Mine Index 10290702 Devry, Royal Princess Mine,California Diggings
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S-T-R | 28(NWSENE)-27N-5E | |
County: | Jo Daviess | |
Quadrangle: | Bellevue | |
District: | Upper Mississippi Valley | |
Subdistrict: | ||
Mine Index Number: 10290702
ISGS ID: | 9158 | MSHA ID: | |
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MAS ID: | 170850047 | MRDS ID: | |
Company Name: | Devry | ||
Mine/Site Name: | Royal Princess Mine, California Diggings | ||
Active/Abandoned: | Abandoned | ||
Start Date: | 1903 | End Date: | 1910 |
Commodity Type: | Metallic | ||
Commodity: | Lead, Zinc | ||
Minerals Present: | Galena, Dolomite, Calcite, Quartz, Marcasite, Pyrite | ||
Type of Mine: | Underground | ||
District: | Upper Mississippi Valley | Subdistrict: | |
County: | Jo Daviess | ||
Section/Township/Range: | 28(NWSENE)-27N-5E | ||
Latitude,Longitude: | 42.3083099999998,-90.3954099999998 | ||
Unit(s) Mined: | Maquoketa Shale Group | ||
Feature(s) Mined: | |||
MRDS Link: | https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10290702 | ||
Mindat link: |
Discussion
ROYAL PRINCESS IS THE ONLY ZINC DEPOSIT IN A LARGE AREA OF LEAD DIGGINS KNOWN AS THE CALIFORNIA DIGGINGS.
THIS IS A GASH-VEIN DEPOSIT ALONG A MINERALIZED JOINT IN THE GALENA DOLOMITE ABOVE THE TOP OF THE PROSSER CHERTY MEMBER. THE STRIKE OF THE CONTROLLING VERTICAL JOINT WAS ABOUT N 70 W AT THE WEST END OF THE MINE.
ECON.COM: FIVE INCLINED HOLES WERE DRILLED IN 1946-47 SEEKING ZN ORE IN THE LOWER PART OF THE PROSSER CHERTY MEMBER OF THE GALENA DOLOMITE AND IN THE GUTTENBERG AND ION MEMBERS OF DECORAH FM.
Mine Data/Information
Mine Data
Controls for ore emplacement
Vertical jointing
Workings at the site
Type of workings | Underground |
Name of workings | STOPE |
Length | 182.88M |
Width | 15.24M |
Width | 6.1M |
Overall length | 685.8M |
THREE SHAFTS WERE SUNK THE DEEPEST IS 265 FT.
References
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External Links
Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep_id=10290702
Also referenced as 10086402