McKinley Creek Falls Prospect, Haines, Alaska, USAi
| Regional Level Types | |
|---|---|
| McKinley Creek Falls Prospect | Prospect |
| Haines | City Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 22' 12'' North , 136° 13' 48'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mosquito Lake | 309 (2011) | 19.4km |
Location: This prospect is at an elevation of approximately 1,600 feet near the base of a falls in the steep-walled canyon of McKinley Creek . It is on the eastern edge of the NE1/4, section 12, T. 29 S., R. 54 E. of the Copper River Meridian. It is shown as location 20 by Still and others (1991).
Geology: The rocks in the area consist of slate with interbedded limestone that is cut by altered, tan dikes. Narrow, discontinuous quartz-sphalerite veins or silicified bands are in the dikes and, to a lesser extent, in the slate and limestone. Selected high-grade samples of quartz-sphalerite veins in dikes, contained up to 13.4% zinc and 8.9 ppm gold. A 2.5-foot-long chip sample across a limy silicified band in limy slate contained 24.8 ppm gold and 280 ppm zinc (Gilbert and others, 1991; Still and others, 1991). This prospect is similar to the Golden Eagle prospect (SK047). It occurs within a northwest-trending zone of quartz-sulfide veining in sediments and slates in the Skagway B-4 quadrangle that is described by Wright (1904 [B 225 and B 236]), Eakin (1918 and 1919), and MacKevett and others (1974) and is considered to be the source of placer gold in this area.
Age: Unknown, but probably Cretaceous or younger based on age of intrusives in area (MacKevett and others, 1974).
Alteration: Silica-carbonate units which are cut by or parallel the quartz-sulfide veins are probably altered mafic dikes (Still and others, 1991). Questionable mariposite may be due to alteration of mafic minerals (Bundtzen and Clautice, 1986).
Commodities (Major) - Au, Zn
Development Status: None
Deposit Model: There is little information but the brief description by Still and others (1991
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.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
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 | |||
| ⓘ | 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 | ⓘ Sphalerite | ZnS |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | SK046 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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