Unnamed Area (Yule Marble): Colorado Yule Marble Rockhounding in Pitkin County, Colorado

Quick details

Access

Public area

County

Pitkin County

State

Colorado

Nearest road

CO 133

Postcode

81623

Coordinates

39.12270, -107.26985

Geology at Unnamed Area (Yule Marble)

This spot sits on Mesaverde Fm, undivided, mapped as sandstone that formed roughly 100 to 66 million years ago. Sedimentary rock like this erodes unevenly, so the most productive collecting is typically along fresh cuts, badland slopes, and active drainages.

Mapped unit

Mesaverde Fm, undivided

Age

100–66 Ma (Late Cretaceous)

Rock types

sandstone

Elevation

7,470 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Unnamed Area (Yule Marble)

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

• Colorado Yule Marble