Stone-Tool Workshops of the Hatrurim Basin, Israel

Vapnik, Yevgeny; Galuskina, Irina O.; Palchik, V.; Sokol, Ellina V.; Galuskin, Evgeny V.; Lindsley‐Griffin, Nancy; Stracher, Glenn B.

doi:10.1016/b978-0-444-59509-6.00010-7

Cited by 3 publications

(12 citation statements)

References 30 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rock-forming minerals of Ca-rich paralavas are gehlenite, Ca 3 Si 3 O 9 and Ca 2 SiO 4 modifications, rankinite, Ti-rich andradite, kalsilite, fluorapatite-fluorellestadite solid solutions. Their accessory assemblages are highly variable and a lot of rare and new minerals came from this rock type [1, 24,32,52,55,59].…”

Section: Combustion Metamorphic Rocks Within the Hatrurim Basinmentioning

confidence: 99%

“…Given the extreme complexity of the Hatrurim Basin, it appears reasonable to limit this consideration to larnite-bearing CM rocks found at all hypsometric levels [1,4,32,48,76], mainly in the northern and central parts of the basin near the Har Parsa, Har Ye'eleim and Hatrurim cross-road areas (Figures 2 and 3). They occur as lenses or occasionally as cliff exposures, commonly in zones of brecciated country rocks, and are often brecciated themselves.…”

Section: Combustion Metamorphic Rocks Within the Hatrurim Basinmentioning

confidence: 99%

“…Their original sizes are hard to estimate because of high-grade retrograde metamorphism. Individual bodies of larnitic CM rocks were described in previous publications [1,4,25,26,32,48,64,76].…”

Section: Combustion Metamorphic Rocks Within the Hatrurim Basinmentioning

confidence: 99%

“…Figures 7A and 9B illustrate the complex structure resulting from the combination of two twinning systems that formed during cooling of natural rocks as a consequence of advanced α-to-α H transition and subsequent α L -to-β inversion. The discovery of such textures in natural samples provides unambiguous evidence that the primary phase Ca 2 SiO 4 (ss) was growing in the stability field of the α-modification at T >1000 • C [4,32,52,88]. However, precise temperature estimation based solely on the textural features of Ca 2 SiO 4 (ss) is hardly possible without knowledge of the solid solution compositions (for some reasons discussed below).…”

Section: Phase Relations and Transitions In The Ca 2 Sio 4 Systemmentioning

confidence: 99%

“…The α H phase existing in equilibrium with α-Ca 2 SiO 4 (ss) at 1280 • C forms at the maximum rate around 1100 • C regardless of the chemical composition [89]. Episodically, the cooling rate in natural CM processes at T >1200 • C becomes rapid enough to ensure quenching of flamite [4,32,52,88], but usually the α -Ca 2 SiO 4 phase inverts completely to larnite (β-Ca 2 SiO 4 ) ( Table 2).…”

Section: Phase Relations and Transitions In The Ca 2 Sio 4 Systemmentioning

confidence: 99%

See 4 more Smart Citations

Mineralogical Diversity of Ca2SiO4-Bearing Combustion Metamorphic Rocks in the Hatrurim Basin: Implications for Storage and Partitioning of Elements in Oil Shale Clinkering

et al. 2019

View full text Add to dashboard Cite

This is the first attempt to provide a general mineralogical and geochemical survey of natural Ca 2 SiO 4 -bearing combustion metamorphic (CM) rocks produced by annealing and decarbonation of bioproductive Maastrichtian oil shales in the Hatrurim Basin (Negev Desert, Israel). We present a synthesis of data collected for fifteen years on thirty nine minerals existing as fairly large grains suitable for analytical examination. The Hatrurim Ca 2 SiO 4 -bearing CM rocks, which are natural analogs of industrial cement clinker, have been studied comprehensively, with a focus on several key issues: major-and trace-element compositions of the rocks and their sedimentary precursors; mineral chemistry of rock-forming phases; accessory mineralogy; incorporation of heavy metals and other trace elements into different phases of clinker-like natural assemblages; role of trace elements in stabilization/destabilization of Ca 2 SiO 4 polymorphic modifications; mineralogical diversity of Ca 2 SiO 4 -bearing CM rocks and trace element partitioning during high-temperature-low-pressure anhydrous sintering. The reported results have implications for mineral formation and element partitioning during high-temperature-low-pressure combustion metamorphism of trace element-loaded bituminous marine chalky sediments ("oil shales") as well as for the joint effect of multiple elements on the properties and hydration behavior of crystalline phases in industrial cement clinkers.

