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90 results for “Calcite”
Calcite Vase No. 43 Mleiha, Sharjah, UAE
Calcite Vase No. 43 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 388 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 35 Mleiha, Sharjah, UAE
Calcite Vase No. 35 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 372 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Realit y Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado Source: Objaverse 1.0 / Sketchfab
Supplementary Dataset for "Most Earth-surface calcites precipitate out of isotopic equilibrium", by M. Daëron, R.N. Drysdale, M. Peral, D. Huyghe, D. Blamart, T.B. Coplen, F. Lartaud, and G. Zanchetta
<p>This repository contains the raw data files and Python code used to generate all figures and equations included in the article "Most Earth-surface calcites precipitate out of isotopic equilibrium", by Daëron et al. (https://doi.org/10.1038/s41467-019-08336-5).</p>
Walcott-Rust trilobite fossil calcite composition data
<div class="page"> <div class="section"> <div class="layoutArea"> <div class="column"> <p>Trilobites with appendages from the Rust Formation of New York State were discovered in the 1870s and represent one of the earliest known cases of exceptional preservation of non- biomineralized tissues. The Rust Formation trilobites feature three-dimensionally preserved walking legs and delicate respiratory lamellae, but the mechanism behind their fossilization remains unknown. Here we show that after burial, carcass decay produced framboidal pyrite, while fibrous calcite precipitated on the visceral side of the body, followed by the widespread formation of sparry calcite crystal replicating non-biomineralized morphological features. Trilobites and co-occurring calcite veins show no chemical or petrographic differences, rejecting the hypothesis that exceptional preservation was caused by a local microenviron- ment within enrolled trilobites. These results suggest that fine-grained sediment provided support for the appendages and facilitated their fossilization through calcite replacement. Our findings carry broader implications for understanding the exceptional three-dimensional preservation of animal Paleozoic body fossils through calcite casts.</p> </div> </div> </div> </div>
Quartz and calcite slide-hold-slide data from dual-axis nanoindenter
<p>Data from slide-hold-slide experiments performed by a dual-axis nanoindenter (with a diamond Berkovich-type tip) on single crystals of quartz and calcite. The data is in Python's pickle format ("*.pkl") and can be accessed with the pickle library. </p>
Walcott-Rust trilobite fossil calcite composition data
Open the record for dataset details and reuse information.
Biological calcification rate and species-specific contributions of coccolithophores to total calcite inventory in the eastern Indian Ocean
Open the record for dataset details and reuse information.
dataset for experimental study of 'Role of the calcite-water interface in wettability alteration during low salinity waterflooding '
<p>In order to understand the pore- and mineral-surface-scale processes that underpin improved oil recovery during controlled salinity waterflooding, the streaming potential measurements. The two carbonate samples tested, Carbonate-I and Carbonate-II, have the same mineralogy, but the zeta potential of Carbonate-II is anomalously negative in highly saline, natural formation brine compared to the conventionally conventional positive value for Carbonate-I. After aging with same crude oil and using the same coreflooding protocol, improved oil recovery was observed in the oil-brine-Carbonate-II system during low salinity waterflooding, but not in the Carbonate-I system. We suggest that textural differences cause calcite crystal edges in Carbonate-II to be preferentially exposed to the brine in the pore-space, yielding different calcite-brine interfacial behaviour compared to the calcite crystal faces exposed in Carbonate-I.</p>
Hugoniot and released state of calcite above 200 GPa at planetary impact condition
<p>Data include equation of state and adiabatic release state of shocked calcite.</p> <p>All data are gathered in a single Excel spreadsheet with multiple tabs.</p>
Data from: Kinetics of calcite precipitation by ureolytic bacteria under aerobic and anaerobic conditions
