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Otto Prospect

Occurrence in Macon county in North Carolina, United States with commodities Iron, Pig Iron, Copper, Sulfides, Zinc, Lead, Sulfur-Pyrite
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10025189
MRDS ID K000866
Record type Site
Current site name Otto Prospect
Alternate or previous names Sheenah Prospect, Little Coweetah Prospect

Geographic coordinates

Geographic coordinates: -83.31516, 35.06539 (WGS84)
Relative position ON SPUR ABOVE AND EAST OF MIDDLE CREEK ABOUT 1.4 MILES EAST SOUTHEAST OF OTTO, N. C.

Site location context

Political divisions (FIPS codes)

Macon(county)

North Carolina(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Scaly Mountain(quadrangle 1:24,000 scale)

Fontana Lake(quadrangle 1:100,000 scale)

Knoxville(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Little Tennessee(hydrologic unit)

Upper Tennessee(hydrologic accounting unit)

Upper Tennessee(hydrologic subregion)

Tennessee(hydrologic region)

Federal lands

Nantahala National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Croatan National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

National Forests in North Carolina(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States North Carolina Macon

Comments on the location information

  • LAT-LONG VALUES FROM USGS NATIONAL ATLAS ARE FOR A CENTRAL LOCATION IN THE GIVEN 1:24,000 QUADRANGLE IN MADISON COUNTY, NORTH CAROLINA

Commodities

Commodity Importance
Iron, Pig Iron Primary
Copper Primary
Sulfides Tertiary
Zinc Critical Tertiary
Lead Tertiary
Sulfur-Pyrite Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Limonite Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Barite Gangue
Biotite Gangue
Calcite Gangue
Clinozoisite Gangue
Diopside Gangue
Garnet Gangue
Hornblende Gangue
Oligoclase Gangue
Quartz Gangue

Alteration

  • (Local) Iron, Calcium, And Silica Enrichment; Biotite, Hornblende, Calcite, And Quartz

Analytical data

Result USGS ANALYSIS (ROSS, 1935): 33.29% S
Result 45.67% FE
Result 1.14% ZN
Result 0.21% CU
Result 0.26% PB
Result TRACE AS. THE COPPER CONTENT IS O.29% AND ONLY A TRACE OF ZINC IS PRESENT, ACCORDING TO A TVA ANALYSIS IN A 1943 OPEN-FILE REPORT.

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Coweeta Group
    Rock description Coweeta Group

Nearby scientific data

(1) -83.31516, 35.06539
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Northeast

Ore body information

  • General form PINCH AND SWELL
    Strike SE
    Dip 20 NW
    Thickness 3M

Controls for ore emplacement

  • Bedding

Comments on the geologic information

  • THE VEIN IS DESCRIBED BY ROSS (1935) AS A PYRRHOTITE VEIN WHOSE EMPLACEMENT WAS INITIATED "BY INTRODUCTION OF A PINK APLITIC GRANITE WHICH FORMS THE MOST ABUNDANT GANGUE MATERIAL IN THE VEIN." THE APLITE IS PARTLY REPLACED BY ORE, AND ALSO OCCURS AS LENSES AND STRINGERS IN THE ADJACENT WALL ROCK, ACCORDING TO ROSS (1935). VEIN QUARTZ WAS EMPLACED AFTER APLITE, AND WAS FOLLOWED BY REPLACEMENT OF COUNTRY ROCK AND VEIN QUARTZ BY FERROMAGNESIAN MINERALS, CHIEFLY HORNBLENDE, BIOTITE, AND CLINOZOISITE. CALCITE FORMS 10 TO 15 PERCENT OF THE VEIN. SIDERITE FOLLOWED CALCITE. THE SULFIDES WERE DEPOSITED LAST, AND CONSIST PREDOMINANTLY OF PYRRHOTITE, WITH SUBORDINATE PYRITE, AND MINOR AMOUNTS OF SPHALERITE AND SUBORDINATE CHALCOPYRITE. TRACE AMOUNTS OF GALENA WERE OBSERVED.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No

Comments on the workings information

  • ROSS (1935) STATES THAT TWO SHALLOW TEST PITS HAVE BEEN DUG ON THE VEIN, AND THAT THE VEIN FOLLOWS THE STRIKE OF THE COUNTRY ROCK. THE ATTITUDE OF THE VEIN BELOW THE SURFACE IS NOT KNOWN.

Comments on development

  • SAMPLES COLLECTED AND POLISHED SURFACES PREPAIRED ON FILE GEOLOGIC BRANCH, TVA, KNOXVILLE SAMPLE NO. 5564-1-1 TO 5; 5564-2-1, 2.

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1973 Fagan, James M. U.S. Geological Survey
Updater 01-JUN-1992 Klein, T.L. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site