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

Wausau Area (Occurrence)Rib Mountain Quarry (Producer)Anderson Brothers and Johnson Co. + 1 more nearby (Past Producer)Cold Spring Wausau Quarry + 1 more nearby (Producer)Bens Stone Quarry (Past Producer)Wisconsin Rose Red (Producer)Ellis Corporation (Past Producer)Reef Gold Deposit (Prospect)
Past ProducerProducerProspectOccurrenceStatus unknown
8 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

Reef Gold Deposit

We picked it because its USGS record mentions 1 gem or collectible mineral (Gold) and 2 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as prospect for Gold. Minerals mentioned: Gold, Pyrite. Approx. location 44.967, -89.350. USGS record.

Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.

Field cards: what kind of sites?

5
Producer

Was producing when the record was made.

3
Past Producer

Produced ore or material at some point in the past.

1
Prospect

Explored or test-dug, with no recorded production.

1
Occurrence

The mineral was noted here, without development.

Status terms come from USGS MRDS records.

Mineral cards

Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.

Minerals recorded here

Chalcopyrite 1Gold 1Pyrrhotite 1

Commodities

Granite 6Flagstone 2Gold 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Reef Gold DepositGoldChalcopyrite, Gold, PyrrhotiteProspect44.967, -89.350
Rib Mountain QuarryGranite—Producer45.089, -89.679
Wausau Area——Occurrence44.981, -89.779
Anderson Brothers and Johnson Co.Granite—Past Producer45.068, -89.641
Cold Spring Wausau QuarryGranite—Producer45.035, -89.545
Red Granite QuarryGranite—Producer45.047, -89.553
Ellis CorporationFlagstone—Past Producer44.711, -89.507
Wisconsin Rose RedGranite—Producer45.039, -89.507
Ruby Red QuarryGranite—Producer45.071, -89.663
Bens Stone QuarryFlagstone—Past Producer44.712, -89.529

Fossil collections

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

Nearby counties

Lincoln County · Wood County · Clark County · Oneida County · Forest County

Wisconsin mineral guides

Back to all Wisconsin 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