Chalk Creek gravels: Sapphire Rockhounding in Chaffee County, Colorado

Updated June 2026

Chalk Creek gravels is a mapped rockhounding spot in Chaffee County, Colorado. Reported finds include sapphire. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Chaffee County
State: Colorado
Nearest road: Chalk Creek Drive
Postcode: 81236
Coordinates: 38.71381, -106.22783

Geology at Chalk Creek gravels

This spot sits on ground mapped as Fan deposits that formed within roughly the last 129,000 years. Hard resistant minerals typically weather out of the bedrock and concentrate in nearby soils and creek gravels.

Mapped unit: Fan deposits
Age: < 1 Ma (Late Pleistocene to Holocene)
Elevation: 8,700 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.

Best time to visit Chalk Creek gravels

Best months: March to November. Typical highs run 81°F in midsummer and 38°F in midwinter, with winter lows near 8°F. At about 8,700 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

Climate normals: NOAA 1991-2020 monthlies, BUENA VISTA 2S station (9 mi away), adjusted for elevation.

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 Chalk Creek gravels

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

Sapphire Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Chalk Creek gravels.

Chalk Creek gravels FAQ

Where is Chalk Creek gravels?+

Chalk Creek gravels is in Chaffee County, Colorado, at 38.71381, -106.22783. Nearest road: Chalk Creek Drive.

What rocks and minerals can you find at Chalk Creek gravels?+

Chalk Creek gravels is reported to produce Sapphire.

Is collecting allowed at Chalk Creek gravels?+

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. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Chalk Creek gravels?+

A rock hammer, a sieve, and a small shovel work well for garnet-type minerals, which concentrate as resistant grains in soils and creek gravels.

When is the best time to visit Chalk Creek gravels?+

The most comfortable months at Chalk Creek gravels are March to November. At about 8,700 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

How do I get to Chalk Creek gravels?+

Open the directions link to navigate to 38.71381, -106.22783 in Google Maps. The nearest road is Chalk Creek Drive.

More rockhounding in Colorado

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Open Chalk Creek gravels on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.