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

Sites Table
AIM Id Name Alternate Name District County
GR003784 GOLD REEF MINE PRINCETON GRANITE
MRDS AMLI MILS Latitude Longitude Datum
300390122 46.3814 -113.2047
Township Range Section QSection UTM Northing UTM Easting UTM Zone UTM Datum
07N 13W 2 CCAD 5138889 331085 12
Average Elevation Elev Units Land Owner 250K Quad 100K Quad 24K Quad
F BUTTE PHILIPSBURG MAXVILLE
Property Type Update Date Who Updated
LODE 3/27/1995 SAC
Commodities Table
Commodities Identified
GOLD
SILVER
Agency Info Table
Information
Agency: NF
Region District: R1
Ranger District: PHILIPSBURG
Forest Service Tract:
Watershed Code: 17010202
Forest or Resource Area: DEERLODGE
Owner: M
Impact:
Report: Gold Reef Five caved adits with more than 2000 feet of total length follow one or more S42E 70SW veins over a strike length of more than 2000 feet. The vein is 2.5 feet wide, is comprised of quartz, siderite, specularite, chalcopyrite, magnetite, and carries high gold values. A select vein sample ran .392 oz/ton Au, .40 oz/ton Ag, .029% Cu, .013% Pb, .007% Zn. The vein is 2.5 feet wide and discordant with the enclosing unaltered quartzite of the Proterozoic Snowslip Formation (Elliott and others, 1992). Seven chip samples along a portion of the vein averaged .689 oz/ton (unpublished information, MBMG files). The nearby South Boulder Mill (Gold Reef Mill) was built to process ore from the mine, most of which was mined as an oxide ore (Emmons and Calkins, 1913)
Assay Table
Information
Sample Id: JGGR-1
Material Type: OR
Sample Method: SELECT
Comments:
Screening Criteria Table
Information
Mill Tailings: N
Adit Discharge: N
Metal Leaching: N
Water Erosion: N
Residence: N
Hazardous Materials: N
Open Adit: N
Visit: Y
Comments: LONN; 8/92

End of report. Retrieved 5/3/2024 3:44:40 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 The information is considered unpublished and is subject to correction and review on a daily basis.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.