Black Prospect, Willow Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Black Prospect | Prospect |
| Willow Creek Mining District | Mining District |
| Matanuska-Susitna Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 48' 25'' North , 149° 18' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fishhook | 4,679 (2011) | 7.8km |
| Buffalo Soapstone | 855 (2011) | 14.7km |
| Farm Loop | 1,028 (2011) | 20.5km |
| Tanaina | 8,197 (2011) | 21.0km |
| Lakes | 8,364 (2011) | 22.2km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Mat-Su Rock and Mineral Club | Palmer, Alaska | 25km |
Location: 2,000 ft southeast of the end of the unnamed, unimproved road that is parallel to Craigie Creek. Marked an adit symbol and labeled 'Black Prospect' on the Anchorage D-7 1:63,360-scale topographic map. Accurate within 400 ft.
Geology: Very little information available on this prospect. Presumably the occurrence is similar to others in the area - auriferous quartz veins cutting quartz diorite. Country rock is the Late Cretaceous Willow Creek Pluton, a zoned pluton: the outer part consists of hornblende quartz diorite and lesser hornblende tonalite; the core consists of hornblende-biotite granodiorite, and lesser hornblende-biotite quartz monzodiorite and biotite quartz monzonite.
Workings: Roehm (1937) reported that Sydney Black was developing a small property with two men employed on Craigie Creek, near the head.
Age: Late Cretaceous or younger; the mineralized host is the Late Cretaceous Willow Creek Pluton.
Commodities (Major) - Au ?
Development Status: None
Deposit Model: Low-sulfide Au-quartz veins ? (Cox and Singer, 1986; model 36a ? )
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold ? Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold ? | 1.AA.05 | Au |
| 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 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | AN028 |
|---|
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