A TEM INVESTIGATION OF NICKEL ORE MINERALS FROM NEW CALEDONIA: NEW IMPLICATIONS FOR TECTONICS, HEALTH, AND ENVIRONMENTAL SAFETY

2016 ◽  
Author(s):  
Brittany A. Cymes ◽  
◽  
Mark P.S. Krekeler ◽  
Kirsten N. Nicholson ◽  
Jeffry D. Grigsby
Keyword(s):  
New Caledonia ◽  
Environmental Safety ◽  
Ore Minerals

La genese et l'evolution des gisements de nickel de la Nouvelle-Caledonie

1947 ◽  
Vol S5-XVII (1-3) ◽  
pp. 105-160 ◽  
Author(s):  
E. de Chetelat
Keyword(s):  
New Caledonia ◽  
Parent Rock ◽  
Minor Role ◽  
Genetic Process ◽  
Ore Minerals ◽  
Nickel Ores ◽  
Magnesium Silicates ◽  
A Minor

Abstract The nickel ores of New Caledonia are the product of concentration of hydrous nickel and magnesium silicates during laterization of peridotite. The ore minerals are primary magmatic constituents of the parent rock, which is considered to have been intruded in the Tertiary. Serpentinization of the peridotite plays only a minor role in the genetic process; impermeable serpentinized zones acted as a barrier to the further migration of nickel-bearing solutions and thus aided concentration.

scholarly journals “Garnierite” in weathering crust of ultramafic blocks from Cao Bang area, north Viet Nam

2020 ◽  
Vol 42 (2) ◽  
pp. 130-140
Author(s):  
Pham Thanh Dang ◽  
Pham Tich Xuan ◽  
Nguyen Van Pho
Keyword(s):  
New Caledonia ◽  
Magnesium Silicate ◽  
Rock Surface ◽  
Weathering Crust ◽  
Epma Analysis ◽  
Fe Content ◽  
Tropical Conditions ◽  
Nickel Deposits ◽  
Ore Minerals ◽  
Area North

"Garnierite" is an important group of ore minerals in the supergene nickel deposits. Garnierite group minerals are Ni-bearing hydrous magnesium silicate formed due to the lateritic weathering of ultramafic rocks under humid tropical conditions. In the weathering crust on ultra-mafic blocks Ha Tri and Phan Thanh (Cao Bang province), garnierite group minerals have been found in the saprolite zone or as a coating on the surface of the fissures. Analytical results show that garnierite consists of a mixture of three solid solutions: (i) serpentine-like - 7Ao (lizardite-nepouite), (ii) talc-like - 10 Ao (pimelite-willemseite) and (iii) chlorite-like - 14 Ao (clinochlore-minite). EPMA analysis shows that garnierite in Cao Bang area is characterized by high Ni content (25.50-40.06%), low Fe content (0.09-0.9%) and almost no Al (<0.02%), similar to garnierite in the famous nickel mines in New Caledonia, Dominican Republic, etc... Notable, Ni and Mg contents in garnierite show a clear negative correlation, indicating the replacement for each other in the phases. Under the scanning electron microscope (SEM), garnierite has a raspberry shape forming continuous zones covering the unfinished weathered rock surface. These zones represent different stages of garnierite formation. The results of the study allow proposing a model of garnierite formation in the lateritic weathering zone in ultramafic blocks in the Cao Bang area.

scholarly journals “Garnierite” in weathering crust of ultramafic blocks from Cao Bang area, north Viet Nam

2020 ◽  
Vol 42 (2) ◽  
pp. 130-140
Author(s):  
Pham Thanh Dang ◽  
Pham Tich Xuan ◽  
Nguyen Van Pho
Keyword(s):  
New Caledonia ◽  
Magnesium Silicate ◽  
Rock Surface ◽  
Weathering Crust ◽  
Epma Analysis ◽  
Fe Content ◽  
Tropical Conditions ◽  
Nickel Deposits ◽  
Ore Minerals ◽  
Area North

