Old Glory Occurrence, Fairhaven Mining District, Northwest Arctic Borough, Alaska, USAi
Regional Level Types | |
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Old Glory Occurrence | Occurrence |
Fairhaven Mining District | Mining District |
Northwest Arctic Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
65° 51' 36'' North , 163° 6' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Deering | 127 (2017) | 29.4km |
Mindat Locality ID:
199233
Long-form identifier:
mindat:1:2:199233:8
GUID (UUID V4):
8a24568a-239a-49ca-b859-23749c49b654
Location: This occurrence is on the east side of Old Glory Creek valley, at an elevation of 400 feet. It is about 4,000 feet upstream of the mouth of Old Glory Creek. Old Glory Creek is a northeast-flowing tributary to Pinnell River. The mouth Old Glory Creek is about 1.5 miles upstream of the confluence of Pinnell and Inmachuk Rivers.
Geology: A ferruginous gossan in dolomitic marble is developed over a 110 by 500 foot area. The gossan is developed along a marble layer that now contains dolomite, quartz, pyrite (?), sericite, chlorite and minor fuchsite. A composite grab sample of ferruginuous marble collected over a distance of 115 feet contained 0.04 ounces/ton Au, 0.24 ounces/ton Ag, and 0.05 % Zn (Herried, 1966, Table 1). Most of the bedrock in the area is a metasedimentary schist and marble sequence of Lower Paleozoic age (Till and others, 1986).
Workings: Small, hand dug prospecting pits may be present.
Age: Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age. Some lode gold deposits on southern Seward Peninsula are mid-Cretaceous in age (see Midnight Mountain, BN047).
Alteration: The occurrence is oxidized and the dolomitic marble is replaced by sulfides and phyllosilicates.
Commodities (Major) - Au; (Minor) - Ag, Zn
Development Status: No
Deposit Model: Replacement in marble
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
4 valid minerals.
Detailed Mineral List:
ⓘ 'Chlorite Group' |
ⓘ Dolomite Formula: CaMg(CO3)2 |
ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
ⓘ Muscovite var. Fuchsite Formula: K(Al,Cr)3Si3O10(OH)2 |
ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
ⓘ Pyrite Formula: FeS2 |
ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
Group 9 - Silicates | |||
ⓘ | Muscovite var. Fuchsite | 9.EC.15 | K(Al,Cr)3Si3O10(OH)2 |
ⓘ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
Unclassified | |||
ⓘ | 'Chlorite Group' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
C | Carbon | |
C | ⓘ Dolomite | CaMg(CO3)2 |
O | Oxygen | |
O | ⓘ Dolomite | CaMg(CO3)2 |
O | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
O | ⓘ Quartz | SiO2 |
O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Mg | Magnesium | |
Mg | ⓘ Dolomite | CaMg(CO3)2 |
Al | Aluminium | |
Al | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | ⓘ Quartz | SiO2 |
Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
S | Sulfur | |
S | ⓘ Pyrite | FeS2 |
K | Potassium | |
K | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Ca | Calcium | |
Ca | ⓘ Dolomite | CaMg(CO3)2 |
Cr | Chromium | |
Cr | ⓘ Muscovite var. Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
Fe | Iron | |
Fe | ⓘ Pyrite | FeS2 |
Other Databases
Link to USGS - Alaska: | BN065 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Brooks-Seward DomainDomain
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