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~l,l C7 "'j( 1I~55Rf1 UM~a DURRfYGO FIELD OBE P.2i19 <br />1 ~~. ~1 <br />J~ <br />MONADNOCK <br />t~AINERI~L SERVICES <br />i <br />RoOen •. f Gamela J. Larwn <br />October 24, 1997 <br />Received ., <br />Bob Oswald <br />Division of Minerals & Geology <br />484 Turner Drive, B1dg.F-101 <br />Durango, CO 81301 <br />RE: MEMPHIS, FILE NO.M-97-084, <br />Dear Mr. Oswald: <br />OCT 2 8 1397 <br />v0 QO~I;p <br />Gv~r'• CO 6i e]/ <br />.9pJ~ 355._E,y <br />80FF~C~O <br />~i°a~~ aOsti~ <br />Response to Adequhcy Review Letter <br />The following"information is to respond to the cort¢nents in your <br />"Adequacy Review Letter" dated October 17, 1997: <br />Application-Item 5, page 1 <br />Waste Rock and alluvium are the commodities listed in the <br />application and referred to in the report of your inspection dated <br />10/15/97. <br />A composite of five random samples was classified and quantified <br />to detezmine overall composition of this material. Based upon this <br />study the following was determined: <br />Size of material - 50% > 1°, with mostly 3"-5" pieces <br />SO% c 1", clayey quartz sand and arkose <br />Composition: >1" - 25% sedimentary with mostly red arkosic <br />• sandstone ar_d some green mudstone, no <br />mineralization with a small amount of <br />limonite on some surfaces <br />~. 60~ volcanic with green-grey andesite and <br />quartz monzonite, cl% pyrite observed, <br />mostly fresh an3 unaltered surfaces <br />15s altered sedimentary and igneous rocks <br />with silicified vein material containing <br />2%-3$ pyrite and <1% grey to black sulfide <br />minerals, possibly galena and/or sphalerite <br />Composition: cl" - 70$ unaltered arkosic snadstone with some <br />buff quartz and grey-green igneous rocks <br />30% altered, tan to ochre, vein material <br />with quartz and igneous country rock <br />