Guyot Beach Occurrence (Icy Bay), Yakataga Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Guyot Beach Occurrence (Icy Bay) | Occurrence |
| Yakataga Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 57' 25'' North , 141° 39' 28'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
197863
Long-form identifier:
mindat:1:2:197863:9
GUID (UUID V4):
8b00c9f3-7222-4288-a02f-7bdf7ca024b2
Location: This occurrence is on the north shoreline of Icy Bay, 1.2 miles northeast of Icy Cape. It is in section 4, T. 23 S., R. 22 E., of the Copper River Meridian. It is locality 1 of Cobb (1972 [MF 411]; 1979 [OF 79-1246]).
Geology: Thomas and Berryhill (1962) collected reconnaissance beach samples (IB004, IB006-009) 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 of titanium oxide per cubic yard. The non-magnetic fraction in these samples contained as much as 6.4 pounds, but mostly less than 2 pounds, of titanium oxide per cubic yard. An auger sample of beach material collected by Thomas and Berryhill (1962) at this location contained 0.4 pound of titanium oxide per cubic yard in the magnetic fraction (which also contained 1.5 pounds of iron per cubic yard) and 0.4 pound of titanium oxide per cubic yard in the non-magnetic fraction. It also contained a trace of gold.
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:
| β Chromite Formula: Fe2+Cr3+2O4 |
| β 'Garnet Group' Formula: X3Z2(SiO4)3 |
| β Gold Formula: Au |
| β Ilmenite Formula: Fe2+TiO3 |
| β Magnetite Formula: Fe2+Fe3+2O4 |
| β Rutile Formula: TiO2 |
| β Titanite Formula: CaTi(SiO4)O |
| β Xenotime-(Y) Formula: Y(PO4) |
| β Zircon Formula: Zr(SiO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| β | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| β | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| β | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| β | Rutile | 4.DB.05 | TiO2 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| β | Xenotime-(Y) | 8.AD.35 | Y(PO4) |
| Group 9 - Silicates | |||
| β | Zircon | 9.AD.30 | Zr(SiO4) |
| β | Titanite | 9.AG.15 | CaTi(SiO4)O |
| Unclassified | |||
| β | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | β Chromite | Fe2+Cr23+O4 |
| O | β Ilmenite | Fe2+TiO3 |
| O | β Magnetite | Fe2+Fe23+O4 |
| O | β Rutile | TiO2 |
| O | β Titanite | CaTi(SiO4)O |
| O | β Xenotime-(Y) | Y(PO4) |
| O | β Zircon | Zr(SiO4) |
| O | β Garnet Group | X3Z2(SiO4)3 |
| Si | Silicon | |
| Si | β Titanite | CaTi(SiO4)O |
| Si | β Zircon | Zr(SiO4) |
| Si | β Garnet Group | X3Z2(SiO4)3 |
| P | Phosphorus | |
| P | β Xenotime-(Y) | Y(PO4) |
| Ca | Calcium | |
| Ca | β Titanite | CaTi(SiO4)O |
| Ti | Titanium | |
| Ti | β Ilmenite | Fe2+TiO3 |
| Ti | β Rutile | TiO2 |
| Ti | β Titanite | CaTi(SiO4)O |
| Cr | Chromium | |
| Cr | β Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | β Chromite | Fe2+Cr23+O4 |
| Fe | β Ilmenite | Fe2+TiO3 |
| Fe | β Magnetite | Fe2+Fe23+O4 |
| Y | Yttrium | |
| Y | β Xenotime-(Y) | Y(PO4) |
| Zr | Zirconium | |
| Zr | β Zircon | Zr(SiO4) |
| Au | Gold | |
| Au | β Gold | Au |
Other Databases
| Link to USGS - Alaska: | IB010 |
|---|
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References
