 | | Report (issue) | | Director Bulletin 954-F MANGANESE DEPOSITS OF MEXICO BY PARKER D. TRASK AND JOSE RODRIGUEZ CABO, JR...in cooperation with the UNIVERSIDAD NACIONAL DE MEXICO, INSTITUTO DE GEOLOGIA SECRETARIA DE LA ECONOMIA...PARA LA INVESTIGATION DE LOS RECURSOS MINERALES DE MEXICO under the auspices of INTERDEPARTMENTAL COMMITTEE..._____ Guadalupe deposits (7a) _----___-_-_____-____________ Santa Isabel (San Nicolds) deposit (9)__...(9)________----_---______ San Juanico deposit (9a)____._--- _-__----_-__-_______ Chihuahua ---------..----------------------------- |  | | Book | | accumulation in a par ticular locality, called a mineral deposit, is large enough. The percent age of the useful...which they occur in nature, etc. Many a valuable deposit has been missed because of the failure on the part...reworking silty lacustrine sediments gradually deposit colloidal iron hydroxides (limor nite). Colloids...in various beautiful colours, such as violet (amethyst), pink, yellow-brown (due to the pres ence of...to compile geological maps; (2) in developing a deposit when the elemental composition of ores must be |
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