Cove Fort: Fluorite & Sulfur Rockhounding in Millard County, Utah

Quick details

Access

Permission required

County

Millard County

State

Utah

Coordinates

38.60797, -112.57185

Geology at Cove Fort

This spot sits on ground mapped as Volcanic rocks of Dog Valley that formed roughly 34 to 23 million years ago. Volcanic ground like this weathers into rocky slopes and float, and fresh exposures in cuts and drainages are usually the most productive places to look.

Mapped unit

Volcanic rocks of Dog Valley

Age

34–23 Ma (Oligocene)

Elevation

6,230 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 Cove Fort

Best months: February to November. Typical highs run 88°F in midsummer and 41°F in midwinter, with winter lows near 11°F.

Climate normals: NOAA 1991-2020 monthlies, FREMONT INDIAN SP station (13 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

• BLM Utah, Rockhounding overview
• Utah Geological Survey, collecting guidelines
• SITLA, surface use rules
• Community submissions reviewed against published agency rules

Found at Cove Fort

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

• FluoriteEncyclopedia →
• Sulfur