Geochemistry International

Article	Citations
Features of Mercury Accumulation in the Bottom Sediments of Two Arctic Lakes in West Siberia	13
High-Precision Determination of Carbon Isotope Composition and Concentration of Dissolved Inorganic Carbon in Seawater	11
Evaluation of the Standard Thermodynamic Functions of Hydrate Sulfates of Divalent Metals (Ca, Mn, Cd, Fe, Zn, Cu, Mg, Ni, Co, and Be)	11
Distribution of Organic Matter, Phytopigments, and Microorganisms in the Coastal Soils, Bottom Sediments, and Water of the Tatar Strait in Winter	11
Morphological Features and Genesis of the Interpenetration Twins of Cubic Diamond Crystals	10
Noble Gases, Carbon and Nitrogen Isotopes in Different Lithologies of Pesyanoe: Irradiation History and Impact Processes on the Aubrite Parent Body	10
Formation of Nitrogen-Rich Hot Springs in the Water–Granite and Water–Porphyrite Systems	9
Characterization of Organic Matter in Areas of Methane Emission in the Laptev Sea (Expedition 2016)	9
The Archean Age of Granite-Gneiss Complexes from the Kama–Vyatka Zone (the Volga-Ural Segment, East European Craton)	8
Environment-Forming Effect of Bubble Gas Emissions in the Golubaya Bay, Black Sea: Oxygen Regime and Bacterial Mats	8
Radioactivity Assessment of Sapropel Sediments in Small Lakes in the Baraba Lowland and Kulunda Plain, West Siberia	8
New Data on the Age and Genesis of the Newania Carbonatite Complex, Rajasthan, India	8
Magmatic Complexes of the Stalemate Ridge, Northwest Pacific, and Their Possible Origin	8
Differentiated Estimation of the 137Cs Content on the Biogenic and Lithogenic Suspended Matter in the Black Sea	7
Effect of Elemental Sulfur (S8) on Carbon Isotope Analysis of n-Alkanes	7
Lithological, Mineralogical, and Geochemical Features of the Lower Maeotian Sediments of the Kazantip Nature Reserve, Crimea	7
Advanced Instruments for Identifying Geochemical Dependences of Radionuclide Migration in Natural Waters	7
Deformation Microstructure, Metallic Iron, and Inclusions of Hollow Negative Crystals in Olivine from the Seymchan Pallasite: Evidence of Fe2+ Solid-State Reduction	7
Physical Properties and Internal Structure of the Central Region of the Moon	6
Organic Matter in the Thermal Waters of the Paratunka Geothermal Field, Kamchatka	6
The LA–ICP–MS Zircon U–Pb Ages from the Kuzgun Formation Constrain the Temporal Distribution of the Adana Basin (Southern Turkey)	6
Geochronology and Geochemistry of the Yajiangqiao Plutonic Rocks in the Central South China Block: Implication for Petrogenesis and Tectonic Setting	6
Biogeochemical Features of Holocene Sediments in Oligotrophic Bogs of the Baraba Forest Steppe	5
Assessment of Soil Cover Geochemical Composition in the Technogenically Altered Territory of the Pioneer Gold Deposit (Upper Amur Region)	5
Differentiation of Oils in Tatarstan Based on the Composition of Monoaromatic Steranes	5

A Stepwise Dissolution Method Applied to Isotopic Chemostratigraphic and Geochronological Studies of Riphean Carbonate Rocks of the Baykit Uplift	5
Erratum to: Composition of Phenocrysts in Lamproites of Gaussberg Volcano, East Antarctica	5
The Content and Speciation of Radionuclides in Water and Bottom Sediments of the Laptev Sea	5
Diverse Lavas of the Tigilsky Dol and Mount Oxi Massif (Sredinny Range, Kamchatka): a Perspective from the New Sr–Nd Isotope Data	5
Determination of the Trace-Element Composition of Black Shale Rocks and Ores. Certified Reference Materials SLg-1 and SChS-1	5
Conditions of Formation of the Pentlandite (Fe,Ni1 – x)9S8 and Heazlewoodite Ni3S2 in the Pallasite Seymchan and Dronino Iron Meteorite	5
Application of ICP-MS for Clarification of the Elemental Composition of Geological Reference Materials and Certification of Candidate Reference Materials	4
