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Polymorphism and Polymorphic Transformations Transformation Order—Disorder
This chapter shows that the crystal is a dynamic entity since, at temperatures different from absolute zero, the atoms, ions or molecules that form...
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The Systematics of Crystal Polymorphic Transformations (Generalized on the Basis of Buerger’s Criteria)
Abstract —An extended (3 × 3) classification of polymorphic transformations is proposed with the zeroth coordination sphere added to spheres I and II...
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High-temperature Behavior of PtBi2 and Possibility of Using the Mineral Insizwaite as a Geothermometer
AbstractThe article presents investigation of polymorphic transformations of the PtBi 2 phases that occur during heating in inert atmosphere and in...
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The Crystal World of Zirconium Oxide
Zirconium oxide is a polymorphic material and occurs in three different crystal lattices. Lattice transformations are described in this chapter,...
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Factors inducing morphological transition in harmful algal bloom-forming species Phaeocystis globosa with emphasis on predator chemical cue
The microalga Phaeocystis globosa is recognized as a harmful alga and also one of the few keystone phytoplankton genera that shape the structure and...
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Variability of Stishovite Genesis under Terrestrial Conditions: Physicogeochemical Aspects
AbstractA model of the genesis of stishovite and other SiO 2 phases in terrestrial matter is developed; it combines the physicochemical and...
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Petrographic analysis of Krem (cave) Mawmluh stalagmite from Meghalaya, northeast India
AbstractIn the northeastern states of India, an in-cave expedition to Krem (cave) Mawmluh in Meghalaya has been carried out to document and study the...
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Crystal structures inherited from parent high-temperature disordered microblocks: Ca2SiO4, Na2SO4–K2SO4 sulfates, and related minerals (bubnovaite and dobrovolskyite)
Crystal structures of Ca 2 SiO 4 , Na 2 SO 4 –K 2 SO 4 sulfates, and related minerals bubnovaite K 2 Na 8 Ca(SO 4 ) 6 and dobrovolskyite Na 4 Ca(SO 4 ) 3 were described as...
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A unifying basis for the interplay of stress and chemical processes in the Earth: support from diverse experiments
The interplay between stress and chemical processes is a fundamental aspect of how rocks evolve, relevant for understanding fracturing due to...
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A Thermal Study of the New Mineral Belomarinaite KNaSO4
AbstractFor the first time, the thermal behavior of a new mineral belomarinaite KNaSO 4 from volcanic exhalations (trigonal crystal system, Sp. gr. P 3
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Metastable Crystallization and Structural Complexity of Minerals
AbstractThe physical basis has been elaborated for Goldsmith’s rule that states that the “ease” of crystallization of minerals is related to the...
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In situ X-ray diffraction study of chrysotile at high P–T conditions: transformation to the 3.65 Å phase
The behavior of chrysotile Mg 3 (Si 2 O 5 )(OH) 4 in water medium at simultaneously high pressure and high temperature was studied by in situ synchrotron...
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Thermal Transformation of a Synthetic Analogue of Insizwaite PtBi2 on Air
AbstractHigh-temperature transformation of β-PtBi 2 , a synthetic analogue of insizwaite, was studied under oxidizing conditions (on air). The...
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Density Models of the Tectonosphere of Continents and Oceans
AbstractDensity modeling of the Earth’s crust and upper mantle along a system of profiles that cross Eurasia and North America, the Atlantic and...
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Zirconium Oxide: A Versatile Material
This chapter gives a compact presentation of zirconium oxide and its manifestations. It thus serves as an introduction to the following Chaps....
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Simultaneous Thermal Analysis (STA): A Powerful Tool for Forensic Investigation of Geomaterials
The use of thermal methods has become common in modern geomaterial analysis laboratories. The simultaneous thermal analysis (STA) represents a valid...
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Iron and Its Compounds in the Earth’s Core: New Data and Ideas
AbstractIron is the most abundant chemical element of the Earth’s core and makes up more than 85 wt % of its mass, with the remaining ~15% thought to...
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Laboratory Possibility for Revealing Stages and Conditions of High-Temperature Firing of Mud Breccia Using Acoustic Emission
AbstractThe process of laboratory high-temperature effect on the sample of mud breccia, collected in the Bulganak mud-volcanic field, was...
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Physicogeochemical Evolution of Melts of Superplumes Uplift from the Lower Mantle to the Transition Zone: Experiment at 26 and 20 GPa
Abstract—A radical transformation of the liquidus structure of the MgO–FeO–CaO–SiO 2 system of thermochemical superplumes formed in the Mg–Fe...
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Population Structure of European Anchovy Engraulis encrasicolus (L.) (Engraulidae: Pisces) in the Azov-Black Sea Basin
The main results of over 100-year research on the intraspecific heterogeneity of European anchovy Engraulis encrasicolus (L.) in the Azov-Black Sea...
