The Nakhodka ore field (NOF) is situated in the Baimka Trend, Chukotka, Russia, and comprises the Vesenny epithermal Au–Ag, and Malysh, Nakhodka, Vesenny III, and Pryamoy porphyry Cu-Au ± Mo deposits. Porphyry and epithermal mineralization of the NOF are hosted by Early Cretaceous diorite and monzonite intrusions, which are dated at 139–141 Ma (U–Pb zircon). The NOF mineralization is structurally controlled. The prevailing stress field during the evolution in the Baimka dextral shear zone (also known as Baimka Trend) has led to the formation of extensional and strike-slip structures that control distinct zones with strong quartz-sericite alteration and sheeted high-grade quartz–sulfide veining; characteristics that are similar to the world-class Peschanka porphyry Cu-Au deposit located about 20 km to the NW of the NOF. Four types of hydrothermal alteration are documented in the NOF: (1) potassic, (2) propylitic, (3) quartz-sericite, and more rarely (4) argillic. Two phases of porphyry-style mineralization are distinguished: (1) early-stage quartz-magnetite veining associated with potassic alteration and (2) sheeted quartz-sulfide (bornite, chalcopyrite, molybdenite, pyrite) veining that is spatially associated with a strong quartz-sericite alteration assemblage. Epithermal Au–Ag mineralization belongs to the intermediate-sulfidation type and consists of gold-bearing polymetallic quartz-dolomite ± rhodochrosite veins and veinlets. The NOF is defined by a distinct geochemical zonation. Geophysical data show that the high-grade stockwork zones at the Vesenny III porphyry Cu-Au deposit are defined by pronounced magnetic anomalies reflecting abundant hydrothermal magnetite veining, while the Vesenny epithermal Au–Ag deposit is defined by a strong negative magnetic anomaly due to strong silicification and magnetite-destructive quartz-sericite to argillic alteration.

Nakhodka 矿田 (NOF) 位于俄罗斯楚科奇的 Baimka Trend，包括 Vesenny 浅成热液 Au-Ag 和 Malysh、Nakhodka、Vesenny III 和 Pryamoy 斑岩 Cu-Au ± Mo 矿床。NOF 的斑岩和浅热成矿由早白垩世闪长岩和二长岩侵入体组成，其年代为 139-141 Ma（U-Pb 锆石）。NOF 矿化在结构上受到控制。Baimka右旋剪切带（也称为Baimka趋势）演化过程中的主要应力场导致形成伸展和走滑构造，这些构造控制具有强烈石英绢云母蚀变和片状高级石英硫化物的不同区域脉络; 其特征类似于位于 NOF 西北约 20 公里处的世界级 Peschanka 斑岩铜金矿床。NOF 中记录了四种类型的热液蚀变：(1) 钾质，(2) 青石质，(3) 石英绢云母，以及更罕见的 (4) 泥质蚀变。区分了两个斑岩型矿化阶段：（1）与钾蚀变相关的早期石英磁铁矿脉和（2）在空间上与强石英相关的片状石英硫化物（斑铜矿、黄铜矿、辉钼矿、黄铁矿）脉-绢云母变质组合。浅成热液型金银矿化属于中硫化型，由含金多金属石英-白云石±菱锰矿脉和细脉组成。NOF 由独特的地球化学分带定义。