Exploration for porphyry-style copper mineralisation near Llandeloy

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j Table 9 Summary of analyses of intrusive rocks from boreholes Si02 A?203 TlO2 P$l3 XgO CaO Na2O *20 P205 S Cu Pb Zn As Ma Ni Ba Rb St' Zr Th Hb Y Ce W Sample Major elements quoted in % oxide, S in 0, trace elements in ppm. Table 10 Mean analyses of main intrusive rock types in boreholes 1 - All Intrusive Rocks Mean Median Std. Max. Min. Dev . 55.79 55.22 5.40 65.04 42.79 16.38 16.40 0.80 17.99 14.69 0.53 0.54 0.13 0.83 0.35 8.10 8.42 2.30 17.75 4.85 0.15 0.14 0.05 0.31 0.07 3.95 3.98 1.17 6.24 2.00 4.49 4.20 2.49 12.00 0.51 3.82 4.01 1.22 6.43 0.39 1.76 1.39 1-15 5.96 0.41 0.14 0.13 0.03 0.21 0.10 0.57 0.32 0.72 3.23 0.10 293 194 445 3515 18 24 (13 56.6 375 (13 80 78 30.3 196 32 6 (216.3 92
Figure 32 Plots of SiO2 v MgO, CaO, iron as Fe203, K20, Na20 and Zr <strong>for</strong> all igneous rock samples Figure 33 Plot of Mg/Zr v SiO2 <strong>for</strong> igneous rock samples 3 1 Surtroe BomhOk 0 PorphyriticmicrWonrlitr e a Tocullte Qlm micmdiorite(lm 2) + Quartz micmdiorite (BH 7) X 0 OunRdiorite 4 v Porph~ritic microdionte v A Microdiorite A (O Pocphyritic qwm morodmite
Page 1: Natural Environment Research Counci
Page 5: Report No. 78 @ Crown copyright 198
Page 9 and 10: SUMMARY REGIONAL STUDIES Intrusive
Page 11 and 12: SUMMARY Geological, geochemical and
Page 13 and 14: concluded that except for Zn the re
Page 15 and 16: The only rock containing evidence o
Page 17 and 18: Table 3 Analyses of miscellaneous r
Page 19: - 28 St. Brides Bay -
Page 22 and 23: Hercynian orogenies (M. 3. Arthur,
Page 24 and 25: Figure 14 Location of soil anomalie
Page 26 and 27: producing a very limited dispersion
Page 28 and 29: -1 00- Contours of VLF horizontal i
Page 30 and 31: area and periglacial and glacial de
Page 32 and 33: the Brunel Beds or the Tetragraptus
Page 34 and 35: contains sparse subhedral plagiocla
Page 36 and 37: There is some variation in the alte
Page 38 and 39: The cause of other isolated weak Cu
Page 42 and 43: increase the Zr content. The divisi
Page 44 and 45: variation between pu8M microdioritn
Page 46 and 47: T/I~~/~~IPYS openjoi~~tcd limestone
Page 48 and 49: Table 13 Summary statistics for sed
Page 50 and 51: than average values quoted for sand
Page 52 and 53: Introduction The main geophysical m
Page 54 and 55: Figure 42 Contour map of apparent r
Page 56 and 57: Figure 45 Contour map of tow magnet
Page 58 and 59: Pigum? 47 Cumulative f reguency plo
Page 60 and 61: it to this late propylitic alterati
Page 62 and 63: HOLWSTER, V.F. 1974. An appraisal o
Page 64 and 65: APPENDIX 1 ABBREWATEI) BOREHOLB LOG
Page 66 and 67: BOREHOLE 2 Registration Number STvI
Page 68 and 69: BOREHOLE 3B Registration Number SM
Page 70 and 71: BOREHOLE 5 Registration Number SM 8
Page 76 and 77: SANDSTONE: as above CLAY GOUGE: SAN
Page 78 and 79: --- APPARENT ESISTIVITY pa IN OHM M
Page 80 and 81: APPARENT ESISTMTY H Bbs ys 06 q6 CH
Page 82 and 83: z ~ l ~ ~ ~ l ~ l . ~ l ~ , ~ l l A
Page 84 and 85: z ~ 1 ~ 1 ~ 1 ~ 1 ~ 1 APPARENT FEJS
Page 86 and 87: z ~ l $ l l l l l ~ l l ~ l l l l ~
Page 88 and 89: MAGNETIC FELD IN NAFTESLA Y /-*-.-.
Page 90 and 91:
!IN@ a 8 g e s s I! s F N : , S ? I
Page 92 and 93:
~ N & E e 8 g B 8 8 7 a F N . S ~ 9
Page 94 and 95:
PHYSICAL PROPERTY MEASUREMENTS ON B
Page 96 and 97:
Borehole 8 (diameters of core 9-72
Page 98 and 99:
APPENDIX 5 COMPUTER MODELLING OF AE
Page 101 and 102:
RMS RESID - 6.53 FLU. PT ELEV ORS n
Page 103 and 104:
MRGNET I C: TIJTERF'HFTAT 1014 . .
Page 105 and 106:
ANU.YSB OF BOLPROLB CORE& TRACE ELE
Page 107 and 108:
. Sample BH , Depthv ,(m); -, - . ~
Page 109:
. , I , . . . . .. . , . , '," . ',
Page 112 and 113:
Fig.7 Aeromagnetic anomaly map of t
Page 115 and 116:
\ Fig.13. Compilation map of resist
Page 117 and 118:
Q Q E C E CCt C E Ct C Q Ct CtQ C Q
Page 119 and 120:
!2 CO N A 4 ul o ~n o ul 0 DEPTH IN
Page 121 and 122:
Fig.25 BOREHOLE 5 C C C C Ct C E K
Page 123 and 124:
Fig.27 BOREHOLE 7 E Q C Q E C 0 Q E
Page 125:
81 82 83 84 Fig.30. : Location of c
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Exploration for porphyry-style copper mineralisation near Llandeloy

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