Laserfiche WebLink
D14 GEOLOGY, SLICK ROCK DISTRICT, SAN MIGUEL AND DOLORES COUNTIES, COLO. <br /> TAMA 9.-Average volume percent of heavy minerds in the heavy fraction cad average weight percent of heavy fraction from samples <br /> of sandstone of the carbon fades from soma Meaosoie wets <br /> [Numbs of„mpke.boffin in pmnibaeer.m,mlem.bdketp W thin 0.5 po t.kol m(-)hrdltata oar detected) <br /> Chinle Formation Morrison Formation Average Average <br /> volume weight <br /> Petrified Forest(?) Salt Wash Member Brushy Basin Member percent percent <br /> Member of heavy- of total <br /> "fiddle Upper Lower brown fractions rock <br /> unit unitl unitl <br /> (2) . (7) (32) (32) (73) <br /> Average volume percent of heavy minerals in heavy fraction <br /> Black opaque <br /> minerals---- 40 32 42 29 35 0.10 <br /> Zircon-------- 12 17.5 20 16.5 18 .050 <br /> Tourmaline---- 2.5 2.5 6 5 5 .014 <br /> Apatite------- 5 1 1.5 1.5 1.5 .004 <br /> .; Rutile-------- 4 1.5 1 .5 1 .003 <br /> Garnet-------- 8 .5 m .5 ---- ---- <br /> Leucoxene----- 12 8 9 8 8.5 .024 <br /> .;'..;Barite-------- 3 34 18 34 26 .073 <br /> Anatase------- 4 1 1.5 3.5 2.5 .001 <br /> Spinel-------- ---- ---- TO In ---- ---- <br /> Pyrite-------- 6.5 .5 1 1 1 .003 <br /> Other minerals 3 1.5 m .5 1.5 .004 <br /> Average weight percent of heavy fraction <br /> Total sample-- 0.06 0.15 0.16 0.45 0.28 ---- <br /> .lFrom Bowers and Shame (1961, tables 5 and 6). <br /> TABLE 10.-Average chemical compoeitio4 in weight percent, of <br /> sandstones of the carbon fades in the Slick Rock district <br /> 111 Md on smdgoeaWean epearogMhk saeyees by Joseph Aaay.N,m*r,0, <br /> kokd for but ad kud(be Soh of daiedabaltr).Also bokd fw but set tans: <br /> P.An.BI,Cd.Cw Dr,Er,Ea,Gd.Go,III,Ng,No,In,Ir,Il,la,Nd.On,Pd.Pr.Pt, <br /> Rb,go.Rh,Ra.Sb.Sw,Tm,Th,To,Th.Ti Tm,U.W.ra.Nambor of nmpla In <br /> parentheseel <br /> Xor[l.an ror..cia� Xorri.on rarvrion <br /> S.It Sru.hr Av.np 5.1t lrv.hf Avery. <br /> Vuh U.ln Yuh A..In <br /> N..b.r M.eb.r N.ebar Xeeb.r <br /> (1) (3) (4) (1) (3) (4) <br /> el--• X N N Cr--- 0.001 0.002 0.002 <br /> Al-•- 1 ] 2 a•-- .003 .Do2 .a02 <br /> I.--- I 2 2 G. 0 .001 r.001 <br /> Mp--- ,1 .2 .is V-•- 0 0 0 <br /> G.--- .3 5 4 No•-- 0 0 0 <br /> N.--- .1 1 1 eb--- 0 0 0 Heavy Mineral and <br /> r-•-- o .2 .b NI--- .001 .001 .00i <br /> n--- . .14 .0 Pb- .oD3 <.001 .001 Compositions of <br /> Nb--- .01 01 .12 .11 So--- 0 .001 .001 Chemical Comp <br /> As--- 0 <.00001 <.D0001 5.--- .01 0 ..01 Carbon Facies sandstones <br /> M--• 0 0 0 Sr- - .001 .001 .001 in Slick Rock District <br /> e.--- .03 .12 .10 Y---- o .001 .001 <br /> e.-•- o 0 o ro.__ o .0001 .0001 (from Shawe, 1976) . <br /> ca--- D .0.001 .001 zr--- .01 .01 .01, <br />