Nevada · Humboldt County

Rainbow Ridge Opal Mine

Unconfirmed Gemstone Mixed Underground / Surface 2 mapped shafts 1 mapped adit

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Key facts

State: Nevada
County: Humboldt
Development status: Producer
Mine type: Mixed underground / surface
Primary commodity: Gemstone
Verification: Unconfirmed

Mine Location

Approximate Area

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Documented underground workings

Adit — documented in 1 source record.
USGS Historical Topographic Mine Features
Shaft — documented in 1 source record.
USGS Historical Topographic Mine Features

Historical mapped workings

USGS historical topographic mapping. Features may no longer exist.

2 shaft symbols
1 adit symbol

Shaft : Big Spring Butte , 1966
Adit : Big Spring Butte , 1966

View individual source records (4)

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

Adit
Mapped on historical USGS topographic data (Adit). Historical map features may no longer exist in the field.
Shaft
Mapped on historical USGS topographic data (Mine Shaft). Historical map features may no longer exist in the field.

USGS MRDS working type: Surface/Underground

MRDS work_type documents underground workings: Surface/Underground · work_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

Commodities & minerals

Gemstone · primary

Reported minerals

Opal

Access & recent conditions

Land: unknown

Community reports

No community field reports yet.

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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