"Garnierite" is an important group of ore minerals in the supergene nickel deposits. Garnierite group minerals are Ni-bearing hydrous magnesium silicate formed due to the lateritic weathering of ultramafic rocks under humid tropical conditions. In the weathering crust on ultra-mafic blocks Ha Tri and Phan Thanh (Cao Bang province), garnierite group minerals have been found in the saprolite zone or as a coating on the surface of the fissures. Analytical results show that garnierite consists of a mixture of three solid solutions: (i) serpentine-like - 7Ao (lizardite-nepouite), (ii) talc-like - 10 Ao (pimelite-willemseite) and (iii) chlorite-like - 14 Ao (clinochlore-minite). EPMA analysis shows that garnierite in Cao Bang area is characterized by high Ni content (25.50-40.06%), low Fe content (0.09-0.9%) and almost no Al (<0.02%), similar to garnierite in the famous nickel mines in New Caledonia, Dominican Republic, etc... Notable, Ni and Mg contents in garnierite show a clear negative correlation, indicating the replacement for each other in the phases. Under the scanning electron microscope (SEM), garnierite has a raspberry shape forming continuous zones covering the unfinished weathered rock surface. These zones represent different stages of garnierite formation. The results of the study allow proposing a model of garnierite formation in the lateritic weathering zone in ultramafic blocks in the Cao Bang area.

Resilience among adolescents within the child protective services system: A focus on environmental safety

2008 ◽  
Author(s):  
Sofia R. Pannia ◽  
Christine M. Wekerle ◽  
Randy Waechter ◽  
Eman Leung ◽  
Maria M.N. Chen
Keyword(s):  
Child Protective Services ◽  
Environmental Safety ◽  
Protective Services ◽  
System A

Potential new sources of natural dyes from the traditional pharmacopoeia of New-Caledonia

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
M Toussirot ◽  
E Hnawia ◽  
D Cardon ◽  
W Nowik ◽  
A de la Sayette ◽  
...  
Keyword(s):  
New Caledonia ◽  
Natural Dyes ◽  
Traditional Pharmacopoeia

THE NATURE OF LEGAL RESTRICTIONS IN ENVIRONMENTAL LAW

2019 ◽  
pp. 142-150
Author(s):  
Galyna Moroz
Keyword(s):  
Environmental Law ◽  
Functional Results ◽  
Environmental Safety ◽  
Educational Process ◽  
Practical Significance ◽  
Practical Implementation ◽  
The Status ◽  
Environmental Requirements ◽  
Content System ◽  
Legal Restrictions

Purpose. The article is aimed at analyzing the general theoretical principles and the essential characteristics of legal restrictions in environmental law; defining category of “environmental legal restrictions”, their content, system and the status of the respective legislation. Methodology. The methodology consists in carrying out a comprehensive analysis of the provisions of environmental legislation and formulating relevant conclusions on this basis. During the research, the following methods of scientific research were used: terminological, systemic and structural, comparative legal, structural and functional. Results. The objectively determined necessity of unconditional adherence to the legally established environmental requirements, prohibitions and restrictions as well as their potential scientifically substantiated enhancement in order to achieve environmentally significant goals oriented towards the priorities of sustainable development is substantiated. Restrictive mechanisms are scattered across statutory and regulatory acts of different legal force and even different branches of law, therefore, the need for their systematization and unification as well as generalization of the experience of their practical implementation in order to establish a comprehensive system of environmental restrictions is discussed. In our opinion, the conceptual basis and general essential characteristics of public environmental requirements and restrictions should be reflected in the future Environmental Code of Ukraine. Scientific novelty. In the course of the research, the author defines restrictions in environmental law as a specific sectoral imperative mechanism for regulating relations in the field of environmental safety, which consists in systematically introducing legislation on imperative provisions of environmental law as well as establishing specific legal regimes and mechanisms for their application and implementation. Practical significance. The main conclusions can be used in law-making and law-enforcing activities, as well as in further theoretical and legal research and in the educational process.

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