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Last Chance Mine, Washougal River, Washougal Mining District, Skamania County, Washington, USAi
| Regional Level Types | |
|---|---|
| Last Chance Mine | Mine |
| Washougal River | River |
| Washougal Mining District | Mining District |
| Skamania County | County |
| Washington | State |
| USA | Country |
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Latitude & Longitude (WGS84):
45° 42' 36'' North , 122° 12' 52'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fern Prairie | 1,884 (2011) | 16.5km |
| Venersborg | 3,745 (2011) | 17.8km |
| Washougal | 15,288 (2017) | 17.8km |
| Camas | 21,846 (2017) | 19.8km |
| North Bonneville | 971 (2017) | 20.6km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Mt Hood Rock Club | Gresham, Oregon | 29km |
| Millennium Diggers Club | Portland, Oregon | 41km |
| Oregon Agate & Mineral Society, Inc. | Portland, Oregon | 41km |
| Columbia-Willamette Faceters' Guild | Portland/West Linn, Oregon | 49km |
| Clackamette Mineral and Gem Club | Oregon City, Oregon | 50km |
A former Cu-V-Au-Ag-Pb-Zn mine located in the SW¼SE¼ of sec. 29, T3, R5E, on the Washougal River.
Mineralization is a sparsely mineralized shear zone in diorite.
Workings include underground openings comprised of a 475 foot deep shaft, a 930 foot long adit, and a caved adit.
Alteration: Locally Extensive Silicification And Argillization In Vein But Wall Rocks Only Weakly Propylitized
Tectonics: Cascade Volcanic Arc
Deposit: Quartz-filled fissure vein in quartz diorite phase of silver star pluton. Vein is 1-10 ft thick, much of which consists of 1-4 ft of massive quartz. Thicker parts of vein consist of several narrow quartz veins alternating with highly brecciated and silicified quartz diorite. Bornite, chalcocite, and chalocpyrite occur As disseminations and blebs in the vein quartz; chrysocolla, malachite, and azurite coat fracture surfaces. In a few places, chrysolcolla forms 1-6 in. Thick veins. Descloizite (lead vanadate) locally forms thin greenish-yellow coatings on vein surfaces. Maps of mine workings and location map available in moen (1977) ; info.src : 1 pub lit
Deposit type: Polymetallic veins
Development: Although considerable development work was undertaken in the early 1900's, no shipments of ore were made. Mine idle in 1977
Rock formation(s): Silver Star Pluton
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
12 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Bornite Formula: Cu5FeS4 References: |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 References: |
| ⓘ Descloizite ? Formula: PbZn(VO4)(OH) Description: No zinc |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Mottramite Formula: PbCu(VO4)(OH) |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyromorphite Formula: Pb5(PO4)3Cl References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ 'Wad' |
| ⓘ Wulfenite Formula: Pb(MoO4) References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Wulfenite | 7.GA.05 | Pb(MoO4) |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Descloizite ? | 8.BH.40 | PbZn(VO4)(OH) |
| ⓘ | Mottramite | 8.BH.40 | PbCu(VO4)(OH) |
| ⓘ | Pyromorphite | 8.BN.05 | Pb5(PO4)3Cl |
| Group 9 - Silicates | |||
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Unclassified | |||
| ⓘ | 'Wad' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | ⓘ Descloizite | PbZn(VO4)(OH) |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Mottramite | PbCu(VO4)(OH) |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | ⓘ Descloizite | PbZn(VO4)(OH) |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Mottramite | PbCu(VO4)(OH) |
| O | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Wulfenite | Pb(MoO4) |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | Silicon | |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | ⓘ Quartz | SiO2 |
| P | Phosphorus | |
| P | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| S | Sulfur | |
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Pyrite | FeS2 |
| Cl | Chlorine | |
| Cl | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| V | Vanadium | |
| V | ⓘ Descloizite | PbZn(VO4)(OH) |
| V | ⓘ Mottramite | PbCu(VO4)(OH) |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Mottramite | PbCu(VO4)(OH) |
| Zn | Zinc | |
| Zn | ⓘ Descloizite | PbZn(VO4)(OH) |
| Mo | Molybdenum | |
| Mo | ⓘ Wulfenite | Pb(MoO4) |
| Pb | Lead | |
| Pb | ⓘ Descloizite | PbZn(VO4)(OH) |
| Pb | ⓘ Mottramite | PbCu(VO4)(OH) |
| Pb | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| Pb | ⓘ Wulfenite | Pb(MoO4) |
Other Databases
| Link to USGS MRDS: | 10047849 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Cascade RangeMountain Range
North America PlateTectonic Plate
- Cascade ArcVolcanic Arc
- Siletzia DomainDomain
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Last Chance Mine, Washougal River, Washougal Mining District, Skamania County, Washington, USA