Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Natick Gap Exploration Prospect, Phoenix, Keweenaw Co., Michigan, USA

This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84): 47° 23' 7'' North , 88° 17' 41'' West
Latitude & Longitude (decimal): 47.3852777778, -88.2947222222

Commodities (Major) - Copper
Deposit Type: Fissure Copper Veins
Development Status: Prospect
Deposit Model: 96: Native Cu
Host Rock Unit: Portage Lake Volcanics
Host Rock: Basalt

The Natick Gap Exploration (Natick Mining Company) was located approx. 1.75 mi. east of the town of Phoenix. The company formed in 1853 and exploration work began shortly after. No additional information is available concerning production; it is assumed that this location was not favourable for mining.

Mineral List

1 valid mineral.

Regional Geology

This information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This data will improve over time as more accurate maps and data sets are added.

Stenian1000 - 1200 MaPortage Lake Volcanics

Major:: {basalt},Minor:: {andesite},Incidental:: {rhyolite, mudstone}

Portage Lake Volcanics - Lava flows, mostly basalt, andesite and felsite flows and subordinate interflow sedimentary rocks.

This unit is the same as unit Yp on paper map of Sims (1992). Description is taken from that unit description.

Mesoproterozoic1000 - 1600 MaMesoproterozoic volcanic rocks

Volcanic rocks

Isle Royale

May include hypabyssal intrusions.

Mesoproterozoic1000 - 1600 MaMesoproterozoic sedimentary


References for regional geology:

Data provided by

Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .

USGS compilers. State geologic map data. State Maps.

Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.

The above list contains all mineral locality references listed on 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 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.


Clarke, D.H., 1974, Copper Mines of Keweenaw.


Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 23, 2017 12:13:24 Page generated: October 31, 2016 02:04:09
Go to top of page