نتایج جستجو برای: mineral deposit

تعداد نتایج: 82901  

Journal: :Minerals 2022

This paper focuses on the scientific problem of quantitative mineralization prediction at large depth in Zaozigou gold deposit, west Qinling, China. Five geological and geochemical indicators are used to establish model. Machine learning Deep algorithms employed for 3D Mineral Prospectivity Mapping (MPM). Especially, Student Teacher Ore-induced Anomaly Detection (STOAD) model is proposed based ...

Journal: :iranian journal of earth science 0
habib mollai department of geology, faculty of sciences, islamic azad university. mashhad branch, mashhad, iran abdol majid yaghubpur tarbiat moallem university, tehran, iran reza sharifiyan attar department of geology, faculty of sciences, islamic azad university. mashhad branch, mashhad, iran

principal skarn deposits along the northern margin of the ahar batholith from west to east include mazraeh, vine and gowdoul skarn deposits. among these skarn deposits, the mazraeh cu-fe skarn deposit is the most typical skarn deposit in the nw iran. this skarn deposit is located 5 km. north of mazraeh village and 20 km north of ahar town. the origin and development of the skarn can be related ...

Journal: :The Journal of biological chemistry 2009
Paul A Price Damon Toroian Joo Eun Lim

One of our goals is to understand the mechanisms that deposit mineral within collagen fibrils, and as a first step we recently determined the size exclusion characteristics of the fibril. This study revealed that apatite crystals up to 12 unit cells in size can access the water within the fibril, whereas molecules larger than a 40-kDa protein are excluded. Based on these observations, we propos...

Journal: :Sustainability 2023

In recent years, the intelligent identification and prediction of ore deposits based on deep learning algorithm image processing technology has gradually become one main research frontiers in field geological metallogenic prediction. However, this method also many problems that need to be solved. For example: (1) There are very few trainable samples containing mineral point labels; (2) features...

Journal: :Diseases of aquatic organisms 2011
Nolwenn Trinkler Jean-François Bardeau Frédéric Marin Maylis Labonne Aurélie Jolivet Philippe Crassous Christine Paillard

The mineral phase of shell repair in the Manila clam Venerupis philippinarum affected by brown ring disease (BRD) was characterised at various scales and at various stages of shell repair by confocal Raman microspectrometry and scanning electron microscopy. Spherulitic and quadrangular aragonite microstructures associated with polyene pigments were clearly observed. Von Kossa staining showed th...

2006
J. P. Liu

A predominant sigmoidal clinoform deposit extends from the Yangtze River mouth southwards 800 km along the Chinese coast. This clinoform is thickest ( 40m) between the 20 and 30m isobaths and progressively thins offshore, reaching water depths of 60 and 90m and distances up to 100 km offshore. Clay mineral, heavy metal, geochemical and grain-size analyses indicate that the Yangtze River is the ...

2018
Jianping Liu Weikang Chen Qingquan Liu

Although native bismuth is a relatively common mineral, native antimony is less abundant, and Sb-Bi alloys are relatively rare phases in Nature. Sb-Bi alloys and Ag-Cu-Pb-Sb-Bi sulphosalts have been discovered in the Jialong vein-type Cu-Sn deposit in North Guangxi, South China. The Jialong deposit is hosted by schist within the contact zone of a Neoproterozoic granite. Four stages of ore forma...

Journal: :journal of tethys 0

pb-zn deposits in the kurdistan region, northern iraq, have occurred mainly as a stratabound and open-space filling ore bodies. they are hosted by dolostone and dolomitic-limestone of platform carbonates. the ore deposits at the studied dure and lefan areas are respectively hosted by kurra chine (upper triassic) and bekhme (upper cretaceous) formations. pyrite, sphalerite and galena are the maj...

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