Mineral assessment tracts in Petersburg (1:250,000 Alaska quadrangle in USGS Quadrangles)

[Additional scientific data in this geographic area]

AK-SE01: Besshi massive sulfide (24b) (Paleozoic) , covers 1 % of this area
90%50%10%5%1%
00001
AK-SE02: Creede epithermal veins (25b) (Tertiary) , covers 5 % of this area
90%50%10%5%1%
00012
AK-SE03: Low-sulfide Au-quartz veins (36a) (Cretaceous - Tertiary) , covers 3 % of this area
90%50%10%5%1%
15131417
AK-SE05: Sierran Kuroko mass. sulf. (28a.1) (Late Triassic) , covers 13 % of this area
90%50%10%5%1%
137913
AK-SE06: Mississippi Valley Type (SE Missouri Pb-Zn) (32a) (Paleozoic - Mesozoic) , covers < 0.1 % of this area
90%50%10%5%1%
00001
AK-SE07: Porphyry Cu (17) (Tertiary) , covers 3 % of this area
90%50%10%5%1%
00247
AK-SE09: Cu Skarn (18b) (Cretaceous - Tertiary) , covers 3 % of this area
90%50%10%5%1%
14678
AK-SE11: Cyprus massive sulfide (24a) (Triassic) , covers 0.2 % of this area
90%50%10%5%1%
00002
AK-SE13: Polymetallic vein (22c) (Cretaceous - Tertiary) , covers 15 % of this area
90%50%10%5%1%
59151721
AK-SE18: Alaskan PGE (9) (Paleozoic - Cretaceous) , covers 0.4 % of this area
90%50%10%5%1%
00012
AK-SE19: Porphyry Cu, skarn related (18a) (Tertiary) , covers 3 % of this area
90%50%10%5%1%
00013
AK-SE20: Porphyry Cu-Mo (21a) (Tertiary) , covers 3 % of this area
90%50%10%5%1%
00145