Sapillo Creek: Geode Digging in Grant County, New Mexico

Updated June 2026

Sapillo Creek is a mapped rockhounding spot in Grant County, New Mexico. Reported finds include geode, carnelian. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Grant County
State: New Mexico
Nearest road: Sapillo Loop Road
Postcode: 88061
Coordinates: 33.03449, -108.18709

Geology at Sapillo Creek

This spot sits on Lower-upper middle Tertiary basaltic andesites and andesites of the Mogollon Group, mapped as andesite, basaltic andesite, and basalt that formed roughly 34 to 23 million years ago. Volcanic rock like this is classic geode and thunderegg country: gas cavities in the old flows can line themselves with quartz or agate over time.

Mapped unit: Lower-upper middle Tertiary basaltic andesites and andesites of the Mogollon Group
Age: 34–23 Ma (Early Oligocene to Late Oligocene)
Rock types: andesite, basaltic andesite, and basalt
Elevation: 5,930 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 Sapillo Creek

Conditions here are workable year-round, with typical highs from 56°F in winter to 88°F in summer.

Climate normals: NOAA 1991-2020 monthlies, GILA HOT SPRINGS station (11 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.

State guidance last verified: April 1, 2026

Rockhound State Park — Collection rules
BLM New Mexico
New Mexico Bureau of Geology and Mineral Resources
Community submissions reviewed against published agency rules

Found at Sapillo Creek

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

Nearby rockhounding spots

Other rockhounding spots within driving distance of Sapillo Creek.

Across the state line from Sapillo Creek

Sapillo Creek is close enough to the New Mexico border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Sapillo Creek FAQ

Where is Sapillo Creek?+

Sapillo Creek is in Grant County, New Mexico, at 33.03449, -108.18709. Nearest road: Sapillo Loop Road.

What rocks and minerals can you find at Sapillo Creek?+

Sapillo Creek is reported to produce Geode, Carnelian.

Is collecting allowed at Sapillo Creek?+

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 Sapillo Creek?+

Bring a crack hammer, a chisel, safety glasses, and a bucket. Candidates are rounder and lighter than solid rock; a soil pipe cutter opens them cleaner than a flat smash.

When is the best time to visit Sapillo Creek?+

Sapillo Creek is workable year-round.

How do I get to Sapillo Creek?+

Open the directions link to navigate to 33.03449, -108.18709 in Google Maps. The nearest road is Sapillo Loop Road.

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