Spik; Hanson Prospect, McLean Arm, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
54° 47' 5'' North , 132° 5' 2'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: The Spik prospect reportedly is about 2 miles south of the head of McLean Arm in the SW1/4 section 2, T. 82 S., R. 89 E (Cobb, 1978). The coordinates are at that location, but the prospect has hardly been mentioned in a primary reference since 1918, and it may be a mile or more from there, or possibly is one of several prospects one or two miles to the east (DE037 to DE039).
Geology: This prospect was originally identified as the Hanson copper prospect (Smith, 1914). Chapin (1918) called it the Spik prospect and described the deposit as masses of bornite, chalcopyrite, and pyrrhotite in greenstone that has been intruded by granite. ('Greenstone' as used in many early reports is often fine-grained diorite or granodiorite.) The prospect was explored by a few open cuts and a short adit. Buddington and Chapin's (1929) description is probably based on Chapin's earlier report. Gehrels (1992) has mapped the rocks in the area as Silurian or Ordovician syenite and granite.
Workings: Only a few open cuts and a short adit.
Age: Deposit is in syenite and granite of Silurian or Ordovician age.
Commodities (Major) - Cu
Development Status: None
Deposit Model: Bornite, chalcopyrite, and pyrrhotite in greenstone.
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:
| ⓘ Bornite Formula: Cu5FeS4 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | DE036 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
- Queen Charlotte basinBasin
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