The data below represent everything available in the MBMG Abandoned and Inactive Mines (AIM) database.
AIM Id | Name | Alternate Name | District | County |
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GR003109 | BROOKLYN MINE AND MILL | PRINCETON | GRANITE |
MRDS | AMLI | MILS | Latitude | Longitude | Datum |
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20-025 | 46.3903 | -113.1219 |
Township | Range | Section | QSection | UTM Northing | UTM Easting | UTM Zone | UTM Datum |
---|---|---|---|---|---|---|---|
07N | 12W | 5 | ACC |
Average Elevation | Elev Units | Land Owner | 250K Quad | 100K Quad | 24K Quad |
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6200 | F | BUTTE | PHILIPSBURG | PIKES PEAK |
Property Type | Update Date | Who Updated |
---|---|---|
LODE/MILL | 3/27/1995 | SAC |
Information |
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Agency: NF Region District: R1 Ranger District: PHILIPSBURG Forest Service Tract: Watershed Code: 17010202 Forest or Resource Area: DEERLODGE Owner: N Impact: Report: Brooklyn The Brooklyn is one of the most extensively developed mines in the Princeton district, and dumps and mill tailings associated with the property are responsible for some environmental damage. In fact, tailings disposal was an environmental issue here even in 1951. Underground maps (unpublished information, MBMG files) indicate the ore was mostly mined from a soft, sheared porphyry dike with a N36W vertical attitude. The dike contains pyrite and nodules of quartz, barite, sphalerite, galena, ccalcite, lead carbonate, and copper carbonate (Emmons and Calkins, 1913). Some ore was also extracted from the adjacent sheared limestone and black shale of the Madison group. An outcrop of granodiorite related to the Royal stock is mapped one half mile to the southeast (McGill, 1959). The average grade of ore produced was 12 oz/ton Ag, 1% Cu, 3% Pb, and 8% Zn (unpublished information, MBMG files), but some of the ore was of considerably higher grade. In 1907, 80 tons provided 37 oz/ton Ag, 1.7% Cu, 8% Pb, and 13% Zn (Emmons and Calkins, 1913). The mine was worked intermittantly beginning in 1907. In 1917, a crude flotation mill was built at the site (the Brooklyn Mill of this paper), and it also operated intermittantly with poor recovery rates until 1927. Sometime in the 1940s a new flotation mill, the Non Pareil mill, was constructed downstream of the mine and operated until perhaps 1951. Exploration was still proceeding at the mine in the ealy 1960s. Today the mine encompasses over 3000 feet of workings with 3 caved adits, 1 caved shaft, and 1 open adit. Runoff from the upper workings and Brooklyn Mill tailings is carried directly into Boulder Creek during storm events, and may be responsible for the fish kills reported in the 1960s (oral communication, Mark Russell, Princeton resident). There is also evidence of a seasonal discharge from the lower adit (the Lower Brooklyn of this study). The Lower Brooklyn dump contains 5000 tons of clays, black shale, limestone, and pophyry along the banks of Boulder Creek. Most of the material contains 5% pyrite and some quartz alteration. |
Sample Id | Sampler | pH | SC | Date | TempC | Flow Rate | Flow Units | Flow Method | Source | Ind No | Veg | Stain | Salt | Sulf | Turb | Location Related to Stream | Stream | Sedimention | Photos Available? | Photo Numbers | Remarks |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BLBS10L | OEB | 8.43 | 148 | 8/17/1992 | 1990 | GPM | METER | STREAM | NO | DOWN | BOULDER CREEK | NO | BOULDER CR.; 100' DOWNSTREAM OF MINE |
Information |
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Mill Tailings: Y Adit Discharge: Y Metal Leaching: Y Water Erosion: Y Residence: N Hazardous Materials: N Open Adit: Y Visit: Y Comments: MBMG HYDROGEOLOGIST: JAMES MADISON; 8/18/92 |
Sample Id | Source | Date | Sampler | Sample Type | L Transect | Soil Interval | Indicator of contamination | Path | Veg | Color | Salt | Photos Available? | Photo Numbers |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BLBD10M | MI | 8/18/1992 | ARB | COMP | 0-6", 5' INTERVALS | ||||||||
FBRT10H | MI | 7/6/1993 | TB | COMP | |||||||||
FBRW10H | WA | 7/6/1993 | TB | COMP | |||||||||
FLBW10H | WA | 8/5/1992 | JL | COMP |
Type | Wind Erosion | Veg | Rill | Gully | Seep | Pond | Breach | None | Stability | Floodplain | Dist Stream | Photos Available? | Photo Numbers |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MI05 | MOD | BARREN | R | LOW | OUT | 500 | |||||||
WA01 | LOW | BARREN | N | LOW | IN | 0 | |||||||
WA02 | LOW | BARREN | N | LOW | OUT | 1000 | |||||||
WA03 | LOW | BARREN | N | LOW | OUT | 1000 | |||||||
WA04 | LOW | BARREN | N | LOW | OUT | 1000 |
Information |
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Investigator: J. MADISON Date: 8/18/1992 Photos Available?: Access: Nearest Wetlands/Bog: Drainage Basin: BOULDER CREEK Water Contact Stream: Y Nearest Surface Water Intake: 7 Number of Surface Water Intake(s) observed within 15 miles downstream: Uses of Surface Water Intake(s) observed within 15 miles downstream: IRRIGATION; STOCK Nearest Wells (miles): 2.5 Number of Wells within 4 miles: 5 Uses of Wells within 4 miles: DOMESTIC Nearest Dwelling (miles): 2.5 Number of Months Occupied: 12 Number of Houses within 2 miles: 5 Recreational Usage on Site: L Nearest Recreational Area (miles): Name or Type of Recreational Area: Safety Risk from Open Adit/Shaft: Y Safety Risk from Highwall or Unstable Slopes: Safety Risk from Unstable Structures: Safety Risk from Chemicals: Safety Risk from Solid Waste (includes sharp rusted items): Safety Risk from Explosives: Sensitive Environments within 2 miles of Site or 15 miles Downstream: Population within 0-0.25 miles: 0 Population within 0.25-0.5 miles: Population within 0.5-1 miles: 0 Population within 1-2 miles: 0 Population within 2-3 miles: 0 Population within 3-4 miles: Public Interest: |
Sample Id | Lab Id | Description | Project | Comments |
---|---|---|---|---|
BLBD10M | 92S0892 | BROOKLYN MINE AND MILL | DLFORST | Changed by Rich; 5/31/95 |
End of report. Retrieved 8/24/2024 11:40:29 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.