Dimension stone as a specific nonmetallic raw material, regarding deposit conditions, exploitation methods and processing, demands an adequate estimate of dimensioning i.e. optimalization of the exploitation in relation to the structural elements. The analyzed and presented examples show that in natural conditions ada tation of the exploitation technology to the discontinuity fatric could resul...

stylolite networks and their insoluble residues (ir) are among the major concerns and the fundamental controls on the mining and processing of sedimentary decorative stones, largely made from dolomitized limestones. they are mainly used, as natural rock blocks and polished slabs, to construct and decorate floors and walls of buildings and monuments. representative quarries in khur areas, east o...

Different structural parts of monuments and historic buildings were based on stone as the main building material, such as masonry and foundation, while many types of stones were also used for decorative, architectural elements, such as reliefs, cornices, corbels, colonnettes. The preservation of stone elements is crucial for the continuity of these structures. Mortar on the other hand is an art...

This work focuses on the study of the ‘‘calcare a lumachella’’ stone (Mt. Carrubba Fm.), a carbonate rock widely used as building and decorative material in the Baroque architecture of the Val di Noto (southeastern Sicily). Among all types of limestone outcropping in the area, this lithotype shows higher resistance to weathering. In such a context, the main goal of this study is to correlate th...

mosques always during the islamic period have been as a particular species manifestation of taste and skill of real artists, and like a large canvas have displayed the set of popular arts in any period. in the meantime, stone , despite the difficulty in extracting and cutting, not abandoned ,and at  beginning of the qajar dynasty, trimmer of  this period  following the order and recommend of ma...

Reports of radiation from granite counter tops generated public interest in the potential exposures to external gamma radiation and internal exposure from radon decay products created by building materials. The gamma radiation, radionuclide content and surface dose rates were measured in 322 slabs of 254 named stone types (area ~50 ft per slab) and 14 smaller samples (area ~1 ft). Average surfa...

Labradorescence is a complex optical phenomenon that can be found in certain minerals, such as Labradorite or Spectrolite. Because of their unique colour properties, these minerals are often used as gemstones and decorative objects. Since the phenomenon is strongly orientation dependent, such minerals need a special cut to make the most of their unique type of colourful sheen, which makes it de...

This report describes a new pyroxmangite-rhodonite occurrence visited briefly by the authors as part of a broader study o,f gemstones in British Columbia. The discovery is on the Cl-t claims, 1.5 kilometres northwest of Mount Roderick Dhu (lat. 49”12’, long. 118’37’), 13 kilometres northeasi of Greenwood (Figure 1). Rhodonite is a manganiferous semiprecious stone valued for its pink to deep red...

Japanese ceramic and lacquer objects have been collected and used as interior decorations in Europe since the early seventeenth century, and in the nineteenth century the fashion for Japonisme saw a boom of importing various Japanese decorative arts. Museums and private collections all over the world have rich holdings of Japanese decorative arts, however, the systematic research of Japanese de...