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

Sand Island Placer (Occurrence)Hammond-Mcgowan-Columbia Placer (Occurrence)Hammond Black Sand Locality No. 2 (Prospect)Hammond Black Sand Locality No. 1 + 1 more nearby (Prospect)Unnamed Pit (Producer)Gant Creek 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

Sand Island Placer

We picked it because its USGS record mentions 1 gem or collectible mineral (Gold) and 1 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as occurrence for Gold. Minerals mentioned: Gold. Approx. location 46.275, -124.021. 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?

2
Occurrence

The mineral was noted here, without development.

2
Prospect

Explored or test-dug, with no recorded production.

1
Past Producer

Produced ore or material at some point in the past.

1
Producer

Was producing when the record was made.

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

Ilmenite 1Magnetite 1

Commodities

Titanium 4Silica 1Metal 1Iron 1Flagstone 1Gold 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Hammond-Mcgowan-Columbia PlacerTitanium, Metal, IronIlmenite, MagnetiteOccurrence46.216, -124.001
Gant Creek QuarrySilica—Past Producer46.170, -123.482
Hammond Black Sand Locality No. 1Titanium—Prospect46.195, -123.938
Hammond Black Sand Locality No. 2Titanium—Prospect46.201, -123.956
Unnamed PitFlagstone—Producer46.157, -123.759
Columbia River BarTitanium—Unknown46.192, -123.931
Sand Island PlacerGold—Occurrence46.275, -124.021

Fossil collections

The Paleobiology Database lists 32 fossil collection records in Clatsop County. These are research records, not public dig sites.

Nearby counties

Tillamook County · Columbia County · Washington County · Multnomah County · Yamhill County

Oregon mineral guides

Back to all Oregon 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