Spectroscopy and Spectral Analysis, Volume. 42, Issue 8, 2506(2022)
Analysis of Sandstone in Leshan Giant Buhhda Based on Hand-Held X-Ray Fluorescence Spectrometer
Figures & Tables(3)
Fig. 1. Chemical composition curves of sandstone in Leshan Giant Buddha
Table 1. Microscopic characteristics of rock samples from Leshan Giant Buddha
View tableView in ArticleTable 1. Microscopic characteristics of rock samples from Leshan Giant Buddha
位置 宏观照片 偏光镜照片 鉴定特征 佛首 
石英含量85%,磨圆分选高,直径0.2 mm;岩屑含量10%,表面多高岭土化或绢云母化,或为石英小颗粒集合体,直径约0.2 mm;次生矿物褐铁矿含量约5%,或呈小颗粒,多以薄壳形式包被于其他矿物颗粒边缘;偶见斜长石和黑云母 胸部—上腹 
石英含量85%,磨圆分选差,粒径主要为0.1~0.6 mm;岩屑含量10%,磨圆较好,表面多高岭土化,粒径约0.1~0.3 mm;斜长石含量2%,呈半自形短柱状,直径约0.1 mm;次生矿物褐铁矿含量3%,少数呈粒状,多数以薄壳形式包被于其他矿物颗粒边缘;矿物颗粒间几乎无胶结物,孔隙度高 膝盖 
层理发育,深红层为褐铁矿-岩屑层,浅红层为方解石-石英层;石英含量30%~50%;方解石含量增加,约15%,粒径多10~20 μm,层间缝隙由方解石和石英颗粒充填;发育少量云母,基本不含褐铁矿;岩屑几乎完全绢云母化 小腿 
石英含量80%,他形粒状,磨圆度较低,呈次棱角状;分选较好,直径约0.3~0.4 mm;岩屑含量10%,磨圆度较好,为次圆状,表面多高岭土化或绢云母化,或为石英小颗粒集合体,岩屑直径约0.3 mm;黑云母和白云母含量共约3%,呈片状或长条状,长度约0.25 mm;斜长石含量约2%;褐铁矿含量约5% 脚部 
石英含量90%,次棱角状至次圆状,粒径大多为0.45 mm;岩屑含量5%,表面绢云母化,粒径为0.4~0.5 mm;石英和岩屑边缘被褐铁矿薄壳包被
Table 2. XRF chemical composition analysis of Leshan Giant Buddha sandstone (Wt%)
View tableView in ArticleTable 2. XRF chemical composition analysis of Leshan Giant Buddha sandstone (Wt%)
深度/m SiO2 CaO Al2O3 Fe2O3 MgO K2O S MnO P2O5 TiO2 Cl 42.0 60.358 16.254 8.880 5.278 4.607 1.935 0.460 0.086 0.336 0.840 0.045 41.5 60.657 16.275 9.470 4.611 2.892 1.877 0.771 0.087 0.239 0.873 0.707 41.0 61.857 16.415 10.112 5.072 1.696 2.131 0.361 0.116 0.462 0.949 0.108 40.5 71.357 11.242 8.701 2.485 2.222 1.782 0.437 0.081 0.206 0.342 0.269 40.0 57.175 18.770 7.350 3.831 2.056 1.812 2.720 0.060 0.267 0.405 0.114 39.5 69.576 10.533 7.061 4.630 2.391 2.392 0.534 0.101 0.797 0.386 0.530 39.0 58.355 22.345 6.535 4.108 2.040 1.928 0.889 0.065 0.193 0.581 1.182 38.5 64.750 16.511 9.613 3.400 1.951 1.825 0.243 0.057 0.290 0.588 0.285 38.0 62.934 15.914 9.593 3.732 3.396 1.869 0.424 0.075 0.255 0.554 0.406 37.5 53.890 21.548 7.521 4.155 2.475 1.548 2.460 0.075 0.327 0.637 0.444 37.0 65.351 16.625 7.452 3.099 1.701 1.590 0.954 0.078 0.162 0.477 0.605 36.5 66.172 16.314 6.666 2.565 1.473 1.449 1.221 0.043 0.113 0.444 1.098 36.0 64.669 15.965 6.280 3.152 2.540 1.505 0.962 0.049 0.216 0.484 2.254 35.5 62.610 10.647 6.178 4.099 0.000 1.410 3.693 0.067 0.212 0.476 3.222 35.0 57.712 10.146 6.179 4.347 1.847 1.564 5.349 0.088 0.199 0.505 1.368 34.5 77.920 4.176 6.883 2.392 2.113 1.558 1.032 0.040 0.110 0.126 1.585 34.2 53.461 19.954 8.169 4.007 2.054 1.690 3.046 0.065 0.380 0.551 0.531 34.0 58.865 19.094 7.131 4.136 1.634 1.557 1.528 0.091 0.207 0.607 2.093 32.5 58.501 17.442 8.515 5.888 3.857 2.080 0.448 0.109 0.628 0.896 0.740 32.0 60.154 