show abstract

Section: Combustion Metamorphic Rocks Within the Hatrurim Basinmentioning

confidence: 99%

Section: Combustion Metamorphic Rocks Within the Hatrurim Basinmentioning

confidence: 99%

Section: Combustion Metamorphic Rocks Within the Hatrurim Basinmentioning

confidence: 99%

Section: Phase Relations and Transitions In The Ca 2 Sio 4 Systemmentioning

confidence: 99%

Section: Phase Relations and Transitions In The Ca 2 Sio 4 Systemmentioning

confidence: 99%

See 3 more Smart Citations

Mineralogical Diversity of Ca2SiO4-Bearing Combustion Metamorphic Rocks in the Hatrurim Basin: Implications for Storage and Partitioning of Elements in Oil Shale Clinkering

et al. 2019

View full text Add to dashboard Cite

show abstract

Photoluminescence of Ce3+ and Eu2+ in low-P ternesite from the Negev Desert, Israel

2017

View full text Add to dashboard Cite

For the first time, the photoluminescence of ions of Ce 3+ and Eu 2+ in natural low-P ternesite has been measured. The emission bands of Ce 3+ ions at 405, 426, and 440 nm and the corresponding excitation wavelengths suggest the presence of Ce 3+ ions in three different cationic sites. In the photoluminescence spectra of Eu 2+ , emission bands at 530 and 620 nm can be seen that originate from two different cationic sites. In addition, it is demonstrated that an energy transfer occurs between Ce 3+ and Eu 2+ ions situated in those cationic sites where the force of the crystallic field is weakest. The photoluminescence spectra were obtained for a thin section sample with low contents of these two elements (41.2 ppm Ce, 2.11 ppm Eu).

show abstract

Nataliakulikite, Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11, a New Perovskite-Supergroup Mineral from Hatrurim Basin, Negev Desert, Israel

et al. 2019

View full text Add to dashboard Cite

Nataliakulikite, Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11, is a mineral intermediate between perovskite CaTiO3 and brownmillerite Ca2(Fe,Al)2O5. It was discovered as a minor mineral in a high-temperature pyrometamorphic larnite-gehlenite rock at the Nahal Morag Canyon of the Hatrurim Basin, Israel. Nataliakulikite is associated with larnite, flamite, gehlenite, magnesioferrite, Fe3+-rich perovskite, fluorapatite, barite, Hashemite, and retrograde phases (afwillite, hillebrandite, portlandite, calcite, ettringite, hydrogarnet, and other hydrated Ca-silicates). The mineral forms brown subhedral or prismatic grains (up to 20 µm) and their intergrowths (up to 50 μm). Its empirical formula (n = 47) is (Ca3.992Sr0.014U0.004)(Ti1.933Zr0.030Nb0.002) (Fe3+0.610Fe2+0.405Cr0.005Mn0.005)(Si0.447Fe3+0.337Al0.216)O11 and shows Si predominance in tetrahedral site. The unit-cell parameters (HRTEM data) and space group are: a = 5.254, b = 30.302, c = 5.488 Å, V = 873.7 Å3, Pnma, Z = 4. These dimensions and Electron backscatter diffraction (EBSD) data strongly support the structural identity between nataliakulikite and synthetic Ca4Ti2Fe3+2O11 (2CaTiO3∙Ca2Fe3+2O5), an intermediate compound in the system CaTiO3-Ca2Fe3+2O5. In general, this mineral is a Si-Fe2+-rich natural analog of synthetic Ca4Ti2Fe3+2O11. The X-ray powder diffraction data (CuKα -radiation), calculated from unit-cell dimensions, show the strongest lines {d [Å], (Icalc)} at: 2.681(100), 1.898(30), 2.627(26), 2.744(23), 1.894(22), 15.151(19), 1.572(14), 3.795(8). The calculated density is 4.006 g/cm3. The crystal structure of nataliakulikite has not been refined because of small sizes of grains. The Raman spectrum shows strong bands at 128, 223, 274, 562, and 790 cm−1. Nataliakulikite from the Hatrurim Basin crystallized under the conditions of combustion metamorphism at high temperatures (1160–1200 °C) and low pressures (HT-region of the spurrite-merwinite facies).

show abstract

Stone-Tool Workshops of the Hatrurim Basin, Israel

Cited by 3 publications

References 30 publications

Mineralogical Diversity of Ca2SiO4-Bearing Combustion Metamorphic Rocks in the Hatrurim Basin: Implications for Storage and Partitioning of Elements in Oil Shale Clinkering

Mineralogical Diversity of Ca2SiO4-Bearing Combustion Metamorphic Rocks in the Hatrurim Basin: Implications for Storage and Partitioning of Elements in Oil Shale Clinkering

Photoluminescence of Ce3+ and Eu2+ in low-P ternesite from the Negev Desert, Israel

Nataliakulikite, Ca4Ti2(Fe3+,Fe2+)(Si,Fe3+,Al)O11, a New Perovskite-Supergroup Mineral from Hatrurim Basin, Negev Desert, Israel

Contact Info

Product

Resources

About