RockWoof
Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Sketch map

Alliance Sulfur Plant (Producer)Lake Hermitage Dome (Past Producer)Unnamed Geothermal Prospect (Occurrence)Unnamed Geothermal Prospect (Occurrence)Lake Hermitage Mine (Past Producer)Garden Island Bay Mine (Past Producer)Unnamed Geothermal Prospect (Occurrence)Garden Island Bay (Producer)Unnamed Geothermal Prospect (Occurrence)
Past ProducerProducerProspectOccurrenceStatus unknown
9 paw pins, one per site. Hover or tap a pin for the site name. 10 site(s) with USGS coordinates outside the outline are not pinned. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Field cards: what kind of sites?

7
Producer

Was producing when the record was made.

7
Occurrence

The mineral was noted here, without development.

5
Past Producer

Produced ore or material at some point in the past.

Status terms come from USGS MRDS records.

Minerals recorded here

Halite 6Sulfur 2Anhydrite 1

Commodities

Sulfur 11Geothermal 7Petroleum (Oil) 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Main Pass Sulfur MineSulfur, Petroleum (Oil)Anhydrite, Halite, SulfurProducer29.275, -88.772
Lake Washington MineSulfurHalitePast Producer29.384, -89.808
Grand Isle Block 18 MineSulfurHaliteProducer29.160, -89.940
Grand Isle Block 16 MineSulfurHaliteProducer29.190, -89.940
Garden Island BaySulfurHaliteProducer29.096, -89.172
Lake Hermitage MineSulfurHalite, SulfurPast Producer29.310, -89.670
Grand Ecaille Sulfur Mine——Past Producer29.364, -89.788
Main Pass Block 299Sulfur—Producer29.261, -88.774
Garden Island Bay MineSulfur—Past Producer29.093, -89.194
Lake Hermitage DomeSulfur—Past Producer29.534, -89.905
Lake Washington MineSulfur—Producer29.362, -89.788
Unnamed Geothermal ProspectGeothermal—Occurrence29.424, -89.929
Unnamed Geothermal ProspectGeothermal—Occurrence29.599, -90.932
Unnamed Geothermal ProspectGeothermal—Occurrence29.082, -89.179
Unnamed Geothermal ProspectGeothermal—Occurrence29.344, -89.723
Alliance Sulfur PlantSulfur—Producer29.700, -89.975
Unnamed Geothermal ProspectGeothermal—Occurrence29.650, -89.688
Unnamed Geothermal ProspectGeothermal—Occurrence29.366, -89.340
Unnamed Geothermal ProspectGeothermal—Occurrence29.206, -89.045

Fossil collections

The Paleobiology Database lists 1 fossil collection records in Plaquemines Parish. These are research records, not public dig sites.

Nearby counties

Jefferson Parish · St. Bernard Parish · Lafourche Parish · Orleans Parish · Terrebonne Parish

Back to all Louisiana counties.

Related articles

How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.

Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.

Updated