Show GEOLOGY AND MINING it is conceded by every intelligent mining man that certain physical conditions are essential to the actual or prospective value of mining properties there ther e are maranv mal iv who scoff nt at the iden idea of applying the principles oady of dynamical mir geology to prospecting or mining for tho precious metals in off 09 instances out of those game caine sc offers will be found delving on sonic some alvatus catus felis that in every cuse case would be passed 1 by men having even the ruai rudiments ments of geolot geological information tho the old mining adage that one cant see beyond his bis pick is true iu in its entirety only of the man with a strong hack back and weak load hoad by the exercise of their reasoning faculties men know that certain things exist that cannot be the result obtained by reasoning rea boning from cause to effect are in jiuing generally nearer 0 the truth than the uninitiated tire aie willing to admit daany many of tile the theories even if old time miners of the origin of ous veins wid and their filling would be laughable wre were not nol the results ilta kio BO of often ten pathetic nearly every novice in prospecting and mining has hasa a theory the ry all his hie own of how bow veins ever formed many believe that the quartz filling wils as pushed up tip in the condition in which the prospector finds il 11 k with rare exceptions cep tiona all prospectors believe that all veins penetrate tile the earth to enormous depths when they find or oi the surface sur fact there sole argument for 4 permanency is ia that the alie metals I 1 fitin down after digging the bot sit torn tom out oal of a gosh gash vein instead of accepting defeat gracefully they i claim chalm that the vein Is merely cuc bucolt oil r 11 and when they utterly fall fail to account lar air tin nn unfavorable change e in tiny any other way they call it a filp 11 and spend their lives on some catus felly fells with the ever present mental swamp light that the future will their judg jud gemont cmunt it aces never to occur to the average prospector that in the cooling of eruptive rocks shrinka shrinkage gb fissures axe are formed just as aa cracks are formed in t L 4 mud flat or checks la in a plank they are not willing to each exchange ange their rain down aown argument fur for the entirely natural truth that those Mirin shrinkage kage cracks were filled with atoms of quartz and the by aby tho horizontal or lateral inflow of heated acidulous waters arom t the he seams or other openings in the adjacent eruptive country rock w prospectors tors who reject the the theory nry t of veins having been filled by s tra tr atlon tion should sit down at the feet T of name dame nature surrender their pride of intellect int elect and tako take at a fifteen jesson from the th lh e greatest t i school acho in the universe the evi evidences denees of are 4 t plainly visible and easily read they re not however lio wever infallible lie because cause g gash ash or crack veins are pearly as likely to occur contiguous con to evi evidences deuces ot permanency us its distant bom them but thio vt changes arc materially lessoned Panl tin of the country rock caused by profound fro found fissuring is evi deuce that adjacent veins also go dogul to the t he depths but a aake of eruptive material brinl that outs 1 tile countey rock over a long distance is probably the best beat evidence of permanency and richness that can be found the presence pres euco of a porphyry dyke conclusively proves that the country rook ronk was fissured down to the region of molten material dyches also prolific sources of bf values vallies nud aud of addi additional donal bent extended over it ire greater ater lipse of time which was au an important factor in the direct enrichment or so calledo secondary enrichment of the voin fj the foregoing has been written ina in a friendly rather than in a captious spirit and for the bhe benefit of young prospectors prop pee tors to whon whom a ft faw sv words of explanation on tin an easy yet somewhat intricate subject may prove to be useful as 03 a hint to avold avoid the mia takes of those who are sacrificing their lives in digging holes in absolutely hopeless localities |