Assessment of Isotopic Characterization (δ18O, δ2H and 3H) and Hydrochemical Processes of the Springs in Kumalar Mountain Region (Afyonkarahisar, Turkey)	4
The Role of Interactions between Bacteria and Clay Minerals in Pedochemical Processes	4
Heavy Metal Species in the Bottom Sediments of the Aquatic System of Lake Gusinoe (Buryatia)	4
Some Basic Statements of the General Theory of the Universe Evolution at the First Stages of Life	4
Lead Components of Bulk Sediments from Dahu Swamp in Nanling Mountains (South China): Implications for the Climatic and Environmental Changes Since the Last Deglaciation	4
Humification of the Organic Matter in the Surface Bottom Sediments of the East Siberian Sea	4
Study of the Effects of Different Factors on Crystal Growth from Solution: Data of Atomic Force Microscopy	4
Biogeochemistry of Peat Deposits of the Holocene Section of the Vydrino Bog (Southern Baikal Region)	4
Formation Conditions of Gold Mineralization in the Spokoininsky Ore Cluster, Aldan Shield, Russia	4
Impact of Wastewaters from Apatite–Nepheline Production on the Biogeochemical Processes in an Arctic Mountain Lake	4
Nanodiamond of Meteorites: Concentrations and Isolation Kinetics of Possible Initial Xenon Components	4
Organic Matter in Carbonaceous Mineral Waters of the Shmakovka Field, Far East, Russia	4
EPR Spectroscopic and Calorimetric Study of Minerals of the Amblygonite–Montebrasite Series from Rare-Metal Pegmatite of the Voron’i Tundras (Kola Peninsula) and Sangilen Highlands (Tuva)	4
Reasons for the Formation of Acidic Drainage Water in Dumps of Sulfide-Containing Rocks	4
Hydrocarbons in the Littoral Sediments and March Soils of the Southwestern Coast of the Barents Sea	4
Biomarker Hydrocarbons in Autochthonous and Migrated Bitumens in the Precambrian of Ust’-Mayskaya-366 Well, Siberian Platform	4
Carbon Isotope Type-Curves of Organic Matter in Sediments of the Laptev Sea (Seep Area)	3
Gas Composition of Fluids That Formed Ore Deposits over Geological Time: from the Archean through Cenozoic	3
Sodium-Rich Phosphate and Silicate Inclusions in the Troilite Nodule of the Darinskoe Iron Meteorite (IIC)	3
Redox Freezing and Melting during Peridotite Interaction with Carbonated Metasediments and Metabasics: Experiments at 10 GPa	3
Peculiarities of 137Cs Distribution in the Soil–Moss Cover of the Elementary Landscape Geochemical Systems	3
REE Distribution in the Water and Bottom Sediments of Small Lakes within the Ukok Plateau and the Ulagan Depression (Russian Altai)	3
Quartz-Hosted Fluid Inclusions in Commercial Ores of Various Type at the Verninskoe Gold Deposit, Bodaibo District, Russia	3
Geochemistry, Geochronology, and Tectonic Significance of Yuejin Sumu Bimodal-like Intrusive Rocks in Xilinhot, Inner Mongolia	3
Biogenic Migration of Nitrogen and Phosphorus in Saline Drying Lakes in Crimea	3
Modern Concepts on Diamond Genesis	3
Geochemistry and Formation Conditions of Milk-White Quartz Veins in the Maksyutovo Metamorphic Complex, Southern Urals	3
Migration Activity of Elements in the Water of Lakes of Northwestern Russia	3
Natural Distillation of Solutions and Opal Formation in Closed Vapor–Liquid Hydrothermal Systems	3
Evaluation of Mineralogical Composition and Organic Matter Content of Oil Shales by IR Microscopy	3
Geochemistry of the Bottom Sediments of Lake Peyungda, Tunguska Nature Reserve, and Paleoclimatic Reconstructions of the Arctic Territories of Eastern Siberia	3
Distribution of Hydrocarbon Biomarkers with Depth in Marine Sediments in the Area of the Linear Depression of the West Kara Stage	3
Erratum to: Specifics of Chemical Composition Origin of Surface Water in the Arctic Zone of Western Siberia	3
Comparative Analysis of Pleistocene Sediments of the Atlantic Ocean	3
