Show IN MUDDY MOUNTAINS NEV deposits of hydrous calcium borate a source of borax and boric acid have been discovered in two areas in the muddy mountains dark clark county nev one in white basin the other near callville Call ville wash these deposits are remarkable not only because they are the first valuable deposits of this mineral found outside of california hut but because the geologic creolo structure of the rocks in which they occur is so simple as to permit a study of the origin of the mineral was first discovered in this region in the white basin east of muddy peak and the first locations were made by john perkins of st thomas nev in the fall of 1920 stimulated by this discovery two other prospectors pec tors F M lovell and george hartman after a few weeks of clever scientific prospecting found a much larger deposit near callville Call ville wash nev they abonce sold their claims to F M SM smith 1 ath the pioneer borax operator for this deposit lies on the north limb of a downward fold which forms a depression more than a mile long and nearly a mile wide the bed or vein of crops out along the steep outer slope of the hog back ridge formed by the eroded edges of the depressed strata it is exposed so clearly that from certain points the out outcrop crol is plainly visible for at beasi leas feet the bed is a great lens having a thickness in this distance ranging from 10 to 18 feet and it is especially noteworthy for its continuity and regularity it is not so thick as some of the enormous deposits at furnace creek calif but the deposits there and in all the other producing districts of california are bunchy and broken the deposits in nevada which consist in large part of massive crystalline lie near the middle of a set sef of beds of the horse spring formation at least feet thick composed chiefly of thin bedded limestone the is with considerable material so that any ordinary method of mining would yield thick masses of the mineral mixed with shale and it will probably be desirable to concentrate the material by roasting I 1 the deposit near callville Call ville is apparently similar in ori origin to the deposits in the white basin although itis it is vastly larger it appears to be essentially a huge spring deposit formed in or about a playa by the evaporation of waters vates containing much boron and lime all the in the muddy mountains may have been deposited originally as a mineral contain containing inO sodium calcium and boron but as the waters of the district contain an abundance of lime as is shown by the enormous masses of vertine travertine tro limestone there most of the was probably laid down directly from spring aprin sprin waters that contained boron though also was probably laid down for some remains in the deposit |