Porphyry copper prospect in Khabarovskiy kray, Russian Federation

Names and other identifiers

Tract name Pacific Margin (142pCu8514)
Included sites Central, Valley, Freedom
Site status prospect

Geographic location

Country Russian Federation
State or province Khabarovskiy kray
Geographic location 136.8961, 49.9165
Geologic map unit 136.8961, 49.9165
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range Late Jurassic–Cretaceous–Paleogene
Age reference geologic inference
Minerals arsenopyrite, bismutite, bornite, chalcocite, chalcopyrite, covellite, cuprite, galena, goethite, hematite, jarosite, limonite, magnetite, malachite, neotocite, pyrite, pyrrhotite, sericite, sphalerite
Associated rocks diorite, granodiorite, quartz diorite porphyrite stock, diorite porphyry and granodiorite porphyry dikes, sedimentary rocks
Tectonic setting mixed
Stratigraphic age Late Jurassic–Cretaceous–Paleogene

Commodity and development information

Development status Occurrence
Major commodities Cu
Minor commodities Au
Gold-Moly ratio -9999

Reference information

Comments Potential for open-pit minable porphyry-type Cu-Au mineralization; 14 target areas within district-scale 16 by 5 km intrusive corridor concealed beneath shallow cover of soil and vegetation; drill targets focused on geophysical and soil geochemical anomalies. As of 2013, 169 drill holes (>57,800 m) delineating near surface porphyry copper targets at 4 of 14 known areas (90% of intercepts >0.3% Cu Eq.). Near-surface zones ( within 0.5–50 m of the surface) of variable chalcocite enrichment grading into chalcopyrite-rich and into chalcopyrite-bornite-magnetite mineralization. Copper/gold porphyry mineralization style similar to Oyu Tolgoi in Mongolia; other high grade zones include: drill intercepts of 43.9 m at 1.23% Cu and 0.53 g/t Au, 12.8 m at 1.22% Cu and 0.08 g/t Au. Rich central zone drilled at 200 m spacing. Valley intercepts include: 99.4 m averaging 0.69% Cu and 0.40 g/t Au within a broader zone of 459.2 m at 0.47% Cu and 0.21 g/t Au; 56.0 m averaging 0.72% Cu and 0.32 g/t Au within a broader zone of 410.5 m at 0.43% Cu and 0.18 g/t Au; 134.5 m averaging 0.57% Cu and 0.28 g/t Au within a zone of 462.3 m averaging 0.41% Cu and 0.19 g/t Au.
Study area name Northeast Asia
References Fortress Minerals Corp. (2009); Fortress Minerals Corp. (2010); Andrei F. Chitalin (written commun., 2009); Eurasian Minerals Inc. (2012); Eurasian Minerals Inc. (2013)
Site reference Mihalasky, Ludington, Alexeiev, and others (2015)