Tohono | UndergroundMines

Key facts

State: Arizona
County: Pinal
Development status: Producer
Mine type: Mixed underground / surface
Primary commodity: Copper Oxide
Verification: Unconfirmed

Also known as

Cyprus Casa GrandeCasa Grande, Cyprus Tohono, Lakeshore, Treasure State, Trans Arizona Res. Inc

Mine Location

Approximate Area

Open in Mine Map

Documented underground workings

Source classification: Underground operation documented

Specific physical workings are not yet documented in discrete records.

Historical mapped workings

USGS historical topographic mapping. Features may no longer exist.

3 shaft symbols

View individual source records (4)

Every underlying record used to build the summary above, for research/verification use.

USGS MRDS working type: Surface/Underground
USGS MRDS working type: Underground

MRDS work_type documents underground workings: Underground, Surface/Underground · work_type
MRDS oper_type documents existing underground operation (dev_stat=Producer): Underground · oper_type

Verification

Unconfirmed

Source records support underground workings, but UndergroundMines has not yet independently verified this mine.

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Why it's listed

Source records document both underground and surface mining.

View sources & evidence

History & operations

Historical record

Development status: Producer

Operators / organizations

Tohono O'odham Nation · Historical operator · 1994
Noranda · Source-reported owner
Freeport-McMoran Copper and Gold Inc · Historical operator · 2009

Commodities & minerals

Reported minerals

Calcite
Chlorite
Hematite
Magnetite
Quartz
Bornite
Brochantite
Chalcocite

View all 21 reported minerals

Calcite
Chlorite
Hematite
Magnetite
Quartz
Bornite
Brochantite
Chalcocite
Chalcopyrite
Chrysocolla
Covellite
Cuprite
Diopside
Galena
Garnet
Goethite
Molybdenite
Pyrite
Sphalerite
Tenorite
Tremolite

Access & recent conditions

Land: unknown

Community reports

No community field reports yet.

I Visited This Mine

Sources & evidence

USGS Mineral Resources Data System

Type: Historical mine record

Supports:

mine identity
development status
commodities
underground eligibility evidence

USGS Historical Topographic Mine Features

Type: Historical mapped physical features

Dataset: DOI 10.5066/P9TAALR6

Supports:

mapped shaft symbols (3)

Historical mapped features may no longer exist.

Dataset information

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