Sun City: Gypsum & Calcite Rockhounding in Barber County, Kansas

Quick details

Access

Public area

County

Barber County

State

Kansas

Nearest road

White Sands

Coordinates

37.35077, -98.94532

Geology at Sun City

This spot sits on Nippewalla Group, mapped as siltstone, sandstone, and shale that formed roughly 300 to 250 million years ago. Sedimentary rock like this erodes unevenly, so the most productive collecting is typically along fresh cuts, badland slopes, and active drainages.

Mapped unit

Nippewalla Group

Age

300–250 Ma (Permian)

Rock types

siltstone, sandstone, and shale

Elevation

1,880 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 Sun City

Best months: September to June. Typical highs run 93°F in midsummer and 46°F in midwinter, with winter lows near 16°F.

Climate normals: NOAA 1991-2020 monthlies, WILMORE 16SE station (16 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.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Sun City

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

• GypsumEncyclopedia →
• CalciteEncyclopedia →