Lake Saganaga-Gold Island Prospect

Unknown in Cook county in Minnesota, United States with commodity Gold

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Public Land Survey System information
Commodities
Materials information
Alteration
Host and associated rocks
Nearby scientific data
Geologic structures
Controls for ore emplacement
Economic information about the deposit and operations
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10082813
MRDS ID	W062163
Record type	Site
Current site name	Lake Saganaga-Gold Island Prospect

Geographic coordinates

Geographic coordinates:	-90.93931, 48.20222 (WGS84)
Location accuracy	1000(meters)
Relative position	Est Lat/Lon Is For The Approximate Center Of Gold Island.

Site location context

Political divisions (FIPS codes)

Cook(county)

Minnesota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Munker Island(quadrangle 1:24,000 scale)

Saganaga Lake(quadrangle 1:100,000 scale)

Quetico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Rainy Headwaters(hydrologic unit)

Rainy(hydrologic accounting unit)

Rainy(hydrologic subregion)

Souris-Red-Rainy(hydrologic region)

Federal lands

Superior National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Boundary Waters Canoe Area Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country	State	County
United States	Minnesota	Cook

Public Land Survey System information

Meridian	Township	Range	Section	Fraction	State
	66N	5W	14		Minnesota

Comments on the location information

GOLD ISLAND IS LOCATED IN SAGANAGA LAKE.

Commodities

Commodity	Importance
Gold	Primary

Materials information

Materials	Type of material
Gold	Ore
Fluorite	Gangue
Quartz	Gangue

Alteration

(Local) Dark Minerals In The Granite Are Almost Completely Changed To Carbonate.

Host and associated rocks

Host or associated Host

Rock type Plutonic Rock > Granitoid > Granite

Stratigraphic age (youngest) Neoarchean

Nearby scientific data

(1)	-90.93931, 48.20222	ListMap

Economic information

Geologic structures

Type of structure	Regional
Structure name	In The Quetico Subprovince Of The Superior Province.

Controls for ore emplacement

Sims And Day (1992) Note That The Fundamental Regional Control On Gold Deposits In The Superior Province Is Transcurrent And Oblique Slip-Shear Deformation Zones That Formed In Late Archean Time.

Comments on the geologic information

A 15 BY 25 MI GRANITE BODY FORMS GOLD ISLAND IN SAGANAGA LAKE. ON THE ISLAND, OCCURS A GOLD-BEARING FLUORITE ZONE WITH SOME FLUORITE PEGMATITE AND QUARTZ MASSES. THE GOLD IS PROBABLY RELATED TO A DEPOSITION OF SMOKY QUARTZ SOMEWHAT LATER THAN THE FLUORITE PEGMATITE.

Economic information about the deposit and operations

Commodity type	Metallic
Deposit size	Small
Significant	No

Comments on development

EXPLORATION FOR GOLD DEPOSITS IN THE REGION HAS BEEN HAMPERED BY A GENERALLY THIN, DISCONTINUOUS MANTLE OF PLEISTOCENE GLACIAL DEPOSITS. ; ECON.COM: THE OCCURRENCE OF LARGE GOLD DEPOSITS IN CANADA SUGGESTS THAT THE GREENSTONE-GRANITE TERRANES OF MINNESOTA ARE FAVORABLE FOR THE OCCURRENCE OF IMPORTANT GOLD DEPOSITS.

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	W062163

Bibliographic references

Deposit

GROUT, F.F., 1937, PETROGRAPHIC STUDY OF GOLD PROSPECTS OF MINNESOTA: ECONOMIC GEOLOGY, V. 32, NO. 1., P. 56-68.
Deposit

SIMS, P.K., AND DAY, W.C., 1992, A REGIONAL STRUCTURAL MODEL FOR GOLD MINERALIZATION IN THE SOUTHERN PART OF THE ARCHEAN SUPERIOR PROVINCE, UNITED STATES, IN SIMS, P.K., AND CARTER, L.M.H., EDS., CONTRIBUTIONS TO PRECAMBRIAN GEOLOGY OF THE LAKE SUPERIOR REGION: U.S. GEOLOGICAL SURVEY BULLETIN 1094-M, 19 P.

General comments

Subject category	Comment text
Deposit	GROUT (1937) DID NOT GIVE A MORE SPECIFIC NAME FOR THIS PROSPECT.

Reporter information

Type	Date	Name	Affiliation
Reporter	01-DEC-95	Sutphin, David M. (Cannon, W. F.)	U.S. Geological Survey
Updater	01-MAR-97	Sutphin, David M.	U.S. Geological Survey
Editor	01-MAY-97	Mason Jr., G.T.	U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.