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

Sites Table
AIM Id Name Alternate Name District County
MA003558 VIKING MINE PONY MADISON
MRDS AMLI MILS Latitude Longitude Datum
DC11831 300570628 45.6503 -111.9917
Township Range Section QSection UTM Northing UTM Easting UTM Zone UTM Datum
02S 03W 20 ADBC 5055138 423157 12
Average Elevation Elev Units Land Owner 250K Quad 100K Quad 24K Quad
F BOZEMAN BOZEMAN PONY
Property Type Update Date Who Updated
LODE 4/8/1995 JDL
Commodities Table
Commodities Identified
GOLD
Agency Info Table
Information
Agency: NF
Region District: R1
Ranger District: JEFFERSON
Forest Service Tract:
Watershed Code: 10020005
Forest or Resource Area: DEERLODGE
Owner: N
Impact:
Report: Atlantic & Pacific-Viking-Western Pacific This area is treated as one property because geology and environmental problems are continuous and related across the area. The area contains 3 adit discharges, a large tailings pile with mass-wasting problems, and some mass-wasting of dump material from the Atlantic and Pacific adit (see map). In addition, the Atlantic and Pacific contains a large open cut on private land which has been mined in recently under a Department of State Lands operating permit. The area lies along the northwest trending Mammoth Fault, a major high angle structure which played a part in localizing both the Tobacco Root Batholith (Reid, 1957) and mineralization. The Atlantic & Pacific has been the only productive mine at the site. Gold ore was mined from a fractured aplite dike bounded on and associated with Cretaceous granodiorite on the north, and in contact with Archean gneiss on the south (Winchell, 1914; Tansley and others, 1933). The ore contained quartz and auriferous pyrite and occurs veins and disseminated in the country rock. Most was mined from surface workings, but there are more than 600 feet of underground workings. The portal is located on national forest ground and discharges water. Water may enter these underground workings from the large open cut above (R. McCulloch, MBMG, oral communication). Approximately 75,000 tons of tailings are also present at the site. The tailings contain high gold values (.026 oz/ton) but low silver and base metal values (see map). They are being eroded during storm events into an adjoining drainage where they contaminate springs feeding Park Creek. On the Western Pacific, or Viking property, granodiorite and aplite with mineralized shear zones and disseminated pyrite was also mined, although metal values from samples taken were low (see map and USBM MLA-95-83). Despite the poor sample values and the low potential assigned to the property by O'Neill and others (1983), explorationists have done some recent drilling. Probably the extensive area of altered rock and anomalous gold have generated some optimism for finding low grade bulk tonnage gold deposits. Two short caved adits discharge water on the Western Pacific. The dumps associated with the discharges contain only weakly iron stained rock and amount to only a few hundred tons.
Screening Criteria Table
Information
Mill Tailings: N
Adit Discharge: Y
Metal Leaching: N
Water Erosion: N
Residence: N
Hazardous Materials: N
Open Adit: N
Visit: Y
Comments: LONN; 9/92

End of report. Retrieved 4/30/2024 5:19:06 PM.

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