Dakavak Lake Occurrence, Bristol Bay Mining District, Kodiak Island Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Dakavak Lake Occurrence | Occurrence |
| Bristol Bay Mining District | Mining District |
| Kodiak Island Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
58° 9' 56'' North , 154° 43' 29'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
This occurrence is in the Katmai National Monument.
Location: This occurrence is about 2 miles north of the northern tip of Dakavak Lake in the SE1/4 sec. 19, T. 23 S., R. 33 W., of the Seward Meridian. Church, Riehle, and Goldfarb (1993) collected samples along a traverse about a mile long. The location is accurate.
Geology: This occurrence is in hydrothermally altered, Upper Tertiary volcanic rocks, and consists of quartz veins with finely disseminated pyrite. The volcanic rocks are moderately to intensely altered to propylitic, argillic, phyllic, and potassic mineral assemblages. Church, Riehle, and Goldfarb (1993) collected samples along a traverse about a mile long. The samples contained up to 5 parts per million (ppm) gold, but most values are about 200 parts per billion. They also contain up to 10 ppm molybdenum, 0.5 ppm silver, 800 ppm arsenic, and 100 ppm zinc. The occurrence might reflect a concealed low-F, porphyry Mo type deposit. The occurrence is one of several similar sites along a northwest-striking, regional shear zone (Church, Riehle, and Goldfarb, 1993).
Workings: Apparently only sampling by government geologists.
Age: Late Tertiary or younger based on the age of the volcanic host rocks.
Alteration: The volcanic rocks are moderately to intensely altered to propylitic, argillic, phyllic, and potassic mineral assemblages.
Commodities (Major) - Au; (Minor) - Ag, As, Mo, Zn
Development Status: None
Deposit Model: Polymetallic vein, epithermal gold vein (Cox and Singer, 1986; model 22c, 25).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
3 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | MK023 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Peninsular-Talkeetna DomainDomain
- Peninsular TerraneVolcanic Arc
USA
- Alaska
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