Mineral Resources
Online Spatial Data
National Mineral Resource Assessment 1998
Mineral assessment tracts in Seward (1:250,000 Alaska quadrangle in USGS Quadrangles)
[
Additional scientific data in this geographic area
]
AK-SC04: Besshi massive sulfide (24b)
(Late Cretaceous - Early Tertiary)
, covers 42 % of this area
90%
50%
10%
5%
1%
5
10
30
30
30
AK-SC06: Cyprus massive sulfide (24a)
(Early Tertiary)
, covers 42 % of this area
90%
50%
10%
5%
1%
1
2
8
8
8
AK-SC12: Low-sulfide Au-quartz veins, Chugach type (36a.1)
(Eocene - Oligocene)
, covers 62 % of this area
90%
50%
10%
5%
1%
80
600
800
800
800
AK-SC25: Placer Au (39a)
(Cenozoic)
, covers 14 % of this area
The number of undiscovered deposits in this tract was not estimated.