Natural Resources Research

, Volume 28, Issue 4, pp 1371–1383 | Cite as

Tigris River Sediments as Abrasive for Polishing Marble

  • Salih Muhammad AwadhEmail author
  • Sara Ali Khalid
Original Paper


This study aims to evaluate the use of Tigris River sediments as abrasives for polishing marble surfaces to achieve a usable form as floor tiles, facing stones and ornamental stones. Laboratory experiments using a wet polishing method with grain sizes of 250, 125, 71, 45, 25 and 18 μ were used for polishing the marble surface. Buffing was then completed using diamond pastes of 7 and 2.5 μ grain size to obtain a glossy surface. The reflectance values (R%) of the marble surfaces were negatively related to abrasive grain size, while the surface-roughness values (Ra) were positively related to grain size. The marble’s surface reflectivity increased (0, 0, 0.6, 1.7, 4.2, 12.2, 40.3 and 84.3%) as its roughness decreased (91, 70.5, 24.4, 16.4, 14.4, 11.7, 9.9 and 7.7 μ) with the use of grain sizes of 250, 125, 71, 45, 25, 18, 7 and 2.5 μ, respectively. The grain size and grain shape (roundness and sphericity) profoundly affected the polishing process. This study proved the efficacy of Tigris River sediments in eliminating the roughness of the marble surface and readying it for easy buffing by diamond paste, with reflectance reaching 84.3% within the standard values (30% to 85%). This article contributes to the field of industrial rocks and minerals, as there is a lack of studies on the use of river sediments as abrasive for polishing marble surfaces.


Stream sediments Abrasives Polishing Marble Reflectance Roughness 



The authors are grateful to the workshop staff of the Geological Department, College of Science, the University of Baghdad, for helping in the preparation of the thin sections, polished sections and complete polishing operations. We also thank the staff of the German-Iraqi Laboratory for their assistance in XRF and XRD techniques. The authors thank the reviewers for valuable comments and are very grateful for the editor John Carranza who developed this research scientifically and linguistically.


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Copyright information

© International Association for Mathematical Geosciences 2019

Authors and Affiliations

  1. 1.Department of Geology, College of ScienceUniversity of BaghdadBaghdadIraq

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