Crystal Creek Occurrence, Yakataga Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Crystal Creek Occurrence | Occurrence |
| Yakataga Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 58' 41'' North , 141° 40' 4'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: This occurrence is along the logging road west of Icy Bay. It is 1 mile northwest of the Icy Bay landing strip, near where the logging road parallels Crystal Creek and crosses the west boundary of section 28, T. 22 S., R. 22 E., of the Copper River Meridian. It is sample locality 152 of Foley and others (1995). The map location is probably accurate to within one-half mile.
Geology: Foley and others (1995) collected one sample at this location. It is probably from a raised beach on a Holocene marine terrace. Spiral concentrate from this sample contained less than 0.028 gram of gold per ton, 0.52 percent titanium, and 230 ppm zirconium. Thomas and Berryhill (1962) collected reconnaissance beach samples (IB004, IB006-010) from the Icy Bay area that contained trace to small amounts of magnetite, ilmenite, chromite, zircon, rutile, garnet, sphene, xenotime, and gold. The magnetic fraction of their samples contained as much as 6.2 pounds of iron and 1 pound titanium oxide per cubic yard. The non-magnetic fraction contained as much as 6.4 pounds, but mostly less than 2 pounds, of titanium oxide per cubic yard.
Workings: Reconnaissance characterization of beach samples has been completed in this area.
Age: Holocene.
Commodities (Major) - Au, Ti; (Minor) - Cr
Development Status: None
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a - beach)
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
8 valid minerals.
Detailed Mineral List:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Native Gold Formula: Au |
| ⓘ Rutile Formula: TiO2 |
| ⓘ Titanite Formula: CaTi(SiO4)O |
| ⓘ Xenotime-(Y) Formula: Y(PO4) |
| ⓘ Zircon Formula: Zr(SiO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| 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 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Xenotime-(Y) | 8.AD.35 | Y(PO4) |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Titanite | 9.AG.15 | CaTi(SiO4)O |
| Unclassified | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Titanite | CaTi(SiO4)O |
| O | ⓘ Xenotime-(Y) | Y(PO4) |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Titanite | CaTi(SiO4)O |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| P | Phosphorus | |
| P | ⓘ Xenotime-(Y) | Y(PO4) |
| Ca | Calcium | |
| Ca | ⓘ Titanite | CaTi(SiO4)O |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Rutile | TiO2 |
| Ti | ⓘ Titanite | CaTi(SiO4)O |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Y | Yttrium | |
| Y | ⓘ Xenotime-(Y) | Y(PO4) |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | IB012 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America Plate
- Yakutat-Malaspina DomainDomain
- YakutatOphiolite Complex
Pacific PlateTectonic Plate
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