Metallogenesis and Tectonics of the Russian Far East, Alaska, and ...

Turbidite deposits
-. - (Early Cretaceous) r Ore body
[-1%zaF -
8 1
Fault
Cretaceous
Contact
/ / Shear zone
Basalt and desite
dike
p 1 Gra* p3Cphyr-y dlke
Figure 91. Tigrinoe Sn-W greisen deposit, Luzhkinsky metallogenic belt, Russian Southeast. Schematic geologic map and cross
section. Adapted from Korostelev and others (1 990).
Arsenyevskae Sn Silica-Sulfide Vein Deposit
The Arsenyevskoe Sn silicate-sulfide vein deposit (fig. 92) (Rub and others, 1974; Radkevich and others, 1980;
Gonevchuk and others, 1998), one of the larger Sn vein mines in the Luzhkinsky belt, consists of a series of parallel, steeply-
hpping quartz veins up to 1000 m along strike and 600 to 700 m down dip. The deposit is closely associated with moderate- to
steeply-dipping rhyolite dikes with K-Ar isotopic ages of 60 Ma (early Tertiary). The ore mineral assemblage is vertically zoned.
From the top downwards, the assemblages are: quartz-cassiterite, quartz-arsenopyrite-pyrrhotite, polymetallic, and arsenopyrite-
pyrrhotite. The rhyolite exhibits quartz-sericite alteration. Local miarolithic cavities are filled with cassiterite. The deposit is of
medium size. Sn content ranges from 0.1 lo 20-25% and averages 2-3% WO, content ranges from 0.1-0.5%, Pb and Zn from 1-
2%, Ag conlent is about few hundred ppm. The deposit has been mined since the 1970's.