Basin Mine Group

Producer in Santa Cruz county in Arizona, United States with commodities Copper, Silver, Gold, Lead
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. Alteration
  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. Mining district
  16. Land status
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10048356
MRDS ID M899944
Record type Site
Current site name Basin Mine Group
Alternate or previous names Wieland Group, Dewey Prospect, Great Silver Mine, Red Rock Prospect, Basin No 1 Prospect
Related records 10234866

Geographic coordinates

Geographic coordinates: -110.7165, 31.48097 (WGS84)
Elevation 1478
Relative position 1.5 MILES NW OF HARSHAW

Site location context

Political divisions (FIPS codes)

Santa Cruz(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Harshaw(quadrangle 1:24,000 scale)

Nogales(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Coronado National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Arizona Santa Cruz

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 022S 016E 33 CENTER OF E Arizona

Comments on the location information

  • LOCATED ON RIDGE BETWEEN HARSHAW AND ALUM CREEKS; DEWEY PROSPECT LOCATED 600 FT SOUTH OF BASIN NO.1 PROSPECT; GREAT SILVER MINE IS 1/4 MILE EAST OF BASIN MINE ; INFO FROM LAND.ST :(1979)

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary
Lead Tertiary

Materials information

Materials Type of material
Chrysocolla Ore
Cuprite Ore
Limonite Ore
Malachite Ore
Tetrahedrite Ore

Alteration

  • (Local) Andesite Is Crushed And Highly Altered To Soft Vein Material;Surface Oxidation To Great Depths

Analytical data

Result EARLY 1900'S ASSAY VALUES AVERAGED 7% CU, 1-1.5 OZ/T AU, 5.5% PB, 15 OZ/T AG

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Chronological age 72.1

Nearby scientific data

(1) -110.7165, 31.48097

Economic information

Geologic structures

Type of structure Regional
Structure description Porphyritic To Fine-Grained Thin To Very Thick Trachyandesite Flows
Type of structure Local
Structure description Nw- And Ne-Trending Fissure Systems Cutting Thick-Bedded, Very Fine-Grained Volcanics Of Red Mountain

Ore body information

  • General form LENSES AND SHOOTS
    Strike N64W
    Dip 70-80 SSW
    Length 6.1M
    Width 0.76M

Controls for ore emplacement

  • Nw-Trending Fault Fissure And Vein System-Ore Occurs In Lenses And Shoots That Apparently Pitch Westward On Vein

Comments on the geologic information

  • OLDER SILICATED LIMESTONE AND ALTERED SHALE OCCUR LOCALLY; GREAT SILVER VEIN IS UNDERLAIN BY ANDESITE CONTAINING 2 FT OF SOFT DECOMPOSED VEIN MATERIAL

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1885
Discoverer George F. Wieland And Associates
Year of first production 1882
Year of last production 1949

Mining district

District name Harshaw District

Land status

Ownership category National Forest

Comments on the production information

  • PRODUCTION DATA AVAILABLE FOR YEAR 1916; WORKED IN 1880'S AND EARLY 1900'S; PRODUCED SOME 100 TONS OF ORE

Comments on the workings information

  • WORKINGS ON GREAT SILVER VEIN INCLUDED A 50-FT TUNNEL, STOPED 60 FT TO SURFACE; BASIN NO.1 PROSPECT WORKINGS INCLUDED 188 FT TUNNEL PARALLELING SOUTH OR HANGINGWALL OF VEIN IN FAULT FISSURE, 20-FT. VERTICAL WINZE; DEWEY PROSPECT WORKINGS INCLUDED A SHAFT AND OPEN CUT

Comments on development

  • OPERATORS AND OWNERS INCLUDED GEORGE WIELAND AND THEODORE GEBLER, MUMME MINING CO, GEORGE WILLARD, F.E. THAYER AND GUS JAEGER, W.R. JOHNSON, J.W. WILSON, T.G. DUNHAM

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit VEIN IN DEWEY PROSPECT DIPS 75 NNE AND IS 2 FT WIDE; VEIN IN GREAT SILVER MINE DIPS 30N AND IS 2-3 FT WIDE; SLICKENSIDES ON WALL OF BASIN NO.1 FAULT FISSURE PITCH 15E
Deposit Discovery Year: 1880'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1982 Calder, Susan R. Arizona Bureau of Geology and Mineral Technology

Beyond USGS

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

Authoritative Arizona resources

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