gold and platinum in fn pla deposits are embraced within the I 1 confines of the state |
