Aesthetic Quality Properties of Carbonate Breccias Associated with Textural and Compositional Factors: Marrón Emperador Ornamental Stone (Upper Cretaceous, Southeast Spain)

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Title: Aesthetic Quality Properties of Carbonate Breccias Associated with Textural and Compositional Factors: Marrón Emperador Ornamental Stone (Upper Cretaceous, Southeast Spain)
Authors: Muñoz Cervera, María Concepción | Rodríguez García, Miguel Ángel | Cañaveras, Juan C.
Research Group/s: Petrología Aplicada
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente
Keywords: Ornamental stone | Dolostone | Breccia | Colour | Upper Cretaceous
Knowledge Area: Petrología y Geoquímica
Issue Date: 1-Mar-2022
Publisher: MDPI
Citation: Muñoz-Cervera MC, Rodriguez-Garcia MÁ, Cañaveras JC. Aesthetic Quality Properties of Carbonate Breccias Associated with Textural and Compositional Factors: Marrón Emperador Ornamental Stone (Upper Cretaceous, Southeast Spain). Applied Sciences. 2022; 12(5):2566. https://doi.org/10.3390/app12052566
Abstract: The aesthetic properties of ornamental stones, including colour, texture, and the presence or absence of discontinuities, are influential in their use and marketing. This is particularly critical in brecciated rocks such as the Marrón Emperador (ME) ornamental stone, a dark brown breccia dolostone (Upper Cretaceous, southeast Spain). ME shows a high chromatic and textural variability, which is one of its most appreciated commercial features. Through a petrographic, mineralogical, geochemical and colourimetric study of samples obtained from quarries, outcrops and/or drilling cores, several quality categories have been established, as well as the relationship between the aesthetic properties of ME ornamental stone with its compositional and textural factors. Three main types of breccia constitute the ME exploitable lithotect: crackle and mosaic packbreccias, and rubble floatbreccias. Breccia clasts are mainly composed of hypidiotopic-idiotopic medium- to coarsely-crystalline dolosparites, microcrystalline dolosparites and dolomicrites. Results show that diagenetic processes are mainly responsible for the colour of ME dolostones, revealing that the Sr content is a key factor. The darker brown dolomites always show a higher Sr content, where other typical chromophore elements in dolomites, such as Fe and Mn, do not present this correlation. This study provides evidence for the complexity of processes and factors that are responsible for aesthetic quality features in ornamental stones.
URI: http://hdl.handle.net/10045/121982
ISSN: 2076-3417
DOI: 10.3390/app12052566
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Peer Review: si
Publisher version: https://doi.org/10.3390/app12052566
Appears in Collections:INV - PETRA - Artículos de Revistas

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