The kinetics of urea hydrolysis (ureolysis) and induced calcium carbonate (CaCO3) precipitation for engineering use in the subsurface was investigated under aerobic conditions using Sporosarcina pasteurii (ATCC strain 11859) as well as Bacillus sphaericus strains 21776 and 21787. All bacterial strains showed ureolytic activity inducing CaCO3 precipitation aerobically. Rate constants not normalized to biomass demonstrated slightly higher rate coefficients for both ureolysis (kurea) and CaCO3 precipitation (kprecip) for B. sphaericus 21776 (kurea = 0.10 ± 0.03 h-1, kprecip = 0.60 ± 0.34 h-1) compared to S. pasteurii (kurea = 0.07 ± 0.02 h-1, kprecip = 0.25 ± 0.02 h-1) though these differences were not statistically significantly different. B. sphaericus 21787 showed little ureolytic activity but was still capable of inducing some CaCO3 precipitation. Cell growth appeared to be inhibited during the period of CaCO3 precipitation. TEM images suggest this is due to the encasement of cells and was reflected in lower kurea values observed in the presence of dissolved Ca. However, biomass re-growth could be observed after CaCO3 precipitation ceased, which suggests that ureolysis-induced CaCO3 precipitation is not necessarily lethal for the entire population. The kinetics of ureolysis and CaCO3 precipitation with S. pasteurii were further analyzed under anaerobic conditions. Rate coefficients obtained in anaerobic environments were comparable to those under aerobic conditions, however no cell growth was observed under anaerobic conditions with NO3-, SO42- and Fe3+ as potential terminal electron acceptors. These data suggest that the initial rates of ureolysis and ureolysis-induced CaCO3 precipitation are not significantly affected by the absence of oxygen but that long-term ureolytic activity might require the addition of suitable electron acceptors. Variations in the ureolytic capabilities and associated rates of CaCO3 precipitation between strains must be fully considered in subsurface engineering strategies that utilize microbial amendments.
Calcite Vase No. 10, Mleiha, Sharjah
Calcite Vase No. 10 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 670 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In *EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán.* Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado. Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 8, Mleiha, Sharjah
Calcite Vase No. 8 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 414 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In *EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán.* Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado. Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 21, Mleiha, Sharjah, UAE
Calcite Vase No. 21 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 258 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado. Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 27, Mleiha, Sharjah, UAE
Calcite Vase No. 27 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 238 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado. Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 46 Mleiha, - Optimized
Calcite Vase No. 46 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 259 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado Source: Objaverse 1.0 / Sketchfab
Brittle and Crystal-Plastic Defect Dynamics of Calcite Single Crystals
<p>Dataset for paper containing zip files with images, video files, mechanical and acoustic data for each experiment.</p>
Calcite Vase No. 5, Mleiha, Sharjah
Calcite Vase No. 5, Mleiha, Sharjah Calcite Vase No. 5 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 227 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In *EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán*. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado. Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 18, Mleiha, Sharjah, UAE.
Calcite Vase No. 18 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 245 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado. Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 6, Mleiha, Sharjah
Calcite Vase No. 6 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 233 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In *EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán.* Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado. Source: Objaverse 1.0 / Sketchfab
Calcite Vase No. 46 Mleiha, Sharjah, UAE
Calcite Vase No. 46 of 47, from cache, Mleiha, Sharjah, UAE. The find was made by the Sharjah Archaeology Authority. 2nd-3rd Century CE. 259 photos. Completely processed (aligned, scaled, modeled, cleaned, simplified, unwrapped, textured, meshed) in Reality Capture. J. Mª Córdoba 2016. La era de Mleiha: navegantes y caravanas antes del Islam. Pp 83-130 (Figure p. 92). In EN LOS CONFINES DE ORIENTE PRÓXIMO: El hallazgo moderno del país de Magán. Museo Arqueológico Nacional Catálogo de la Exposición Temporal Celebrada entre el 18 de abril y el 29 de mayo de 2016. Comisario: J. Mª Córdoba Zoilo. Comisarias adjuntas: C. del Cerro Linares, Mª C. Pérez Díe, E. Pons Mellado Source: Objaverse 1.0 / Sketchfab
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