Jan Graffelman,Vera Pawlowsky-Glahn,Juan José Egozcue et al.
Jan Graffelman et al.
The study of the relationships between two compositions is of paramount importance in geochemical data analysis. This paper develops a compositional version of canonical correlation analysis, called CoDA-CCO, for this purpose. We consider t...
Test of vegetation-based surface exploration for detection of Arctic mineralizations: The deep buried Kangerluarsuk Zn-Pb-Ag anomaly [0.03%]
基于植被的北极矿物表观探测测试：Kangerluarsuk Zn-Pb-Ag异常体深埋探测
Anders R Johnsen,Tonny B Thomsen,Simon M Thaarup
Anders R Johnsen
The aim of our study was to test whether surficial geochemical techniques are applicable under arctic conditions where pedogenesis is slow or absent, and where the vegetation is arctic dwarf shrub tundra. To this end, we sampled vegetation ...
Mechanisms for Pd-Au enrichment in porphyry-epithermal ores of the Elatsite deposit, Bulgaria [0.03%]
保加利亚Elatsite矿床斑岩表生热液矿石中钯金富集机制研究
José M González-Jiménez,Rubén Piña,Thomas N Kerestedjian et al.
José M González-Jiménez et al.
Porphyry Cu can contain significant concentrations of platinum-group elements (PGE: Os, Ir, Ru, Rh, Pt, Pd). In this study, we provide a comprehensive in situ analysis of noble metals (PGE, Au, Ag) for (Cu-Fe)-rich sulfides from the Elatsit...
Mapping of compositional properties of coal using isometric log-ratio transformation and sequential Gaussian simulation - A comparative study for spatial ultimate analyses data [0.03%]
应用等距对数比变换和序列高斯模拟进行煤炭成分属性的空间插值及对比研究
C Özgen Karacan,Ricardo A Olea
C Özgen Karacan
Chemical properties of coal largely determine coal handling, processing, beneficiation methods, and design of coal-fired power plants. Furthermore, these properties impact coal strength, coal blending during mining, as well as coal's gas co...
Zhizhong Cheng,Xuejing Xie,Wensheng Yao et al.
Zhizhong Cheng et al.
The 76-element Geochemical Mapping (76 GEM) Project was undertaken in southwestern China in 2000 and in southeastern China in 2008. In this project, 5244 composite samples of stream sediment at a density of one composite sample for each 1:5...
Enrichment of Arsenic in Surface Water, Stream Sediments and Soils in Tibet [0.03%]
西藏地表水、河流沉积物和土壤中砷的富集规律研究
Shehong Li,Mingguo Wang,Qiang Yang et al.
Shehong Li et al.
Groundwater in sedimentary deposits in China, Southern, and Southeast Asia down gradient from the Tibetan plateau contain elevated As concentrations on a regional scale. To ascertain the possibility of source region As enrichment, samples o...