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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GR007828 | PORT ROYAL | PRINCETON | GRANITE |
MRDS | AMLI | MILS | Latitude | Longitude | Datum |
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46.4094 | -113.0953 |
Township | Range | Section | QSection | UTM Northing | UTM Easting | UTM Zone | UTM Datum |
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08N | 12W | 34 | BBAC |
Average Elevation | Elev Units | Land Owner | 250K Quad | 100K Quad | 24K Quad |
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7400 | F | BUTTE | PHILIPSBURG | PIKES PEAK |
Property Type | Update Date | Who Updated |
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LODE | 5/2/1995 | SAC |
Information |
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Agency: NF Region District: R1 Ranger District: PHILIPSBURG Forest Service Tract: Watershed Code: Forest or Resource Area: DEERLODGE Owner: P Impact: L Report: Port Royal The Port Royal was the largest producer in the Princeton district, with over $2 million in gold recovered from the 1890s until its closure in 1931 (unpublished information, MBMG files). Five drifts with a total length of 8000 feet follow a S65E 60SE vein along a normal fault in granodiorite of the Royal stock (Emmons and Calkins, 1913). The vein is from 4 inches to 2 feet wide and composed of quartz, pyrite, and galena, although vein pieces on the dump contain less than 1% sulfides. Biotite and feldspar in the granodiorite have been altered to calcite, sericite, and chlorite. The ore was richest on either side of a 100 foot wide granite porphyry dike which must be related to the mineralization. The vein contained from $8 to $200 per ton in gold values. A gravity mill was built at the mine in 1892 and the tailings were allowed to run down Royal Gold Creek. Although a few remnant of the original tailings remain just below the mine (the Port Royal Tailings), most ended up a mile downstream (Royal Gold tailings). Here a cyanide mill was built in 1905 to re-treat them (Emmons and Calkins, 1913). Today, all adits are caved except the lower one, which has a large volume discharge. |
Information |
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Sample Id: JGPR Material Type: MI Sample Method: COMP Comments: Port Royal mine. |
Information |
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Mill Tailings: Y Adit Discharge: Y Metal Leaching: N Water Erosion: N Residence: N Hazardous Materials: N Open Adit: N Visit: Y Comments: LONN; 8/92; see also Sunday mine |
Information |
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Investigator: J. LONN Date: 8/1/1992 Photos Available?: Access: Nearest Wetlands/Bog: Drainage Basin: Water Contact Stream: Nearest Surface Water Intake: Number of Surface Water Intake(s) observed within 15 miles downstream: Uses of Surface Water Intake(s) observed within 15 miles downstream: Nearest Wells (miles): Number of Wells within 4 miles: Uses of Wells within 4 miles: Nearest Dwelling (miles): Number of Months Occupied: Number of Houses within 2 miles: Recreational Usage on Site: Nearest Recreational Area (miles): Name or Type of Recreational Area: Safety Risk from Open Adit/Shaft: 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: Population within 0.25-0.5 miles: Population within 0.5-1 miles: Population within 1-2 miles: Population within 2-3 miles: Population within 3-4 miles: Public Interest: |
End of report. Retrieved 8/24/2024 11:43:52 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.