An antimony prospect located 1/2 mile east of Mud Lake and 10 miles west of Oroville. It worked a vein along a contact between quartzite and schist. It features a pit 5' square and 4' deep.

Deposit: Quartz vein

Development: Pit (probably a shaft at one time).

Geology: Carbonaceous schist laced with limonite-stained qtz stringers. The schist is fault contact with qtzite. About 2 ft south of this contact is a fault mineralized with qtz (about 4 in thick). A polished section of the quartz shows that it and scattered subhedral crystals of arsenopyrite were deposited first; later boulangerite was introduced, replacing the earlier minerals along fractures.

Ore(s): Vein Follows Fault

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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

ⓘ Antimony

ⓘ Arsenic

ⓘ Lead

Mineral List

ⓘ Arsenopyrite

ⓘ Boulangerite

ⓘ Quartz

3 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

ⓘ Quartzite

Detailed Mineral List:

ⓘ Arsenopyrite

Formula: FeAsS

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.p.60

ⓘ Boulangerite

Formula: Pb₅Sb₄S₁₁

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.p.60

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Quartz

Formula: SiO₂

References:

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.p.60

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Arsenopyrite	2.EB.20	FeAsS
ⓘ	Boulangerite	2.HC.15	Pb₅Sb₄S₁₁
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	ⓘ Arsenopyrite	FeAsS
S	ⓘ Boulangerite	Pb₅Sb₄S₁₁
Fe	Iron
Fe	ⓘ Arsenopyrite	FeAsS
As	Arsenic
As	ⓘ Arsenopyrite	FeAsS
Sb	Antimony
Sb	ⓘ Boulangerite	Pb₅Sb₄S₁₁
Pb	Lead
Pb	ⓘ Boulangerite	Pb₅Sb₄S₁₁

Other Databases

Link to USGS MRDS:	10092598

Other Regions, Features and Areas containing this locality

North AmericaContinent

Columbia MountainsMountain Range

North America PlateTectonic Plate

Okanogan DomainDomain
QuesnelliaVolcanic Arc

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References

Purdy, C. Phillips Jnr (1951) Antimony Occurrences of Washington, Bulletin No.39, Division of Mines and Geology, Department of Conservation and Development. 1-188

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.

Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.

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