A 47.0-kyr Record of Strontium and Neodymium Isotopes of the Lake Sediments from Dahu Swamp in East Nanling Mountains (South China): Implications for the Source of Sediments and Climatic Changes	3
Trends in Some Geochemical Parameters of Fine-Grained Clastic Rocks of Lower Riphean Sedimentary Sequences in the Northeastern and Central Parts of the Bashkirian Meganticlinorium, Southern Urals	3
Change in the Maturation of Organic Matter and Conversion of the Hydrocarbon Potential in the Burial History of Source Rocks in the Mannar Basin, Offshore Sri Lanka	3
Underwater Discharge of Fluids at the Bottom of Lake Baikal: Composition, Sources, and Migration Peculiarities within the MSU Structure	3
Vertical Distribution of Biomolecules in the Carbonate Sediments and Bacterial Mat of Steppe Alkaline Lake, Eastern Transbaikalia	3
Biogeochemistry of Natural Organic Compounds in Terrestrial Waters: Distribution and Variability during Climate Warming	3
The Accumulation of the REE by Bacterial Fe Oxyhydroxide	3
Mechanism of the Evolutionary Ordering of Biological Systems in Light of Acad. E.M. Galimov’s Theory	3
Simultaneous Calculation of Chemical and Isotope Equilibria Using the GEOCHEQ_Isotope Software: Iron Isotopes	2

Geochemistry of Rocks at the Neskevara Rare-Metal Deposit of the Vuoriyarvi Alkaline–Ultramafic Complex, Kola Peninsula	2
Participation of Small Mammals in the Biogenic Transit of Trace Elements under Chemical Pollution of the Environment	2
Molybdenum Isotopes Behavior in the Dolomite-Terra Rossa Weathering System	2
Biogeochemical Engineering	2
Trace Elements in Olivine of Volcanic Rocks: Application to the Study of Magmatic Systems	2
Geochemistry, Age, and Geodynamic Setting of the Volcanic Rocks of the Indigirka Section of the Uyandina-Yasachnaya Volcanic Belt (Northeast Asia)	2
Hydrodynamic Cavitation as a Natural Mechanism for Diamond Nucleation	2
Speciation of Chemical Elements in the Waters of the Herberz Historical Mine, Karelia, Russia: Thermodynamic Calculations and Fractionation	2
Impact of Irrigation on Arsenic Mobilization in Groundwater from the Hetao Plain, Northern China: Evidence from Cl/Br Ratios and Stable Isotopes	2
Study of Rb-Sr and Sm-Nd Isotopic Systems in Chondrules of the Sierra Gorda 009 and 013 Chondrites and Possible Mechanisms of Their Disturbance	2
Erratum to: A Stepwise Dissolution Method Applied to Isotopic Chemostratigraphic and Geochronological Studies of Riphean Carbonate Rocks of the Baykit Uplift	2
Morphogenetic Abnormalities of Bryobionts in Geochemically Contrasting Conditions of Donbass	2
Hydrocarbons in Water and Bottom Sediments of the Norwegian–Barents Sea Basin	2
A New Reaction Controlling the Composition of Oils: Hydrogenation of Aromatic Hydrocarbons	2
Geochronology and Geochemistry of Mesozoic Granites in the North Qilian Shan: Implications for Petrogenesis and Tectonic Setting	2
Evaporation Features of the Melts of Ca–Al–Inclusions in Chondrites: Experimental Data and Their Implications	2
Geochemistry of Alirajpur Granitoids (Gujarat, India) and Their Genetic Relationship to the Precambrian Basement Underlying the Deccan Traps	2
Heavy Metals and Organic Carbon in the Bottom Sediments of Shallow Bights of the Peter the Great Bay	2
Geochemistry, Monazite (U–Pb–Th) Geochronology, and P-T Pseudosection Modelling of Two-Pyroxene Mafic Granulite from Sonapahar, Shillong Meghalaya Gneissic Complex, India: Implication for Tectono-Meta	2
Geochemical Markers of the Norilsk Ore-Bearing Intrusions: Case Study of the Maslovsky Deposit	2
Elemental Composition and Sources of Urban Dust of a Large Industrial City (Krasnoyarsk, Russia)	2
Composition of Phenocrysts in Lamproites of Gaussberg Volcano, East Antarctica	2
Geochemistry and Mineralogy of Manganese in the Lower Zone of the Lovozero Rare-Metal Deposit, Kola Peninsula	2
