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Le Blondeau Prospect, Haines, Alaska, USAi
| Regional Level Types | |
|---|---|
| Le Blondeau Prospect | Prospect |
| Haines | City Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 15' 36'' North , 136° 14' 23'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mosquito Lake | 309 (2011) | 31.1km |
Location: This prospect is about 1/4 by 1/2 mile in area. Its approximate center is at an elevation of about 1,500 feet on a sharp ridge just west of the terminus of the Le Blondeau Glacier and south of the Tsirku River. It is on the the south-central edge of the section 13, T. 30 S., R. 54 E. of the Copper River Meridian. It is shown as location 26 on sheet 1 of Still and others (1991) and and locations F70 to F72 on sheet 1 of Gilbert and others (1991).
Geology: According to Still and others (1991), this prospect consists of irregular quartz veins up to 0.8 feet wide and 50 feet long that are exposed near the face of the retreating Le Blondeau Glacier. The veins cut bedding and are hosted in dikes and metachert. Vein samples contain up to 1.561 ppm gold, 2.4 ppm silver, and 251 ppm cobalt . The veins are probably of Cretaceous age or younger based on the age of a nearby quartz diorite to granodiorite intrusion (MacKevett and others, 1974; Gilbert, 1988). Still and others (1991) also note that 'The snout of this (Le Blondeau) glacier is the site of some limited placer activity, including the staking of placer claims' but there is no record of any significant production.
Age: The age is unknown but is probably Cretaceous or younger based on the age of a nearby intrusion (MacKevett and others, 1974; Gilbert, 1988).
Commodities (Major) - Ag, Au; (Minor) - Co
Development Status: None
Deposit Model: There is little information but Still and others (1991) refer to polymetallic
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| 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 | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
Other Databases
| Link to USGS - Alaska: | SK050 |
|---|
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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