Property probably originally staked in early 1920's. The Crest(?) claims staked in 1978(?) are not on the old Crest property (Elliott and Koch, 1981, loc. 72).
Location: The Crest prospect is in Section 35 at an elevation of about 1150 feet on a west-facing mountainside overlooking Salmon River about 0.5 mile below its confluence with Texas Creek. It is about 0.5 mile southeast of the ruins at Ninemile (Elliott and Koch, 1981, p. 18, loc. 72). The location is accurate within about 0.2 mile. Also see Additional Comments field, below.
Geology: The country rock in the area of the Crest prospect is the Triassic Texas Creek Granodiorite, which underlies and locally intrudes pelitic metasedimentary and subordinate andesitic (greenstone) strata of the Jurassic or older Mesozoic Hazelton Group (Smith, 1977; Koch, 1996). The deposit (Buddington, 1929, p. 81-82) is in a thin but persistent fissure zone in granodiorite that has been traced for about 350 feet in opencuts and strippings. The zone contains quartz veins or stringers as much as 3 feet in aggregate thickness that contain shoots of relatively massive galena, accompanied by pyrite and a little chalcopyrite. The granodiorite country rock adjacent to the veins is impregnated with pyrite, which also occurs with galena on fracture surfaces. Some small quartz stringers assayed as much as 5 oz Au per ton, but most are much leaner.
Workings: Prospect was explored in 1920's by open cuts and stripping. Some sulfide-bearing quartz stringers assayed as high as 5 oz Au per ton, but most are much leaner.
Alteration: Granodiorite country rock adjacent to veins is impregnated with sulfides.

Commodities (Major) - Au, Cu, Pb
Development Status: None
Deposit Model: Polymetallic veins

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Copper

ⓘ Gold

ⓘ Lead

Mineral List

4 valid minerals.

Detailed Mineral List:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

ⓘ Galena

Formula: PbS

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

ⓘ Pyrite

Formula: FeS₂

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

ⓘ Quartz

Formula: SiO₂

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Galena	2.CD.10	PbS
ⓘ	Pyrite	2.EB.05a	FeS₂
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
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Galena	PbS
S	ⓘ Pyrite	FeS₂
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Pyrite	FeS₂
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Pb	Lead
Pb	ⓘ Galena	PbS

Other Databases

Link to USGS - Alaska:	BC072

Other Regions, Features and Areas containing this locality

North AmericaContinent

Coast MountainsMountain Range

North America PlateTectonic Plate

StikiniaVolcanic Arc
Taku DomainDomain

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References

Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p. Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360. Koch, R.D., 1996 [In press), Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report, 1 sheet, scale 1:250,000. Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p., 1 plate.

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