USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Nevada · Lyon County
Rockland Mine
Source Corroborated Gold Underground 9 mapped adits
Key facts
- State
- Nevada
- County
- Lyon
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Gold
- Verification
- Source Corroborated
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
Deposit: Discovered in the late 1860's. It produced 2,747 tons of ore from 1870 to 1879 with gross value $74,503; 42,597 tons from 1915 to 1917 with gross value $263,071; and 443 tons from 1933 to 1934 with gross value $43,037. Developed by tunnels. ; …
Additional documented workings
-
Adit
— documented in 2 source records.
USGS Historical Topographic Mine Features -
Tunnel
— documented in 1 source record,
noting 1860 ft.
Mindat
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 9 adit symbols
- Adit : Pine Grove Spring , 1988
- Adit : Pine Grove Hills , 1958
View individual source records (5)
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. -
Adit
Mapped on historical USGS topographic data (Adit). Historical map features may no longer exist in the field. -
Tunnel
Documented in Mindat locality data. Evidence: 17 with gross value $263,071; and 443 tons from 1933 to 1934 with gross value $43,037. Developed by tunnels. ; ... Historical context…
- Derived from MRDS oper_type (existing operation): Underground
- MRDS oper_type documents existing underground operation (dev_stat=Past Producer): Underground · oper_type
Verification
Source Corroborated
Additional historical source evidence corroborates this record. This is not a member field verification of current conditions.
Why it's listed
USGS source data documents underground workings for this record.
History & operations
Historical record
- Development status: Past Producer
Commodities & minerals
Reported minerals
- Acanthite
- commodity:Copper
- commodity:Gold
- commodity:Silver
- Native Gold
- Native Silver
- Pyrite
- Quartz
View all 11 reported minerals
- Acanthite
- commodity:Copper
- commodity:Gold
- commodity:Silver
- Native Gold
- Native Silver
- Pyrite
- Quartz
- Quartz-monzonite
- Rhyolite
- Stephanite
Access & recent conditions
- Land
- unknown
Community reports
No community field reports yet.
I Visited This MineSources & evidence
USGS Historical Topographic Mine Features
Type: Historical mapped physical features
Dataset: DOI 10.5066/P9TAALR6
Supports:
- mapped adit symbols (9)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 61160
Supports:
- locality identity
- reported minerals (11)
A Mindat locality match does not by itself establish underground workings.
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Cowboy Mine
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Documented adit evidence