The data below represent everything available in the MBMG Abandoned and Inactive Mines (AIM) database.

Sites Table
AIM Id Name Alternate Name District County
RA002222 LARRIGON MINE HUGHES CREEK PLACER-UNDERGRND HUGHES CREEK RAVALLI
MRDS AMLI MILS Latitude Longitude Datum
300810009 45.6161 -114.1764
Township Range Section QSection UTM Northing UTM Easting UTM Zone UTM Datum
02S 21W 34 C 5055056 720150 11
Average Elevation Elev Units Land Owner 250K Quad 100K Quad 24K Quad
F ELK CITY NEZ PERCE PASS HENDERSON RIDGE
Property Type Update Date Who Updated
LODE/MILL/PLCR 1/17/2001 CBM
Commodities Table
Commodities Identified
GOLD
Agency Info Table
Information
Agency: NF
Region District: R1
Ranger District: WEST FORK
Forest Service Tract:
Watershed Code: 17010205
Forest or Resource Area: BITTERROOT
Owner: N
Impact: U
Report: Larrigon Mine (RA002222) An unpublished report by an anonymous author provided a historical view of the mine (Anon, [n.d.], MBMG files). The Larrigon was discovered in 1918 by Raymond Larrigon and was sold by him in 1950. He drove underground workings and processed ore in a mill onsite. In 1959, it was bought by the Larrigon Mining Company. A (new) mill was built in 1960 by this company and their work included mainly bulldozer excavations. A photo in MBMG mineral property files shows the mill in 1977; it was described as a 50-ton gravity and amalgamation plant. A map in the MBMG files shows the adits and prospects on the Washington claim; two adits are shown about 50 ft to the northwest of the mill. Other claims in the area included: the Lost Cabin, Eurrecochea, Viscaya, and Larraui. McCulloch (1991) describes the deposit as a indurated paleoplacer with thin flat flakes of gold and reniform stream tin.
Screening Criteria Table
Information
Mill Tailings: Y
Adit Discharge: N
Metal Leaching: N
Water Erosion: N
Residence: N
Hazardous Materials: N
Open Adit: N
Visit: Y
Comments: VISITED BY MBMG 09/12/01. REMAINS OF OLD BURNED MILLSITE; NO OBVIOUS WORKINGS. ACTIVE.
Placer Table
Information
Gold: Y
Silver:
Titanium:
Rare Earth Elements:
Sapphire:
Garnet:
Tungsten:
Platinum:
Magnetite:
Hematite:
Pyrite:
Commodity Ref: McCulloch, R.B., 1992, Montana Mining Directory 1991, MBMG Bulletin 130, 135 p.
Geologic Source:
Geologic Source Ref:
Lag:
Transported: Y
Type Comments: Indurated paleoplacer on Belt Supergroup rocks containing thin flat flakes of gold and reniform stream tin.
Type Ref: McCulloch, R.B., 1993, Montana Mining Directory 1992, MBMG Bulletin 131, 76 p.
Unknown:
Fine:
Coarse:
Comments: Open stope; stationary trommel and sluice box. Cut and fill. 100% federal mineral ownership. 1 to 1.5 acre disturbance.
Size Ref: McCulloch, R.B., 1993, Montana Mining Directory 1992, MBMG Bulletin 131, 76 p.
Finess:
Fineref:
Spoil pile:
Wash pile:
Wash over:
Wash under:
Waste Ref:
Year Discovered: 1860's

End of report. Retrieved 5/2/2024 2:38:03 PM.

The preceding materials represent the contents of the databases at the Montana Bureau of Mines and Geology at the time and date of the retrieval. The information is considered unpublished and is subject to correction and review on a daily basis. The Bureau warrants the accurate transmission of the data to the original end user at the time and date of the retrieval. Retransmission of the data to other users is discouraged and the Bureau claims no responsibility if the material is retransmitted. There may be data in the request area that are not recorded at the Bureau.