| Show TIN DEPOSITS IN ALASKA placer tin was discovered in 1900 in the york region ta of seward peninsula which is the land mass that projects from the west coast of alaska to within sixty miles of asia mr alfred H brooks of the survey found in the placers of Ani kovik river and buhner creek one of its tributaries tributa ries some concentrates which proved to contain stream tin since that time an effort has been made to determine the extent and distribution trib ution of the stream tin and locate its source in bed rock though the occurrence of tin bearing 1 lodes had been previously reported the first authentic discovery of this kind was made by mr collier during the summer of 1903 accompanied by mr F L hess as field assistant he visited teller late in july and there met a number of prospectors who had been searching for tin in the york region and who were anxious to have their specimens examined since they were unable to identify tin ore among these specimens only one piece of tin ore was found but it had been obtained in a new locality and consisted of crystals still in the matrix during the following week collier and hess visited lost river buck creek and cape Aroun mountain tain and located the tin deposits at those places the results of their investigations are embodied in this bulletin together with information derived from a study of specimens of tin ores and associated minerals minerals recently brought from the york region by outside parties the geologic results of investigations made by members of the survey will be published in detail at a later date but brief descriptions of the general and economic geology of the region are included in this bulletin some valuable data concerning the means of transportation in this district and the fuel supply are given the physical characteristics of tin ore and its associated minerals mineral s bourm tourmaline aline garnet magnetite fluorite and quartz are described and methods of assaying tin ore are discussed among them a method elaborated by mr eugene C sullivan chemist of the survey by means of which minute traces of tin can be detected A brief description of the better known tin deposits of the world is included in the bulletin in the hope that it may be of value to the prospector the essential purpose of the bulletin is indeed to present such facts in regard to the occurrences and value of the metal as may be of assistance to those who are interested in the development of the field the bulletin is printed for gra arg tritous distribution and may be obtained on application to the director of the united states geological survey washington D C julius caesars caesara Cae sars invasion of britain marked many important beginnings in the history of the civilized world it is said that one result of that epoch making event was the revelation to the roman world of tin mines in the hills of cornwall cornall the pop flarity of that useful white metal began with its earliest importation to rome and has continued down to the present day but the sources of the worlds supply of tin have unfortunately not grown proportionately with our knowledge of the world the mines of cornwall are still productive and like those of bolivia and saxony furnish tin from vein deposits in the bed rock but the greater part of the worlds supply of tin is now 0 obtained from alluvial deposits over three quarters of it comes from alluvial deposits in the malay peninsula otherwise known as the straits settlements and the islands of banca and billidon Bil liton off the north coast of sumatra alluvial deposits in australia also contribute to the total output the worlds production of tin in 1903 amounted amount dd to 06 long tons of which the straits furnished tons banca tons bil liton tons bolivia tons cornwall tons and other countries tons only 30 tons of this total amount were mined in the united states and not more than tons of metallic tin have ever been produced from ore mined in this country although small amounts of tin have been found in no less than seventeen states and territories these facts lend unusual interest to the discovery of tin in our alaskan A report entitled the tin deposits of the york region alaska by mr arthur J collier has been recently published as bulletin no by the united states geological survey in response to the demand for reliable information regarding the occurrences of tin noted in alaska |
