| Deposit ID | 10037120 |
|---|---|
| MRDS ID | M030486 |
| Record type | Site |
| Current site name | Little Hill Mine |
| Geographic coordinates: | -110.83208, 32.58678 (WGS84) |
|---|---|
| Elevation | 1268 |
| Relative position | 4 MI WSW OF ORACLE. |
Political divisions (FIPS codes)
Pinal(county)
Arizona(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Oracle(quadrangle 1:24,000 scale)
Mammoth(quadrangle 1:100,000 scale)
Tucson(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)
| Country | State | County |
|---|---|---|
| United States | Arizona | Pinal |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Gila and Salt River | 010S | 015E | 05,08,10 | Arizona |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Molybdenum | Secondary |
| Silver | Tertiary |
| Lead | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Chrysocolla | Ore |
| Covellite | Ore |
| Galena | Ore |
| Hematite | Ore |
| Magnetite | Ore |
| Malachite | Ore |
| Melaconite | Ore |
| Molybdenite | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Quartz | Gangue |
| Sericite | Gangue |
| Result | ROCK CHIP GEOCHEM SHOWED A 250 PPM CU ANOMALY SURROUNDED BY U-SHAPED 6 PPM MO ANOMALY |
|---|
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Metamorphic Rock > Gneiss | ||
| |||
| (1) | -110.83208, 32.58678 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Wnw Mogul Fault Dipping 40-60s With Left Lateral Displacement Of 1500 Ft Or Maybe More |
| Thickness | 47.24M |
|---|---|
| Length | 60.96M |
| Width | 15.24M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1885 |
| District name | Little Hills District |
|---|
| Ownership category | State Forest |
|---|
| Type | Owner |
|---|---|
| Owner | Little Hill Mining Co. |
| Home office | Oracle, Az. |
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 68.58M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | M030486 |
DURNING, 1972, MS THESIS, UNIV OF AZ.
DURNING & DAVIS, 1978, AZ GEOL SOC DIGEST, V. 11, P. 81-89.
JINKS, 1961, M.S. THESIS, UNIV OF AZ.
CIMRI
| Subject category | Comment text |
|---|---|
| Deposit | THIS REPORT WAS TAKEN FROM RECORD M030486 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEODORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Deposit | DIMENSIONS DESCRIBE OREBODY MINED IN 1964 WHICH AVERAGED 1.5% CU. |
| Deposit | Discovery Year: 1880'S |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1983 | Peterson, Jocelyn A. | U.S. Geological Survey | |
| Updater | 01-MAY-1995 | Orris, Greta J. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 03/13/2024 |
|---|---|
| MSHA mine ID | 0200350 |
| Mine name (MSHA) | Little Hill Mine |
| Current operator | Decorative Rock Sales LLC |
| Current controller (parent) | Mary Jo Helmick; Daniel J Adragna |
| Mine type | Surface (Metal / non-metal) |
Inferred by coordinate + name similarity (281 m, 1.00 match). Confirm against MSHA if precision matters — non-USGS-curated cross-references may occasionally point at a neighbouring mine.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
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