CC Barite Occurrence, Tok Mining District, Southeast Fairbanks Census Area, Alaska, USAi
Regional Level Types | |
---|---|
CC Barite Occurrence | Occurrence |
Tok Mining District | Mining District |
Southeast Fairbanks Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
63° 12' 49'' North , 144° 3' 32'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Mentasta Lake | 112 (2011) | 35.6km |
Mindat Locality ID:
196842
Long-form identifier:
mindat:1:2:196842:5
GUID (UUID V4):
3a753987-4d4b-4661-9dfa-721bf1b2f9b4
Unpublished data cited is available for viewing by contacting Grayd Resources Inc. in Vancouver, B. C., Canada (www.grayd.com), or Northern Associates Inc. in Fairbanks, Alaska.
Location: The CC Barite occurrence is located at an elevation of about 5,600 feet, 0.2 mile north-northwest of peak 6835 and 0.8 mile west-northwest of peak 6740 in the NW1/4 section 34, T. 17 N., R. 7 E., Copper River Meridian. The location is accurate.
Geology: The CC Barite occurrence is in an exposure of the Drum unit; bedded barite is enclosed in quartz-sericite schist that contains sparse disseminated galena and chalcopyrite. This is the only occurrence of bedded barite that has been identified in the Delta mineral belt; it may represent an exhalative precipitate that accumulated peripheral to or capping a sulfide system. It was found during field checking of airborne electromagnetic anomalies that trace a graphitic schist unit below this barite occurrence (S.S. Dashevsky, written communication, 2003). The Drum unit that hosts the CC Barite occurrence consists of white to pale gray-green, rusty weathering, quartz-sericite(-chlorite-pyrite) schist with minor gray to black carbonaceous phyllite and rare interbeds of chloritic phyllite. The schist commonly contains 1 to 5 percent quartz eyes but may contain more. The protoliths of the schist are about two-thirds of volcanic origin and one-third of sedimentary origin. The schist has a phyllitic parting in many places.
Workings: There has only been surface sampling and mapping at this occurrence (S.S. Dashevsky, written communication, 2003).
Age: The enclosing Drum unit has been dated at the Devonian-Mississippian boundary on the basis of one SHRIMP U-Pb zircon age of 359 +/- 6 Ma determined at the DD South prospect (MH325) (Dashevsky and others, 2003).
Commodities (Major) - Ba; (Minor) - Cu, Pb
Development Status: None
Deposit Model: Kuroko massive sulfide (Cox and Singer, 1986; model
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
6 valid minerals.
Detailed Mineral List:
β Baryte Formula: BaSO4 |
β Chalcopyrite Formula: CuFeS2 |
β 'Chlorite Group' |
β Galena Formula: PbS |
β Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
β Pyrite Formula: FeS2 |
β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Galena | 2.CD.10 | PbS |
β | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
β | Quartz | 4.DA.05 | SiO2 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
β | Baryte | 7.AD.35 | BaSO4 |
Group 9 - Silicates | |||
β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
Unclassified | |||
β | 'Chlorite Group' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
H | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
O | Oxygen | |
O | β Baryte | BaSO4 |
O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
O | β Quartz | SiO2 |
O | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Al | Aluminium | |
Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | β Quartz | SiO2 |
Si | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
S | Sulfur | |
S | β Baryte | BaSO4 |
S | β Chalcopyrite | CuFeS2 |
S | β Galena | PbS |
S | β Pyrite | FeS2 |
K | Potassium | |
K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
K | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Fe | Iron | |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Pyrite | FeS2 |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Ba | Barium | |
Ba | β Baryte | BaSO4 |
Pb | Lead | |
Pb | β Galena | PbS |
Other Databases
Link to USGS - Alaska: | MH348 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Windy-McKinley DomainDomain
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