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Table 2 Portable x-ray fluorescence spectrometry net intensity results for rock varnish and fresh fractured Seneca sandstone surfaces shown in Fig. 6

From: Rock varnish on architectural stone: microscopy and analysis of nanoscale manganese oxide deposits on the Smithsonian Castle, Washington, DC

Element/net intensities X-ray line Black1 Black2 Black Bavg Red1 Red2 Red Ravg Bavg/Ravg
K Kα 3604 3089 3347 2960 3542 3251 1.03
Ca Kα 3765 3210 3488 1883 1955 1919 1.8
Ti Kα 10,788 9928 10,358 10,474 10,302 10,388 1.00
Mn Kα 357,188 328,229 342,709 4992 10,533 7763 44.15
Fe Kα 360,371 333,692 347,032 319,972 328,254 324,113 1.07
Ni Kα 382 376 379 256 301 279 1.4
Cu Kα 3363 3212 3288 2119 2261 2190 1.5
Zn Kα 2676 2596 2636 1428 1614 1521 1.7
Ga Kα 324 162 563 555 559 0.3
Rb Kα 6221 5948 6085 6606 7420 7013 0.9
Sr Kα 12,303 11,791 12,047 12,317 13,234 12,776 0.9
Y Kα 4643 4264 4454 4442 4430 4436 1.00
Zr Kα 44,471 39,197 41,834 41,126 39,503 40,315 1.04
Pb Lα 7753 8219 7986 1403 1565 1484 5.4
Fe/Mn   1.009 1.017 1.013 64.10 31.16 41.8  
  1. Elements significantly enriched in the varnish (Bavg/Ravg) in italics