Rockhounding.org

UW 140

Grays Harbor County County, Washington
Directions
Next site in WashingtonUW 200 · 0.3 mi

Can I collect here?

Pro
See who owns this land and whether it is claimedPro shows the owner, the claim on this spot and every claim within a mile.
Read the collecting rules by land type

Based on our latest records, with claims updated from the BLM on Oct 9, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

0.3 miUW 200Fossil0.4 miUW 140Fossil0.6 miUW 145Fossil

More fossil sites in Washington

See them all

More sites in Washington

View all Washington sites
The Market

New on the Market

Native American arrowheadNative American arrowhead$20cubedmoons3Browse the Market

Found something here? List it for sale

About UW 140

UW 140 is a fossil collection site in Grays Harbor County, Washington, cataloged in the Paleobiology Database. The depositional environment is recorded as marine indet. Documented finds include Securella securis, Securella bisculpta, Diplodonta parilis, Mactromeris coalingensis, Mytilus (Mytilus) condoni, Acila (Truncacila) conradi.

Geologic setting

Geologic interval
Late Miocene
Age
11.63–5.333 Ma
Depositional environment
marine indet.
Recorded occurrences
9

Fossils found here

Securella securis
Bivalvia · Veneridae
Securella bisculpta
Bivalvia · Veneridae
Diplodonta parilis
Bivalvia · Ungulinidae
Mactromeris coalingensis
Bivalvia · Mactridae
Mytilus (Mytilus) condoni
Bivalvia · Mytilidae
Acila (Truncacila) conradi
Bivalvia · Nuculidae
Solena (Plectosolen) conradi
Bivalvia · Solenidae
Cryptonatica affinis
Gastropoda · Naticidae

Records and references

Data: Paleobiology Database collection 241293 (CC BY 4.0) — view the source record

Getting there

No directions yet.

How hard is it?

Getting there
– / 5
Finding anything
– / 5
Votes
0

Trip reports

No trip reports yet.

Questions about UW 140

Can you collect at UW 140?

It depends on who owns the land and whether a mining claim covers it. BLM land usually allows hand collecting for personal use, national parks allow none, and private land needs the owner’s permission. Pro members see the owner and any claims at this spot.

What minerals are found at UW 140?

Fossil.

Comments

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

No comments yet.

What to bring

The whole kit
  • Estwing E3-22P Rock PickThe industry-standard 22oz geological hammer. One-piece forged steel with shock-reduction grip.See it on AmazonCompare picks
  • Clear Anti-Fog Safety Glasses (4 Pack)Adjustable, anti-fog lenses for clear vision in any conditions.See it on AmazonCompare picks
  • Watertight Medical KitCompact, waterproof first aid kit with bandages, moleskin, and field essentials.See it on AmazonCompare picks
  • Northwest Treasure Hunter's Gem and Mineral GuideWhether you're digging for the first time or are an experienced rockhound or "prospector," with a simple rock hammer and...See it on Amazon

As an Amazon Associate we earn from qualifying purchases.

Source: Paleobiology Database.