California · Napa County

Silverado-Palisade Deposit

Unconfirmed Gold Mixed Underground / Surface 1 mapped shaft 2 mapped adits

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Key facts

State: California
County: Napa
Development status: Past Producer
Mine type: Mixed underground / surface
Primary commodity: Gold
Verification: Unconfirmed

Mine Location

Approximate Area

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Documented underground workings

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

Historical mapped workings

USGS historical topographic mapping. Features may no longer exist.

1 shaft symbol
2 adit symbols

Adit : Calistoga , 1958

View individual source records (3)

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.

Derived from MRDS oper_type (existing operation): Surface-Underground

MRDS oper_type documents existing underground operation (dev_stat=Past Producer): Surface-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: Past Producer

Operators / organizations

Patten Family (Silverado Mine) · Historical operator · Silv
State of California (Silverado Mine) · Source-reported owner

Commodities & minerals

Reported minerals

Adularia
Calcite
Chalcedony
Quartz
Aguilarite
Argentite
Arsenopyrite
Chalcopyrite

View all 16 reported minerals

Adularia
Calcite
Chalcedony
Quartz
Aguilarite
Argentite
Arsenopyrite
Chalcopyrite
Cinnabar
Galena
Gold
Polybasite
Proustite
Pyrargyrite
Pyrite
Sphalerite

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