Rockhounding.org

Riggs Quarry 15, Fruita (FMNH)

Mesa County, Colorado
Directions
Next site in ColoradoCallison Quarry #1, FPA · 2 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 3, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

Nearby sites

All of Colorado
2 miCallison Quarry #1, FPAFossil2 miEriksen Stegosaur, FPAFossil3 miKirkland Egg site, FPAFossil

More fossil sites in Colorado

See them all

More sites in Colorado

View all Colorado sites
The Market

New on the Market

Native American arrowheadNative American arrowhead$20cubedmoons3Browse the Market

Found something here? List it for sale

About Riggs Quarry 15, Fruita (FMNH)

Riggs Quarry 15, Fruita (FMNH) is a fossil collection site in Mesa, Colorado, cataloged in the Paleobiology Database. Fossils here come from the Morrison Formation, dated to the Kimmeridgian to Tithonian (154.8–143.1 million years ago). The depositional environment is recorded as levee. Documented finds include Brontosaurus excelsus, Diplodocus.

Geologic setting

Formation
Morrison
Geologic interval
Kimmeridgian to Tithonian
Age
154.8–143.1 Ma
Depositional environment
levee
Altitude
1402 meters
Recorded occurrences
2
Geology notes

overbank-levee in a well-drained floodplain

Locality notes

1.5 mi S of Fruita, Grand River Valley, Colorado. In NW 1/4, sec 29, T1N, R2W (Ute meridian)

Fossils found here

Brontosaurus excelsus
Saurischia · Diplodocidae
Diplodocus
Saurischia · Diplodocidae

Records and references

Data: Paleobiology Database collection 36576 (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 Riggs Quarry 15, Fruita (FMNH)

Can you collect at Riggs Quarry 15, Fruita (FMNH)?

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 Riggs Quarry 15, Fruita (FMNH)?

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
  • Southwest 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.