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

Johnsburg Mine, Cascade River, Cascade Mining District, Skagit County, Washington, USAi
Regional Level Types
Johnsburg MineMine
Cascade RiverRiver
Cascade Mining DistrictMining District
Skagit CountyCounty
WashingtonState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
48° 28' 49'' North , 121° 6' 6'' West
Latitude & Longitude (decimal):
48.48028,-121.10167
GeoHash:
G#: c29gu386n
GRN:
N33W58
Type:
Mine
Köppen climate type:
Dsc : Dry-summer subarctic climate
Nearest Settlements:
PlacePopulationDistance
Marblemount203 (2011)26.2km
Rockport109 (2006)36.5km
Darrington1,376 (2017)44.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Darrington Rock & Gem ClubDarrington, Washington45km
Mindat Locality ID:
17559
Long-form identifier:
mindat:1:2:17559:2
GUID (UUID V4):
0


Cascade Pass area

References:
*Cannon, B. (1975): Minerals of Washington, p.44,54,68
Deposit: Rec 050 cols 50-53 tuneling done prior 1951 rec 070 cols 23-72 no data rec 080 cols 35-52 exposed rec 120 col 58 more exploration reqd estimated lead-time to produce ore is 3 years

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


13 valid minerals.

Detailed Mineral List:

ⓘ Anglesite
Formula: PbSO4
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Calcite
Formula: CaCO3
ⓘ Cerussite
Formula: PbCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Galena
Formula: PbS
ⓘ Kyanite
Formula: Al2(SiO4)O
ⓘ Linarite
Formula: PbCu(SO4)(OH)2
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Mimetite
Formula: Pb5(AsO4)3Cl
ⓘ Quartz
Formula: SiO2
ⓘ Sphalerite
Formula: ZnS
ⓘ Staurolite
Formula: Fe2+2Al9Si4O23(OH)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘCerussite5.AB.15PbCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAnglesite7.AD.35PbSO4
ⓘLinarite7.BC.65PbCu(SO4)(OH)2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘMimetite8.BN.05Pb5(AsO4)3Cl
Group 9 - Silicates
ⓘKyanite9.AF.15Al2(SiO4)O
ⓘStaurolite9.AF.30Fe2+2Al9Si4O23(OH)

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ LinaritePbCu(SO4)(OH)2
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ StauroliteFe22+Al9Si4O23(OH)
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ CerussitePbCO3
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AnglesitePbSO4
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CalciteCaCO3
Oⓘ CerussitePbCO3
Oⓘ KyaniteAl2(SiO4)O
Oⓘ LinaritePbCu(SO4)(OH)2
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MimetitePb5(AsO4)3Cl
Oⓘ QuartzSiO2
Oⓘ StauroliteFe22+Al9Si4O23(OH)
AlAluminium
Alⓘ KyaniteAl2(SiO4)O
Alⓘ StauroliteFe22+Al9Si4O23(OH)
SiSilicon
Siⓘ KyaniteAl2(SiO4)O
Siⓘ QuartzSiO2
Siⓘ StauroliteFe22+Al9Si4O23(OH)
SSulfur
Sⓘ AnglesitePbSO4
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ LinaritePbCu(SO4)(OH)2
Sⓘ SphaleriteZnS
ClChlorine
Clⓘ MimetitePb5(AsO4)3Cl
CaCalcium
Caⓘ CalciteCaCO3
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ StauroliteFe22+Al9Si4O23(OH)
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ LinaritePbCu(SO4)(OH)2
Cuⓘ MalachiteCu2(CO3)(OH)2
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ MimetitePb5(AsO4)3Cl
PbLead
Pbⓘ AnglesitePbSO4
Pbⓘ CerussitePbCO3
Pbⓘ GalenaPbS
Pbⓘ LinaritePbCu(SO4)(OH)2
Pbⓘ MimetitePb5(AsO4)3Cl

Other Databases

Link to USGS MRDS:10131900
Link to USGS MRDS:10047989

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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.
Quick NavTopCommoditiesMineral ListOther DatabasesOther Regions
 
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 21, 2026 15:51:49 Page updated: August 24, 2025 02:48:24
Go to top of page