Show IRON ORE DEPOSITS they are immense just north of washington county report of geological survey salt bac tribune tho rapidly increasing consumption of iron ore in alic united states during alic laba few 5 irs lias ltd to careful of all available aai lable supplies loth in producing districts ami in relatively unknown fields with the result of the limitation of alic deposits now work cd and of pointing out the need for alie early exploitation of new at present alian two per cent of the iron ore mined annually comes from the region west of alic mississippi where large deposits 1 not been w because of lick of transportation por tation facilities or distance froni centers of colsum eption these deposits are now becoming of steadily increasing importance one such deposit in iron count utah in whit is known as the iron springs district is described in a bulletin no 3 58 by ecith and E harder juat published b alic united states geological suney the region lias been explored by about 1600 pits but as alic deepest pit was earned dow n only fet fe t the extent of alie ores 14 not know n total aita is square feet and total tonnage so far as can bo measured by alie areas and pits explored is tons Pro kibly tins limata is much too small as the orta doubtless continue for some distance dib tance below alic depths indicated by alic pits tho nearest railroad is twenty two miles distant alic iron springs district was u for examination the deposits are large and well located for study and alio ores arc typical of many others in the west and a of bubli quality that their commercial seems likely within a short time i alio ores occur in with a area tint is 1 by 20 miles in extent hobt of at or near alic contact of the country rock with certain igneous rocks known as u were long ago forced up from alic births interior against or p irti into a great bed of limestone alic force was not great enough to break through alic limestone md the molten rock sarc id out ing its way between the limestone and alic mg bed and forming w hat are knott n to giolo gits a or sills alie dorco and hi at of alic intrusion int rubion and the later shrinkage on cooling fractured and fissured both the and alio hot solutions roso through alie figures alling them with iron ores and other winch ocic deposited as fissure uns in alic andisi tc and as ladus and veins in alio n cri mg limestone ill cleion wore away tho cover and the and the ores in of the alio oris in the ma extend downward to considerable depths alie exact bv the of tho figured alic wire deposited alic of thy deposits in i alic limestone depends on the depths to winch the contacts extend alio oab one of the whose can be with information probably dots not fir taiti ali in 2500 fi ct lathun of ore in this and min other western iron districts outlines alie first ride for alic prospector aho vho is searching for lucli ores to find tho lacco litha and determine their boundaries chis is easily done for alie arc birder than alic other rocks and baand out above them conspicuously alio contact auth tho sedimentary rocia hamd be explored in places the ores stand out in great black but they are concealed beneath the that lias slid don the mountain aidis bulletin can be had on application to tho director united states geological sun cy washington D |