ID | Data type | Description |
---|---|---|
Southeastern Alaska | M-D | Southeastern Alaska 12364 line km with spacing 9.60 km over parts of AK |
Sitka '78 | M-D | Sitka '78 5536 line km with spacing 0.80 km over parts of AK |
Sitka | M/R-D | Sitka 579 line km with spacing 9.60 km over parts of AK |
Tract | Deposit Type | Mineralization age |
---|---|---|
AK-SE03 | Low-sulfide Au-quartz veins | |
AK-SE10 | Basaltic Cu | |
AK-SE11 | Cyprus massive sulfide |
Domain | Crust type | Region |
---|---|---|
Chugach | Accretionary wedge | Alaska |
Lab ID | Sample medium | Description |
---|---|---|
CCX092 | rock | |
CCX093 | rock | |
CCX460 | sediment | |
CCX662 | concentrate | panned only concentrate |
EFH173 | concentrate | panned C3 fraction |
LEQ064 | sediment | |
LEQ113 | rock | |
LEQ114 | rock | |
LEQ115 | rock | |
LEQ116 | rock | |
LEQ117 | rock | |
LEQ118 | rock | |
LEQ119 | rock | |
LEQ121 | rock | |
LER187 | rock | sedimentary siltstone |
LER188 | rock | sedimentary siltstone |
Sample ID | Rock type | Rock name |
---|---|---|
CCX092 | unspecified | |
CCX093 | unspecified | |
LEQ113 | unspecified | |
LEQ114 | unspecified | |
LEQ115 | unspecified | |
LEQ116 | unspecified | |
LEQ117 | unspecified | |
LEQ118 | unspecified | |
LEQ119 | unspecified | |
LEQ121 | unspecified | |
LER187 | sedimentary | siltstone |
LER188 | sedimentary | siltstone |
Site name | Development | Commodities |
---|---|---|
Jumbo Gold Mine | Past Producer | AU PB ZN |
Alaska Chichogof Mining Co. Gold Mine | Past Producer | AU AG |
Alaska Chichagof | Past Producer | AU AG |
Site | Status | Commodities |
---|---|---|
Alaska Chichagof | Undetermined | Ag;Au |
Jumbo; Gold Reef No. 1; Minnesot... | Undetermined | Au |
Sample ID | Sample source | Sample notes |
---|---|---|
LEQ064 | stream/river | precious metal mineralization;; Alaska Chichagof Mine, collected by USBM;; stream |
Tract name | Deposit type | Geology |
---|---|---|
Late Continental Arc | porphyry copper | Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Oligocene-Pliocene) |
Intermontane Island-Arc | porphyry copper | Porphyry Cu systems associated with pre-accretionary Triassic and Jurassic calc-alkalic island arcs that formed offshore of western North America |
Intermontane Island-Arc Cu-Au | porphyry copper | Triassic and Jurassic alkalic igneous rocks of accreted island arcs that formed offshore of western North America |
Insular Mixed Island- and Continental Arc | porphyry copper | Calc-alkalic igneous rocks of accreted Jurassic island-arc terranes |
Cordilleran Continental Arc | porphyry copper | Porphyry Cu systems associated with predominantly calc-alkalic igneous rocks of post-accretionary continental magmatic arcs (Jurassic-Eocene) |
Southeast Alaska Tertiary | porphyry copper | Tertiary subduction and postsubduction calc-alkalic plutons of southeast Alaska |
Alaska Peninsula and Aleutian Islands | porphyry copper | Tertiary felsic to intermediate composition intrusions of the Alaska Peninsula and Aleutian Islands |
Pacific Margin | porphyry copper | Cretaceous through middle Tertiary volcanic and intrusive rocks representing a series of continental- and island-arc systems accreted and superimposed onto the paleomargin of northeast Asia. |