Abstract
Ye’elimite-larnite rocks in the Hatrurim formation of the Negev Desert, Israel, are natural analogs of belite sulfoaluminate (BSA) cement clinkers. They have been produced by ultrahigh-temperature combustion metamorphism at ambient pressure of a calcareous sedimentary precursor. Their mineralogy consists of 35-50 vol% β-Ca2SiO4, 15-20 vol% ye’elimite, 7-15 vol% ferrites, and 15-20 vol% fluorapatite and/or fluorellestadite. A few grains of hatrurite (Ca3SiO5) and α′-Ca2SiO4 have been observed as well. The composition of α′- and β-Ca2SiO4 polymorphs by EPMA are near Ca1.96-1.98Na0.01-0.02 Si0.96P0.03Al0.01O4, whereas ye’elimite has an approximate composition by EPMA of Ca3.99Mg0.02Ba0.01 Na0.02K0.02Al5.73Fe3+0.16Si0.10S0.97P0.02O16. The Al content of brownmillerite Ca2(Fe1-xAlx)2O5 ranges from x = 0.20-0.27. Fe-analog of shulamitite (Ca3Fe2TiO8) contains up to 15.1 wt% TiO2. Ye’elimite-larnite rocks were derived from chalky sediments by burning of combustible gas with a Tmax at 1200-1350 °C. The mineral content, microstructure, and texture/fabric of the ye’elimite-larnite rocks imply that chalky and/or marly sediments with randomly distributed clay, phosphorite, and gypsum may be utilized as cheap naturally homogenized and pulverized mixtures for industrial production of BSA cement clinker, as an environment-friendly alternative to ordinary Portland cement (OPC).
© 2014 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Highlights and Breakthroughs
- An alternative to alteration and melting processes in the Earth: Reaction between hydrogen (H2) and oxide components in the Earth in space and time
- The crystallographic and petrogenetic significance of pegmatite phosphates
- Small grains and big implications: Accessory Ti- and Zr-minerals as petrogenetic indicators in HP and UHP marbles
- What Lurks in the Martian Rocks and Soil? Investigations of Sulfates, Phosphates, and Perchlorates
- Natural Fe-bearing oxides and sulfates from the Rio Tinto Mars analog site: Critical assessment of VNIR reflectance spectroscopy, laser Raman spectroscopy, and XRD as mineral identification tools
- Dissolution rates of amorphous Al- and Fe-phosphates and their relevance to phosphate mobility on Mars
- Stability and spectroscopy of Mg sulfate minerals: Role of hydration on sulfur isotope partitioning
- Synthesis and characterization of the Mars-relevant phosphate minerals Fe- and Mg-whitlockite and merrillite and a possible mechanism that maintains charge balance during whitlockite to merrillite transformation
- Minerals in the Human Body
- Determination of the concentration of asbestos minerals in highly contaminated mine tailings: An example from abandoned mine waste of Crètaz and Èmarese (Valle d’Aosta, Italy)
- Spinels Renaissance: The past, present, and future of those ubiquitous minerals and materials
- Pressure-volume equation of state for chromite and magnesiochromite: A single-crystal X-ray diffraction investigation
- The systematics of the spinel-type minerals: An overview
- Chemistry and Mineralogy of Earth’s Mantle
- Formation of SiH4 and H2O by the dissolution of quartz in H2 fluid under high pressure and temperature
- Identifying the spin transition in Fe2+-rich MgSiO3 perovskite from X-ray diffraction and vibrational spectroscopy
- Mantle-derived guyanaite in a Cr-omphacitite xenolith from Moses Rock diatreme, Utah
- Pluton assembly and the genesis of granitic magmas: Insights from the GIC pluton in cross section, Sierra Nevada Batholith, California
- First-principles molecular dynamics simulations of MgSiO3 glass: Structure, density, and elasticity at high pressure
- A new UHP metamorphic complex in the ~1.8 Ga Nagssugtoqidian Orogen of West Greenland
- Visible and short-wave infrared reflectance spectroscopy of REE fluorocarbonates
- Volatile abundances of coexisting merrillite and apatite in the martian meteorite Shergotty: Implications for merrillite in hydrous magmas
- Sb5+ and Sb3+ substitution in segnitite: A new sink for As and Sb in the environment and implications for acid mine drainage
- First-principles elasticity of monocarboaluminate hydrates
- Substitution of Ti3+ and Ti4+ in hibonite (CaAl12O19)
- Exploring the effect of lithium on pegmatitic textures: An experimental study
- XANES measurements of Cr valence in olivine and their applications to planetary basalts
- Z-contrast imaging and ab initio study on “d” superstructure in sedimentary dolomite
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