Mt. Ogden Prospect, Juneau Mining District, Juneau, Alaska, USAi
Regional Level Types | |
---|---|
Mt. Ogden Prospect | Prospect |
Juneau Mining District | Mining District |
Juneau | City Borough |
Alaska | State |
USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
58° 26' 14'' North , 133° 23' 49'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
199033
Long-form identifier:
mindat:1:2:199033:4
GUID (UUID V4):
1d7b37bc-588d-4d12-a226-3b2225d0ae6c
Location: This prospect is on the west flank of Mount Ogden near the international boundary. It is just under about the center of the north side of section 5, T.40 S., R.73 E. of the Copper River Meridian. This is location T006 of Wells and others (1986). The location is accurate within 1/2 mile.
Geology: The Mount Ogden prospect is in a diorite porphyry stock that covers an area about 4,500 feet by 6,900 feet in size. The stock is marked by sericitic, potassic and chloritic alteration. Molybdenite occurs as sparsely disseminated crystals in the porphyry, in miarolitic cavities in the porphyry, along fractures, in quartz breccia bodies, and in quartz veins. Minor scheelite, fluorite, rhodochrosite, arsenopyrite, sphalerite, galena and gold are present (Wells and others, 1986). Most of this deposit is located on the Canadian side of the international boundary, where it is known as the Nan prospect (Miller and others, 1997). The U.S. Bureau of Mines describe the Mount Ogden prospect as an alaskite intrusive with molybdenite in stockworks, veins, and along fractures (Clough, 1990). Investigations on the Canadian portion of the deposit describe molybdenite clots and fracture coatings that are restricted to aplite dikes and hydrothermally altered felsite (Miller and others, 1997). U-Pb dates from a quartz monzonite porphyry on Mt. Eriksen in British Columbia give an age of 53.5 Ma. A K/Ar date on a biotite-rich, molybdenite-bearing granite dike at the nearby Boundary Creek 2, molybdenum occurrence (TR003) is 59.7 Ma (Miller and others, 1997).
Age: U-Pb dates from a quartz monzonite porphyry on Mt. Eriksen in British Columbia give an age of 53.5 Ma. A K/Ar date on a biotite-rich, molybdenite-bearing granite dike at the nearby Boundary Creek 2, molybdenum occurrence (TR003) is 59.7 Ma (Miller and others, 1997).
Alteration: Sericitic, potassic, and chloritic alteration is present (Wells and others, 1986).
Commodities (Major) - Cu, Mo; (Minor) - Au, Pb, W, Zn
Development Status: No
Deposit Model: Porphyry Mo (Cox and Singer, 1986; model 21b)
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
9 valid minerals.
Detailed Mineral List:
β Arsenopyrite Formula: FeAsS |
β Fluorite Formula: CaF2 |
β Galena Formula: PbS |
β Gold Formula: Au |
β Molybdenite Formula: MoS2 |
β Quartz Formula: SiO2 |
β Rhodochrosite Formula: MnCO3 |
β Scheelite Formula: Ca(WO4) |
β Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Gold | 1.AA.05 | Au |
Group 2 - Sulphides and Sulfosalts | |||
β | Sphalerite | 2.CB.05a | ZnS |
β | Galena | 2.CD.10 | PbS |
β | Molybdenite | 2.EA.30 | MoS2 |
β | Arsenopyrite | 2.EB.20 | FeAsS |
Group 3 - Halides | |||
β | Fluorite | 3.AB.25 | CaF2 |
Group 4 - Oxides and Hydroxides | |||
β | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
β | Rhodochrosite | 5.AB.05 | MnCO3 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
β | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
C | Carbon | |
---|---|---|
C | β Rhodochrosite | MnCO3 |
O | Oxygen | |
O | β Quartz | SiO2 |
O | β Rhodochrosite | MnCO3 |
O | β Scheelite | Ca(WO4) |
F | Fluorine | |
F | β Fluorite | CaF2 |
Si | Silicon | |
Si | β Quartz | SiO2 |
S | Sulfur | |
S | β Arsenopyrite | FeAsS |
S | β Galena | PbS |
S | β Molybdenite | MoS2 |
S | β Sphalerite | ZnS |
Ca | Calcium | |
Ca | β Fluorite | CaF2 |
Ca | β Scheelite | Ca(WO4) |
Mn | Manganese | |
Mn | β Rhodochrosite | MnCO3 |
Fe | Iron | |
Fe | β Arsenopyrite | FeAsS |
Zn | Zinc | |
Zn | β Sphalerite | ZnS |
As | Arsenic | |
As | β Arsenopyrite | FeAsS |
Mo | Molybdenum | |
Mo | β Molybdenite | MoS2 |
W | Tungsten | |
W | β Scheelite | Ca(WO4) |
Au | Gold | |
Au | β Gold | Au |
Pb | Lead | |
Pb | β Galena | PbS |
Other Databases
Link to USGS - Alaska: | TR006 |
---|
Other Regions, Features and Areas containing this locality
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.