Thermodynamic Properties of Pectolite	2
Geochemical Patterns of Mud Volcanic Waters: Reviewed Worldwide Data	2
Theoretical and Methodological Approaches to the Analysis of the Spatial Distribution of Endemic Diseases of Geochemical Nature	2
Study of the Chemical Composition of Ash Nanoparticles from the Volcanoes of Kamchatka	2
Titanium Barrier in Phosphorus Geochemistry	2
Is a Consensus Possible between Geochemical and Geophysical Models of the Internal Structure of the Lunar Mantle?	2
Erratum to: Geochemical Markers of the Norilsk Ore-Bearing Intrusions: Case Study of the Maslovsky Deposit	2
Exsolution in the Au–Au3Cu Region and Correction of the Au–Ag–Cu Phase Diagram	2
Effect of Atmospheric Circulation on the Seasonal Dynamics of the Chemical Composition of the Snow Cover in the Pechora–Ilych Reserve	2
As-Bearing Phosphosiderite from Copiapo District, Atacama, Chile	2
Evolution of the Karoo-Maud Plume and Formation of Mesozoic Igneous Provinces in Antarctica	2
Distribution and Genesis of Hydrocarbons in Water and Sediments of the Kerch Strait	2
Geochemistry of Trace Elements in Minerals of Porphyritic and Nonporphyritic Chondrules from Equilibrated Ordinary Chondrites	2
Biogeochemical Migration and Accumulation of Chemical Elements by Plants in the Aquatic System of the Discharge Channel of the Kola NPP	2
Trace Element Composition of Zircons from Rapakivi Granites of the Gubanov Intrusion, the Wiborg Massif, as a Reflection of the Fluid Saturation of the Melt	2
Neoproterozoic Collision Granitoids in the Southwestern Margin of the Siberian Craton: Chemical Composition, U−Pb Age, and Formation Conditions of the Gusyanka Massif	1
Platinum Group Element Geochemistry in the Ocean	1
Physicochemical Study of Titanium-Bearing Garnets	1
Comparison of Aquifer Sediment Fluoride Levels and FTIR Characteristics in Seawater Intrusion Area and Soil Salinization Areas along Coastal Plains in Shandong Province, China	1
Organic Matter in Hydrotherms of the Pauzhetka Field: Composition and Comparative Analysis with Other Sites	1
Applicability Limits of the Maturity Concept in Organic Geochemistry. II Relationships between the Rates of Reactions of Different Type	1
Feldspar Megacrysts as a Source of Information on Crustal Contamination of Basaltic Melt	1
Paleo-Reconstruction of Heavy Metal Accumulation during the Holocene in Coastal Odisha, India	1
Disequilibrium Uranium (234U/238U) in Natural Aqueous Objects and Climatic Variations: World Ocean	1
Distribution Pattern and Influencing Factors of Soil Selenium in Northern Hebei Province, China	1
Major, Volatile, Ore, and Trace Elements in Magmatic Melts in the Earth’s Dominant Geodynamic Settings. II. Similarities and Differences	1
Depositional Basin, Diagenetic Conditions and Source of Miocene Evaporites in the Tuzluca Basin in Northeastern Anatolia, Turkey: Geochemical Evidence	1
Dynamics of the Biogeochemical Composition of the Sediments from Marine Part of the Marginal Filter under the Influence of the Razdol’naya River Runoff (Amur Bay, Sea of Japan)	1
Formation Conditions of Quartz‒Lazulite Mineralization of Mount Chernaya, Subpolar Urals: Evidence from Study of Fluid Inclusions	1
REE and Fluorite Mineralization Characteristic in Ryongpho Alkaline Intrusion of the Sakju Complex, DPR Korea	1
Organic Compounds and Metals in the Sediments of Meromictic Lakes Separated from the Kandalaksha Gulf of the White Sea	1
Formation of Rainwater Acidity in the Forested Basin of the Sikhote Alin Mountain Region	1
Experimental Study of the $${\text{Mo}}{{{\text{O}}}_{{\text{2}}}}{\text{Cl}}_{{2\left( {{\text{aq}}} \right)}}^{^\circ }$$ Stability in Hydrothermal Solutions at 100–350°C and Saturated Vapor Pressur	1
Geochemistry of Vendian (?) Metasedimentary Rocks of the Byrka Series of the Argun Superterrane	1
