1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Madonna No. 2

Past Producer in Jefferson county in Colorado, United States with commodities Feldspar, Quartz, REE
Map
XML
JSON
KML
B
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10087819
MRDS ID D010168
MAS/MILS ID 0080590117
Record type Site
Current site name Madonna No. 2
Alternate or previous names Deep Hole Mine, Madonna No. 2 Mine

Geographic coordinates

Point of reference Pit
Geographic coordinates: -105.19462, 39.37715 (WGS84)
Elevation 2158
Location accuracy 250(meters)
Relative position 18.8 MILES S 21 E FROM EVERGREEN. "Easternmost pegmatite of the SE4 of the SW4 of sec. 2,", #19 on pl. 1 of RS-11. However, E-most in that section is also the southermost, which would fit the description of Madonna No. 1. Therefore, coordinates are for the next pit on topo to the north of the southmost pit. At a very deep hole that fits description of deposit.

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Platte Canyon(quadrangle 1:24,000 scale)

Bailey(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper South Platte(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Pike and San Isabel National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 008S 070W 02 SE OF SW Colorado

Comments on the location information

  • SOUTH OF SPRING CREEK BETWEEN MADONNA 1, MADONNA 3, AND HOLLINGSWORTH PEGMATITES ; INFO FROM LAND.ST :(1975)
  • Described in RS-11 (p. 98) as "Easternmost pegmatite of the SE4 of the SW4 of sec. 2,", #19 on pl. 1 of RS-11. However, E-most in that section is also the southermost, which would fit the description of Madonna No. 1. Therefore, coordinates are for the next pit on topo to the north of the southmost pit, at a very deep hole that fits description of deposit.

Commodities

Commodity Importance
Feldspar Primary
Quartz Primary
REE Critical Secondary

Comments on the commodity information

  • RS-11 does not mention gadolinite at this location. See Madonna No. 3.

Materials information

Materials Type of material
Allanite Ore
Gadolinite Ore
Quartz Ore
Microcline Ore
Fluorite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Pikes Peak Granite
    Rock description Pegmatite;Pikes Peak Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Pikes Peak Granite
    Rock description Pegmatite;Pikes Peak Granite

Economic information

Geologic structures

Type of structure Regional
Structure description Front Range Uplift, Pikes Peak Batholith
Type of structure Local
Structure description Kennedy Gulch Fault Zone

Ore body information

  • General form CIRCULAR, OVAL
    Length 24.38M
    Width 18.29M

Comments on the ore body information

  • Orebody is 60' X 75', approx. circular. Wall zone. Core is composite quartz plus microcline. Replacement Unit. Described as "very deep. (about 50') cut into vertical core; core margin contains large 6-8 inch allanite crystals and minor fluorite. Mined for quartz and microcline." (RS-11, p. 98)

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name South Platte Pegmatite District

Land status

Ownership category National Forest
Ownership category Private

Workings at the site

  • Type of workings Unknown
    Overall depth 15.24M
  • Type of workings Surface
    Length 18.28M
    Width 22.86M
    Overall depth 15.24M

Comments on the workings information

  • OPEN CUT

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit CIRCULAR TO OVAL ZONED PEGMATITE CONSISTS OF WALL ZONE OF QUARTZ-MICROCLINE-BIOTITE, RELATIVELY LARGE QUARTZ-MICROCLINE CORE, AND CORE-MARGIN ZONE OF MINOR FLUORITE AND REPLACEMENT ALLANITE-GADOLINITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-83 Schwochow, Stephen D. Colorado Geological Survey
Updater 01-MAY-93 Spanski, Gregory T. U.S. Geological Survey
Editor 16-NOV-11 Wilson, Anna B U.S. Geological Survey merged and deleted duplicate record 10264027, corrected location, made revisions.
Reporter 21-SEP-78 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0080590117 = 10264027

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.