20.587 7.763 3.758 3.055 2.074 0.285 0.081 0.530 0.954 0.188 31.5 53.019 24.827 6.661 5.629 3.081 2.195 0.890 0.104 0.537 0.904 0.373 31.0 66.102 15.123 8.611 3.525 2.079 1.989 0.294 0.099 0.555 0.646 0.388 30.5 60.000 16.141 10.757 4.487 2.312 2.316 0.703 0.095 0.470 0.928 0.383 30.0 64.002 11.589 11.796 4.494 3.664 2.149 0.442 0.067 0.236 0.679 0.000 29.5 66.926 14.223 8.572 3.669 2.134 1.813 0.411 0.076 0.265 0.624 0.465 29.2 68.830 13.124 8.448 2.770 1.760 1.674 0.597 0.053 0.171 0.376 1.004 29.0 60.662 15.061 8.062 4.603 3.306 1.915 1.251 0.069 0.298 0.715 1.555 28.5 69.701 14.034 7.315 2.926 1.521 1.557 0.178 0.068 0.252 0.559 1.533 28.0 75.337 9.396 7.049 2.056 1.844 1.912 0.389 0.039 0.125 0.308 0.767 27.5 54.210 19.981 5.552 2.911 4.284 1.242 3.395 0.053 0.204 0.347 1.031 27.0 65.385 14.862 8.905 2.719 2.217 2.063 0.305 0.081 0.157 0.348 2.348 26.5 67.009 9.784 11.601 4.245 1.780 2.393 0.703 0.069 0.131 0.618 0.262 26.0 72.341 9.357 10.169 2.444 1.966 1.926 0.299 0.039 0.270 0.381 0.211 25.5 61.608 14.709 8.754 3.305 3.606 1.738 1.706 0.051 0.186 0.604 0.321 25.0 66.967 11.860 10.020 3.940 1.478 2.060 0.564 0.052 0.174 0.780 0.977 24.5 66.619 13.720 8.304 4.042 2.762 1.962 0.422 0.059 0.251 0.568 0.449 24.0 66.236 13.502 10.638 3.134 2.254 1.954 0.250 0.072 0.385 0.740 0.334 23.5 71.489 9.709 9.886 2.603 2.727 2.125 0.160 0.046 0.271 0.453 0.210 23.0 68.250 10.019 11.140 3.482 2.612 2.168 0.326 0.077 0.310 0.775 0.188 22.5 67.623 12.038 10.237 3.500 2.341 1.981 0.382 0.063 0.322 0.638 0.111 22.0 68.819 8.948 11.671 3.761 2.760 2.117 0.264 0.060 0.249 0.681 0.142 21.8 67.503 7.997 13.195 4.177 2.391 2.416 0.417 0.058 0.223 0.693 0.097 21.5 60.533 15.909 7.492 4.248 2.684 1.810 0.675 0.069 0.251 0.782 4.198 21.0 69.894 9.659 11.531 2.938 1.773 2.141 0.303 0.047 0.393 0.551 0.166 20.5 59.539 15.377 5.252 2.889 2.307 1.573 3.786 0.036 1.282 0.144 0.243 20.3 43.645 41.214 2.638 3.129 4.703 1.651 0.673 0.036 0.470 0.461 0.033 20.0 47.203 38.136 3.881 2.608 3.081 1.614 0.537 0.049 1.111 0.566 0.139 19.5 47.326 36.066 3.961 2.560 5.000 2.116 0.643 0.051 0.592 0.348 0.051 19.0 67.568 13.167 9.096 3.201 3.323 1.907 0.328 0.059 0.143 0.539 0.014 18.5 62.562 13.361 6.842 2.790 1.413 3.369 3.007 0.034 0.284 0.292 0.031 18.0 68.730 14.011 7.795 2.443 2.906 2.077 0.403 0.034 0.207 0.522 0.067 17.5 64.899 12.369 7.836 2.886 2.770 1.655 2.243 0.045 0.212 0.448 0.152 17.0 65.721 11.979 7.373 2.987 2.802 1.439 2.186 0.043 0.248 0.392 0.459 16.5 59.968 13.716 9.020 3.677 2.057 1.744 2.859 0.049 0.245 0.420 0.528 15.5 47.287 21.871 5.014 3.888 1.919 1.677 5.570 0.060 0.355 0.474 0.744 15.0 57.928 17.667 7.860 3.241 2.835 1.536 2.463 0.054 0.295 0.490 0.704 14.5 65.595 