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Table 2. Mineral content in weight percent. <br />in <br />O <br /> RK-1' RK-2' RK-3 RK-4r TL-1 TL-2' TL-3 TL-4 TL-5 TLfi' <br />Pyrite 0.74 2.43 5.16 1.58 2.60 1.08 3.68 8.17 1.93 <br />Marcasite 0.02 - 0.16 - 0.08 0.95 - <br />Pyrtholite 0.03 0.64 - - - 4.30 10.92 <br />Calcite ?" O.l 0.5 - 1.5 0.7 0.2 0.6 - 4.6 <br />Dolomite ? - 3.0 0.4 0.8 1.10 - <br />Ankerite - - - - 1.9 - - - <br />Siderite 0.3 3.2 - 0.2 8.3 - - <br />Quartz 24 - 41 34 38 53 42 45 21 12 <br />Feldspar 24 54 29 29 39 30 12 13 52 5 <br />Mica 6 4 12 4 t4 10 10 30 10 2 <br />Chlorite 14 2 2 2 1 14 - <br />Kaolinite 2 - 8? 2 6 6? - <br />' RK-1 also contains 29% clay (probably montmorillonite) and < 1 % iron oxides/ilmenite. <br />~ RK-2 also contained 4% amphibole, 18%pyroxene, 1190 olivine, < I % serpentine, and 4% iron oxides/ilmenite. <br />_ ' RK-4 also contained 19% clay (probably montmorillonite). <br />' Trece amounts of copper carbonates were noted in TL-2. <br />' TLS contained 3 % amphibole and 55 %pyroxene. <br />" '?' indicates the mineral was probably present but not positively indentified by XRD. <br />• <br /> <br />