Mineralogical, Geochemical and Nd Isotopic Study of the Meta-Clastic Rocks of the Paleoproterozoic Mahakoshal Basin, Central Indian Tectonic Zone: Implications for Provenance Characterization, Paleowe	1
Composition of Volatiles Captured by Diamonds during Growth in the Metal–Carbon–Silicate System at High Pressure and High Temperature	1
An Equation for the Calculation of Saturated Water Contents in Silicate Melts: A New Version	1
Different Types of CaSiO3 in the Earth’s Mantle and Its Geochemical Heterogeneity: the Juina Area in Brazil as an Example	1
Actinides in the Soil Chronosequence of the Amur River Floodplain	1
Morphology and Composition of Condensate Obtained at the Impact Evaporation of Serpentinite	1
Geochemistry and Formation Conditions of Mesoarchean Banded Iron Formations (BIF-1) from the Kostomuksha Greenstone Belt, Karelian Craton	1
Erratum to: Post-Spinel Phases in the Earth’s Mantle	1
Kinetics of Hydrocarbon Formation in the Sedimentary Cover of a Subducting Plate	1
Characteristics of the Accumulation of Metals by Plants and the Activity of Soil Enzymes in Metallogenic Territories of the Northern Caucasus	1
Sr, Nd, Pb, and Os Isotope Systematics and Derivation of Mesozoic Plume-Related Basalts of Antarctica: Karoo-Maud and Kerguelen Plume Realm	1
Features of Loparite Dissolution in Aluminosilicate Melts (Experimental Investigation)	1
Changes in the Geochemistry of Land Waters at Climate Warming and a Decrease in Acid Deposition: Recovery of the Lakes or Their Evolution?	1
Petrogenesis of Cenozoic Basaltic Rocks from the Leiqiong Area, South China: Evidence from Geochemical Constraints	1
Role of Biogeochemical Processes during Groundwater Deferrization	1
Geochemical Criteria for the Classification of Dolerite Dikes in the Central Part of the Baikal Basement Inlier of the Siberian Craton	1
Characteristics and Formation Mechanism of Geothermal Resources in Tectonically Active Regions: A Case Study of the Red River Fault in Western Yunnan Province, China	1
Transfer of Metals under Hydrothermal Conditions in the Form of Colloidal Particles and Supersaturated True Solutions	1
Cadmium in the Eastern Gulf of Finland: Concentrations and Effects on the Mollusk Limecola balthica	1
Organic Matter Source Traced by n-Alkane Records Derived from Sediments of Barkol Lake in Eastern Xinjiang (NW China) and Its Response to Moisture Variability in the Past 8800 Years	1
Experimental Study of Pargasite NaCa2(Mg4Al)[Si6Al2O22](OH)2 Stability at T = 1000–1100°C and Pressure up to $${{P}_{{{{{\text{H}}}_{{\text{2}}}}{\text{O}}}}}$$ = 5 Kbar	1
Sorption-Desorption Behavior of Zn in Common Soil Diagnostic Horizons from Southwestern Iran	1
Biogeochemical Aspects of Local Interaction in the Society–Nature System at Technogenesis of the Biosphere	1

Distribution and Composition of Suspended Particulate Matters at the Atmosphere–Water Boundary (South and Atlantic Oceans)	1
Coalbed Methane Accumulation Indicated by Geochemical Evidences from Fracture-filling Minerals in Huaibei coalfield, East China	1
Organic Matter as a Forming and Transporting Agent in Transfer Processes of PGE and Gold	1
Palaeo-Environmental Reconstruction of Pedogenic Calcretes in Sathankulam, Southern India: An Integrated Approach	1
Geochemical Surface–Water Modification of the Khibiny Mountains since the Launching of a New Mining Enterprise	1
Neoproterozoic Felsic Volcano-plutonic Rocks, Tusham Ring Complex, Malani Igneous Suite, NW Indian Shield: Petrogenetic Modeling, Magmatic Source and Geodynamic Evolution	1
Enthalpies of Formation of Alunite and Natroalunite (According to Calorimetric Data)	1
Spatial Distribution and Ecotoxicological Assessment of Heavy Metals in Bottom Sediments of Yellow River from Inner Mongolia, China	1
