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Gunn Creek Occurrence, Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Gunn Creek Occurrence | Occurrence |
| Chistochina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 9' 46'' North , 145° 29' 23'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: This placer occurrence is on Gunn Creek, about 1.2 miles north-northeast of Oxbow Lake. It is at an elevation of approximately 3,200 feet in the SE1/4SW1/4 of section 20, T. 20 S., R. 12 E., Fairbanks Meridian.
Geology: A pan-concentrate sample of stream gravels at this site contained chromite, gold, ilmenite, magnetite, olivine, scheelite, sphalerite, and zircon (Rose and Saunders, 1965, p. 15). The source of some of these minerals may be glacial till and possibly granite that has been reported in this vicinity (Rose and Saunders, 1965).
Age: Holocene.
Commodities (Major) - W; (Minor) - Au, Cr, Zn
Development Status: None
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a).
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
7 valid minerals.
Detailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ 'Fayalite-Forsterite Series' |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Native Gold Formula: Au |
| ⓘ Scheelite Formula: Ca(WO4) |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ Zircon Formula: Zr(SiO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| Unclassified | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Scheelite | Ca(WO4) |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Fayalite-Forsterite Series | |
| Mg | Magnesium | |
| Mg | ⓘ Fayalite-Forsterite Series | |
| Si | Silicon | |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Fayalite-Forsterite Series | |
| S | Sulfur | |
| S | ⓘ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Fayalite-Forsterite Series | |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | MH240 |
|---|
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