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"The epithermal Arinem veins system of gold-silver-base metal mineralization is located in the Arinem area in the southwestern part of Java Island, Indonesia. The veins are composed predominantly of quartz+calcite±illite±kaolinite with variable amount of manganese oxide and limonite and high amount of sulfides. The deposit contains a number of Tebearing minerals, notably tellurides and tellurosulfide minerals. The tellurium mineral assemblages in the Arinem and Bantarhuni veins are similar in the presence of hessite (Ag Te), petzite (Ag AuTe ), stutzite (Ag Te ), tetradymite (Bi Te S) 2 3 2 5 3 2 2 dan altaite (PbTe). The tellurium mineral assemblages vary from sample to sample and most of the observed telluride occurrences consist of at least 2 different phases (e.g. petzite-hessite, tetradymite-hessite, petzite-hessite-altaite). Gold concentrations measured in Te-mineral of petzite from the Arinem vein are in the range between 14.24 to 18.32 wt%. Some hessite and stutzite contain gold up to 3.48 and 1.10 wt%, respectively. Some of electrums are present as inclusions in Te-mineral patches in both veins."

"ABSTRAKThis paper analyzes the change in distance elasticity of trade using bilateral trade data among China and Indonesia and their main trading partners. The empirical method used in this study derived from the gravity model that considers the effect of distance on trade activities behavior. Two causes of change in the elasticity of trade to distance will be exposed, i.e., the distance sensitivity effect (within industries) and the compositional effect (among industries). Specifically, this study would like to prove whether the distance sensitivity effect is more dominant than the compositional effect in explaining the change in distance elasticity of trade. By using four sub-periods and around two hundred industries involved, the result shows that the increase in the role of distance in trade heavily caused by the escalation of distance sensitivity effect in most industries."