Monte Cristo: Arsenic & Arsenopyrite Rockhounding in Snohomish County, Washington

Public access10 mineralsSnohomish County, WashingtonUpdated June 2026

Minerals reported: 10
Best months: April to October

Monte Cristo is a mapped rockhounding spot in Snohomish County, Washington. Reported finds include arsenic, arsenopyrite, azurite, chalcopyrite, malachite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Plan your visit

Generally open to casual rockhounding

County: Snohomish County
State: Washington
Nearest road: Monte Cristo Trail
Coordinates: 47.98586, -121.39395

Get directions View on Google Maps

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

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.

Best time to visit Monte Cristo

35°J

39°F

44°M

51°A

59°M

62°J

70°J

70°A

64°S

51°O

40°N

34°D

Comfortable months (45 to 90°F highs)

Best months: April to October. Typical highs run 70°F in midsummer and 35°F in midwinter, with winter lows near 24°F.

Climate normals: NOAA 1991-2020 monthlies, BARING station (15 mi away), adjusted for elevation.

Today's weather

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The app shows live weather, recent rain, and a daily rockhounding score for Monte Cristo.

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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

Washington Geological Survey (DNR)
Stonerose Interpretive Center, Visit & rules
BLM Spokane District
Community submissions reviewed against published agency rules

Found at Monte Cristo

Each name 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 Monte Cristo.

Gold BarSnohomish County, Washington · 17 mi awayGold
Money CreekKing County, Washington · 20 mi awayGold
DarringtonSnohomish County, Washington · 21 mi awayGold
SultanSnohomish County, Washington · 21 mi awayGold
Granite FallsSnohomish County, Washington · 27 mi awayGold
Whitehorse TrailSnohomish County, Washington · 32 mi awayNephrite Jade
Deer CreekSkagit County, Washington · 35 mi awayNephrite Jade
Horseshoe Basin districtChelan County, Washington · 38 mi awayChalcopyrite, Galena

Monte Cristo FAQ

Where is Monte Cristo?+

Monte Cristo is in Snohomish County, Washington, at 47.98586, -121.39395. Nearest road: Monte Cristo Trail.

What rocks and minerals can you find at Monte Cristo?+

Monte Cristo is reported to produce Arsenic, Arsenopyrite, Azurite, Chalcopyrite, Malachite, Melaconite, Pyrite, Pyrrhotite, Realgar, Scorodite.

Is collecting allowed at Monte Cristo?+

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 Monte Cristo?+

A rock hammer, gloves, and safety glasses are enough for oxidized copper ground. Look for green and blue staining on weathered rock and in old dump piles.

When is the best time to visit Monte Cristo?+

The most comfortable months at Monte Cristo are April to October.

How do I get to Monte Cristo?+

Open the directions link to navigate to 47.98586, -121.39395 in Google Maps. The nearest road is Monte Cristo Trail.

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