House Range: Diopside & Garnet Rockhounding in Millard County, Utah

Plan your visit

Generally open to casual rockhounding

County

Millard County

State

Utah

Nearest road

Miller Canyon Road

Coordinates

39.16352, -113.37301

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.

Access note: BLM records active mining claims in this area. Collecting from inside an active claim needs the claim holder's permission.

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 House Range

Comfortable months (45 to 90°F highs)

Best months: March to November. Typical highs run 86°F in midsummer and 34°F in midwinter, with winter lows near 8°F. At about 7,040 ft, snow can block access from late fall well into spring, so check conditions outside of summer.

Climate normals: NOAA 1991-2020 monthlies, ESKDALE station (31 mi away), adjusted for elevation.

Geology at House Range

This spot sits on ground mapped as Big Horse Limestone Member of the Orr Formation that formed roughly 540 to 485 million years ago. Carbonate rock like this dissolves and weathers readily, so fresh road cuts, quarries, and creek exposures are typically the most productive ground.

Mapped unit

Big Horse Limestone Member of the Orr Formation

Age

540–485 Ma (Cambrian)

Elevation

7,040 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.

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