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

Unnamed Salt (Unknown)Kauai Bauxite Deposit + 3 more nearby (Occurrence)Mahaulepu Quarry and Mill (Producer)Northeast Kauai Deposit (Prospect)East Central Kauai Deposit (Prospect)Kapaia Valley Quarry (Past Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
6 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

East Central Kauai Deposit

We picked it because its USGS record mentions 1 of the minerals on our cards and 1 of our card minerals overall. That ties with 3 other site(s), so we broke the tie by mine status (past producers first), then USGS record quality, then name. USGS lists it as prospect for Aluminum. Minerals mentioned: Magnetite. Approx. location 22.039, -159.383. USGS record.

Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.

Field cards: what kind of sites?

3
Occurrence

The mineral was noted here, without development.

3
Prospect

Explored or test-dug, with no recorded production.

1
Producer

Was producing when the record was made.

1
Past Producer

Produced ore or material at some point in the past.

1
Unknown

Status not recorded.

Status terms come from USGS MRDS records.

Mineral cards

Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.

Minerals recorded here

Bauxite 2Ilmenite 1Gibbsite 1

Commodities

Aluminum 4Titanium 1Metal 1Calcium 1Salt 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Hawaii BauxiteAluminumBauxite, GibbsiteOccurrence22.054, -159.500
Kauai Bauxite Deposit—Bauxite, IlmeniteOccurrence22.054, -159.500
Kaneha Reservoirs DepositTitanium, Metal—Occurrence22.054, -159.500
Kauai DepositsAluminum—Prospect22.074, -159.502
East Central Kauai DepositAluminum—Prospect22.039, -159.383
Northeast Kauai DepositAluminum—Prospect22.201, -159.427
Mahaulepu Quarry and MillCalcium—Producer21.902, -159.450
Kapaia Valley Quarry——Past Producer21.990, -159.389
Unnamed SaltSalt—Unknown21.904, -159.613

Fossil collections

The Paleobiology Database lists 5 fossil collection records in Kauai County. These are research records, not public dig sites.

Nearby counties

Honolulu County · Maui County · Hawaii County

Back to all Hawaii 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