RockWoof
Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Sketch map

Drill Hole (Past Producer)Occurrence (Past Producer)Occurrence (Past Producer)Occurrence (Past Producer)Occurrence (Past Producer)Drill Hole (Past Producer)Drill Hole (Past Producer)
Past ProducerProducerProspectOccurrenceStatus unknown
7 paw pins, one per site. Hover or tap a pin for the site name. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Field cards: what kind of sites?

7
Past Producer

Produced ore or material at some point in the past.

Status terms come from USGS MRDS records.

Minerals recorded here

Sphalerite 7

Commodities

Zinc 7

Sites

SiteCommodityMinerals recordedStatusApprox. location
OccurrenceZincSphaleritePast Producer41.226, -92.800
Drill HoleZincSphaleritePast Producer41.246, -92.611
OccurrenceZincSphaleritePast Producer41.227, -92.786
Drill HoleZincSphaleritePast Producer41.175, -92.579
OccurrenceZincSphaleritePast Producer41.285, -92.750
OccurrenceZincSphaleritePast Producer41.196, -92.760
Drill HoleZincSphaleritePast Producer41.245, -92.859

Fossil collections

The Paleobiology Database lists 1 fossil collection records in Mahaska County. These are research records, not public dig sites.

Nearby counties

Monroe County · Wapello County · Lucas County · Marion County · Jasper County

Iowa mineral guides

Back to all Iowa counties.

Related articles

How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.

Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.

Updated