14.369 8.227 2.863 1.820 1.634 1.373 0.043 0.269 0.561 0.502 14.0 63.825 16.217 6.382 2.676 1.641 1.633 1.960 0.043 0.218 0.466 1.019 13.5 54.127 21.318 5.144 3.644 0.000 2.008 2.675 0.048 0.261 0.451 4.974 13.0 70.022 13.361 6.785 2.447 1.503 1.726 0.112 0.048 0.268 0.381 3.122 12.5 68.184 14.767 7.045 2.563 0.000 1.840 0.144 0.044 0.219 0.364 4.540 11.5 47.950 25.082 4.113 4.187 0.000 1.357 6.334 0.047 0.482 0.465 2.514 11.0 64.272 14.418 8.300 3.191 2.991 1.958 1.180 0.040 0.158 0.525 0.607 10.5 54.963 17.260 7.703 3.531 2.303 2.278 2.918 0.055 0.418 0.432 2.303 10.0 53.093 18.382 8.354 6.123 1.610 2.195 2.398 0.068 0.277 0.737 1.967 9.5 60.484 12.873 11.402 4.341 3.871 2.294 1.057 0.077 0.380 0.725 0.382 9.0 65.204 15.730 7.918 2.648 2.479 1.557 0.975 0.058 0.298 0.564 0.622 8.5 55.877 17.979 6.066 4.128 0.991 1.517 3.376 0.045 0.316 0.489 2.462 8.0 56.070 14.333 8.881 4.926 0.000 1.994 3.838 0.086 0.338 0.577 1.282 7.5 75.397 7.968 8.617 2.384 1.171 1.908 0.630 0.043 0.272 0.296 0.053 7.0 62.955 13.182 6.728 3.347 0.000 1.673 1.980 0.041 0.154 0.314 5.667 7.2 64.892 12.870 6.709 3.133 1.377 1.729 2.406 0.044 0.312 0.369 1.348 6.5 65.168 11.349 11.142 3.974 4.299 2.028 0.057 0.050 0.275 0.606 0.937 6.0 65.504 13.282 10.755 4.633 2.218 2.075 0.101 0.061 0.346 0.700 0.123 5.5 61.681 17.492 9.213 4.358 2.516 1.852 0.440 0.084 0.282 0.736 0.464 5.0 65.118 11.679 11.049 4.308 3.517 2.222 0.148 0.072 0.211 0.837 0.543 4.5 68.579 11.919 10.481 3.240 2.367 1.841 0.175 0.060 0.211 0.506 0.270 4.0 66.568 13.523 9.655 3.634 2.342 1.792 0.479 0.078 0.171 0.573 0.229 3.5 67.323 12.515 10.620 3.519 2.153 1.762 0.231 0.053 0.205 0.649 0.508 3.0 68.341 10.934 7.949 2.605 2.164 1.562 1.935 0.038 0.191 0.282 0.129 2.5 72.727 8.886 9.919 2.485 1.270 1.964 0.157 0.042 0.139 0.360 1.739 2.0 74.146 6.603 8.146 2.759 1.892 1.819 1.258 0.037 0.067 0.320 0.437 1.5 73.073 11.353 7.164 2.235 1.619 1.284 0.839 0.086 0.318 0.303 0.048 1.0 76.896 9.424 6.370 1.767 2.302 1.329 0.472 0.044 0.224 0.228 0.000 0.5 49.001 20.490 4.660 3.376 1.739 1.567 5.788 0.054 0.464 0.321 0.963 0.2 54.726 19.207 5.438 3.683 1.711 1.326 3.991 0.036 0.305 0.461 1.136 0.0 52.937 19.207 5.238 3.045 0.000 1.774 4.128 0.043 0.380 0.013 4.981
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Hao LU, Wan-lu FU, Jun CHAI, Shuang LIU, Zuo-yu SUN. Analysis of Sandstone in Leshan Giant Buhhda Based on Hand-Held X-Ray Fluorescence Spectrometer[J]. Spectroscopy and Spectral Analysis, 2022, 42(8): 2506
Paper Information
Category: Orginal Article
Received: May. 5, 2021
Accepted: --
Published Online: Mar. 17, 2025
The Author Email: LU Hao (luchengze@pku.edu.cn)
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