Crystallization of Na- and Cs-Bearing Borosilicate Melts: Results of Raman Spectroscopy	1
Vibration Spectra of Double K–Ca, K–Mg, and Na–Mg Carbonates under Pressure	1
Geochemistry of the Massive Dolomites in Eastern Black Sea Region: REE Implications for Dolomite Petrogenesis	1
Erratum to: Trace Element Composition of Discordant Zircon as a Reflection of the Fluid Regime of Paleoproterozoic Granulite Metamorphism (Khapchan Terrane, Anabar Shield)	1
Major, Trace Element and Sr–Nd–Pb Isotopic Geochemistry of Gorshkov Vent (18.02–21.03.2021), Klyuchevskoy Volcano (Kamchatka, Russia): Restarting a New Cycle of Volcanic Activity?	1
Andesite Melt Crystallization under Moderate Hydrogen Pressures: An Experimental Study	1
Biological Role of Trace Elements and Viral Pathologies	1
Peculiarities of the Extraterrestrial Basalts of the Solar System with Reference to the Exoplanet Science: a Brief Review	1
Modes of Occurrence of Artificial Radionuclides in Soils in the Area of the Kola Nuclear Power Plant	1
Kichany Structure of the Archean Tiksheozero Greenstone Belt of the Fennoscandian: Evidence from New Geochemical and Geochronological Data	1
Ecological and Geochemical Assessment of Snow Cover in the Area Affected by the Apatite–Nepheline Production of the Kola Peninsula	1
Pleistocene Sediments of the Gulf of Mexico	1
Erratum to: An Equation for the Calculation of Saturated Water Contents in Silicate Melts: A New Version	1
Compositional Evolution of Calzirtite and Perovskite in Phoscorites and Carbonatites of the Guli Alkaline–Ultramafic Complex, Polar Siberia	1
Reconstructed Characteristics of the Initial Melt of the Kaalamo Multiphase Clinopyroxenite–Gabbronorite–Diorite Intrusion, Northern Ladoga Area, Southern Karelia	1
Structural Ordering of Feldspars as an Indicator of the Temperature of Mineral-Forming Processes	1
History of Iron Accumulation in the Precambrian and Phanerozoic	1
Geochemistry and Radioecology of Waters and Bottom Sediments of the Mzymta River, the Black Sea Coast	1
Erratum to: Geochemistry (TE, REE, Oxygen) of Zircon from Leucogranites of the Belokurikhinsky Massif, Gorny Altai, as Indicator of Formation Conditions	1
Isotope-Geochemical Features of the Migmatites of the Taratash Metamorphic Complex (Southern Urals)	1
Modeling and Predicting the Environment State in the Impact Area of a Copper–Nickel Plant: A Balanced Model of the Transformations of Atmospheric Deposition at the Catchment and in Lake	1
Metagabbro-Dolerites of the Central Part of the Kara Depression, Nenets Autonomous District, Russia: Influence of an Impact Event and the U–Pb (LA–ICP–MS) Age	1
Evaluation of Hydrogeochemical Characteristics of Groundwater in Mt. Erciyes Stratovolcano Aquifers	1
Biogeochemical Aspects of Transformation of Humic Substances and Silicate Rocks during Freezing–Thawing	1
Strontium and Neodymium Isotopic Signatures in Basalt Glasses of the Mid-Atlantic Ridge, 12°–31° N	1
Thermal and Thermochemical Study of Thaumasite	1
Sr–Nd Isotopic Evidence of a Heterogeneous Magmatic Source of Alkaline–Carbonatite Rocks of the Odikhincha Alkaline–Carbonatite Massif (Maimecha-Kotui Province, Siberia)	1
Ferruginous Mineral Waters of Western Transbaikalia: Formation of Gas, Trace Elements, and Dissolved Organic Matter Composition	1
Seasonal Dynamics of CH4 and CO2 Concentrations in Bog Lake Severnoe	1
He–Ne–Ar–N2–CO2 Systematics of Fernando de Noronha Mantle Xenoliths: Confirmation of Mantle Plume Origin	1
Upper Riphean and Lower Paleozoic Quartzite Sandstones of the Circumpolar Urals: Geochemical Characteristics, Source Areas, and Conditions of Formation	1
The Timing and Genesis of Late Paleoproterozoic Molybdenum Mineralization in the East Qinling Molybdenum Belt, China: Constraints from the Zhaiwa Deposit	1