Mexican Gulch: Agate & Apatite Rockhounding in Colfax County, New Mexico

Updated June 2026

Mexican Gulch is a mapped rockhounding spot in Colfax County, New Mexico. Reported finds include agate, apatite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Permission required
County: Colfax County
State: New Mexico
Nearest road: US 64
Coordinates: 36.53934, -105.14394

Geology at Mexican Gulch

This spot sits on intrusive rocks of intermediate to silicic composition, mapped as granitic and syenitic that formed roughly 56 to 3 million years ago. Plutonic rock like this weathers slowly into grus and boulders, and the most productive collecting is typically in weathered zones and drainages.

Mapped unit: intrusive rocks of intermediate to silicic composition
Age: 56–3 Ma (Eocene to Pliocene)
Rock types: granitic and syenitic
Elevation: 7,730 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 Mexican Gulch

Best months: March to November. Typical highs run 81°F in midsummer and 41°F in midwinter, with winter lows near 7°F. At about 7,730 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

Climate normals: NOAA 1991-2020 monthlies, EAGLE NEST station (7 mi away), adjusted for elevation.

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

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 Mexican Gulch

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 Mexican Gulch.

Mexican Gulch FAQ

Where is Mexican Gulch?+

Mexican Gulch is in Colfax County, New Mexico, at 36.53934, -105.14394. Nearest road: US 64.

What rocks and minerals can you find at Mexican Gulch?+

Mexican Gulch is reported to produce Agate, Apatite.

Is collecting allowed at Mexican Gulch?+

Permission required before collecting. Requires landowner or agency permission before any collecting. Do not enter without explicit authorization. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Mexican Gulch?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Mexican Gulch?+

The most comfortable months at Mexican Gulch are March to November. At about 7,730 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

How do I get to Mexican Gulch?+

Open the directions link to navigate to 36.53934, -105.14394 in Google Maps. The nearest road is US 64.

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