Big Four Fault: Anglesite & Cerussite Rockhounding in Crittenden County, Kentucky
- Minerals reported
- 7
- Elevation
- 520 ft
- Best months
- February to December
Big Four Fault is a mapped rockhounding spot in Crittenden County, Kentucky. Reported finds include anglesite, cerussite, fluorite, galena, pyromorphite, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.
Plan your visit
Generally open to casual rockhounding
- County
- Crittenden County
- State
- Kentucky
- Nearest road
- KY 297
- Postcode
- 42064
- Coordinates
- 37.34972, -88.19261
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 Big Four Fault
Comfortable months (45 to 90°F highs)
Best months: February to December. Typical highs run 86°F in midsummer and 41°F in midwinter, with winter lows near 22°F.
Climate normals: NOAA 1991-2020 monthlies, ELIZABETHTOWN station (9 mi away), adjusted for elevation.
Geology at Big Four Fault
This spot sits on St. Louis and Salem Limestones, mapped as limestone that formed roughly 360 to 325 million years ago. Carbonate rock like this is the classic host for lead, zinc, and fluorite mineralization, which typically follows old cavities and replacement zones.
- Mapped unit
- St. Louis and Salem Limestones
- Age
- 360–325 Ma (Mississippian)
- Rock types
- limestone
- Elevation
- 520 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.
Today's weather
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Get the appSources & 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.
- Kentucky Geological Survey
- Ben E. Clement Mineral Museum
- Daniel Boone National Forest
- Community submissions reviewed against published agency rules
Found at Big Four Fault
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 Big Four Fault.
- Crittenden CountyCrittenden County, Kentucky · 2 mi awayGalena, Fluorite, Barite
- CarrsvilleLivingston County, Kentucky · 9 mi awayCalcite, Fluorite, Quartz
- FredoniaCrittenden County, Kentucky · 10 mi awayBarite
- BirdsvilleLivingston County, Kentucky · 14 mi awayCalcite, Dolomite, Fluorite
- CriderCaldwell County, Kentucky · 16 mi awayFluorite
- EddyvilleLyon County, Kentucky · 21 mi awayAgate, Chalcedony, Jasper
- Kentucky Dam Village State ParkMarshall County, Kentucky · 24 mi awayFort Payne Chert
- PrincetonCaldwell County, Kentucky · 26 mi awayCalcite, Fluorite
Across the state line from Big Four Fault
Big Four Fault is close enough to the Kentucky border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.
- ElizabethtownHardin County, Illinois · 9 mi awayAragonite
- RosiclareHardin County, Illinois · 10 mi awayCalcite, Blue Fluorite, Yellow Fluorite
- Cave-In RockHardin County, Illinois · 11 mi awayBarite, Calcite, Cerussite
- Minerva Mine AreaHardin County, Illinois · 14 mi awayAlstonite, Barite, Strontianite
- ThebesAlexander County, Illinois · 69 mi awayAgate, Jasper
- FayvilleAlexander County, Illinois · 70 mi awayAgate, Jasper, Diamond
Big Four Fault FAQ
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More rockhounding in Kentucky
See all 37 Kentucky spots →
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