Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Mount Vernon Mine, Skagit County, Washington, USAi
Regional Level Types
Mount Vernon MineMine
Skagit CountyCounty
WashingtonState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
09773400017272042612920.jpg
Dolomite

Mount Vernon Mine, Skagit County, Washington, USA
09773400017272042612920.jpg
Dolomite

Mount Vernon Mine, Skagit County, Washington, USA
09773400017272042612920.jpg
Dolomite

Mount Vernon Mine, Skagit County, Washington, USA
Latitude & Longitude (WGS84):
48° 22' 8'' North , 122° 17' 29'' West
Latitude & Longitude (decimal):
48.36889,-122.29139
GeoHash:
G#: c2951jq1h
GRN:
N33W59
Type:
Mine
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Big Lake1,835 (2011)5.3km
Mount Vernon34,053 (2017)6.6km
Lake McMurray192 (2011)7.5km
Lake Ketchum930 (2011)10.1km
Clear Lake1,002 (2006)11.4km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
North Puget Sound Facetors GuildMount Vernon, Washington7km
Skagit Rock and Gem ClubMt. Vernon, Washington8km
Marysville Rock & Gem Club, Inc.Marysville, Washington36km
Everett Rock & Gem ClubEverett, Washington44km
Mount Baker Rock And Gem ClubBellingham, Washington46km
Mindat Locality ID:
17437
Long-form identifier:
mindat:1:2:17437:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
Devils Mountain Mine; Pacific Mine


A gold-nickel mine on Devils Mountain neat Mount Vernon. The geology consisted mainly of quartz and nickeliferous ankerite along a fault zone. It was developed by 300' of adits and 6375' of drilling. A resource of 15,000,000 tons of rock averaging 0.02 oz/ton gold and 0.2% nickel was defined.

A small amount of ore was produced in test shipments.
Geology: Fault zone between serpentine and sandstone is made up of silica-carbonate rock with central core of sulfide bearing breccia. Silica-carbonate rock portion is 2 mt. Long and 100 to 400 ft. Wide. Sulfide breccia is in small lenses along core.

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.


Mineral List


11 valid minerals.

Detailed Mineral List:

ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Ankerite var. Nickel-bearing Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Calcite
Formula: CaCO3
ⓘ 'Chlorite Group'
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Chrysotile
Formula: Mg3(Si2O5)(OH)4
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Gold
Formula: Au
ⓘ 'Limonite'
ⓘ Magnesite
Formula: MgCO3
ⓘ Marcasite
Formula: FeS2
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Description: May be from the altered latite in the area that is in contact with the altered peridotite.
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrite var. Bravoite
Formula: (Fe,Ni)S2
Habit: microscopic impurities
Description: in pyrite and marcasite
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘPyrite
var. Bravoite		2.EB.05a(Fe,Ni)S2
ⓘ2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘOpal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘMagnesite5.AB.05MgCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘAnkerite
var. Nickel-bearing Ankerite		5.AB.10Ca(Fe2+,Mg)(CO3)2
Group 9 - Silicates
ⓘChrysotile9.00.Mg3(Si2O5)(OH)4
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Limonite'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ ChrysotileMg3(Si2O5)(OH)4
Hⓘ OpalSiO2 · nH2O
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MagnesiteMgCO3
Cⓘ Ankerite var. Nickel-bearing AnkeriteCa(Fe2+,Mg)(CO3)2
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ CalciteCaCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ ChrysotileMg3(Si2O5)(OH)4
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ DolomiteCaMg(CO3)2
Oⓘ MagnesiteMgCO3
Oⓘ OpalSiO2 · nH2O
Oⓘ QuartzSiO2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ Ankerite var. Nickel-bearing AnkeriteCa(Fe2+,Mg)(CO3)2
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ ChrysotileMg3(Si2O5)(OH)4
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ MagnesiteMgCO3
Mgⓘ Ankerite var. Nickel-bearing AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ ChrysotileMg3(Si2O5)(OH)4
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ Pyrite var. Bravoite(Fe,Ni)S2
Sⓘ MarcasiteFeS2
Sⓘ PyriteFeS2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ Ankerite var. Nickel-bearing AnkeriteCa(Fe2+,Mg)(CO3)2
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ Pyrite var. Bravoite(Fe,Ni)S2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ Ankerite var. Nickel-bearing AnkeriteCa(Fe2+,Mg)(CO3)2
NiNickel
Niⓘ Pyrite var. Bravoite(Fe,Ni)S2
AuGold
Auⓘ GoldAu

Other Databases

Link to USGS MRDS:10132114

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

S.W. Hobbs and W.T. Pecora (1941) Strategic minerals investigations, 1941, short papers and preliminary reports. Nickel-gold deposit near Mount Vernon, Skagit County, Washington. USGS Bulletin 931-D
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.
Quick NavTopCommoditiesMineral ListOther DatabasesOther RegionsReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 22, 2026 01:58:04 Page updated: August 5, 2025 16:02:01
Go to top of page