Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Tecumseh Mine, Telegraph City, Foothill Copper Belt, Calaveras County, California, USAi
Regional Level Types
Tecumseh MineMine
Telegraph CityCity
Foothill Copper BeltBelt
Calaveras CountyCounty
CaliforniaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
37° 56' 56'' North , 120° 43' 5'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Copperopolis3,671 (2011)7.6km
East Oakdale2,762 (2011)19.4km
Angels Camp2,677 (2012)20.5km
Valley Home228 (2011)21.6km
Tuttletown668 (2011)23.1km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Calaveras Gem & Mineral SocietyAngels Camp, California20km
Mother Lode Mineral SocietyModesto, California42km
Amador County Gem & Mineral SocietySutter Creek, California50km
Mindat Locality ID:
75986
Long-form identifier:
mindat:1:2:75986:2
GUID (UUID V4):
78ee1a4c-55a8-4353-806e-6a03ad5201f4


A former lode Au-Cu mine located in the NE¼ sec. 11 & NW¼ sec. 12, T1N, R11E, MDM, 2.5 km (1.6 miles) NE of Telegraph City, S of Boucher Mountain (5 miles SW of Copperopolis). MRDS database stated accuracy for this location is 100 meters.

Mineralization is a vein deposit hosted in greenstone and talcose schist. The ore body strikes N10W and dips 75SW. The vein is 5 feet thick. Sulfides are abundant in the vein and in adjacent wall rock. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).

Workings include underground openings with an overall depth of 121.92 meters, and comprised of a 400 foot shaft with levels at 100 foot intervals.

Production data are found in: Clark, Wm. B. & P.A. Lydon (1962).

Copper cement may have been produced after the 1870's. The ore yielded $25 to $40 (period values) per ton.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Talc9.EC.05Mg3Si4O10(OH)2

List of minerals for each chemical element

HHydrogen
H TalcMg3Si4O10(OH)2
OOxygen
O QuartzSiO2
O TalcMg3Si4O10(OH)2
MgMagnesium
Mg TalcMg3Si4O10(OH)2
SiSilicon
Si QuartzSiO2
Si TalcMg3Si4O10(OH)2
AuGold
Au GoldAu

Other Databases

Link to USGS MRDS:10028625

Other Regions, Features and Areas containing this locality


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

 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, 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.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 26, 2024 20:58:29 Page updated: March 24, 2024 09:47:23
Go to top of page