Rockhounding.org

Milwaukee Metropolitan Sewerage District Dropshafts KK-1 and LM-S, Racine Fm., W

Milwaukee County, Wisconsin
Directions
Next site in WisconsinEstabrook Park · 4 mi

Can I collect here?

Pro
See who owns this land and whether it is claimedPro shows the owner, the claim on this spot and every claim within a mile.
Read the collecting rules by land type

Based on our latest records, with claims updated from the BLM on Oct 3, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

4 miEstabrook ParkGeode, millerite6 miBumastus (Cybantyx) cuniculus Subassociation, Schoonmaker Quarry, WauwatosaFossil19 miRacineFossil, calcite, marcasite

More fossil sites in Wisconsin

See them all

More sites in Wisconsin

View all Wisconsin sites
The Market

New on the Market

Native American arrowheadNative American arrowhead$20cubedmoons3Browse the Market

Found something here? List it for sale

About Milwaukee Metropolitan Sewerage District Dropshafts KK-1 and LM-S, Racine Fm., W

Milwaukee Metropolitan Sewerage District Dropshafts KK-1 and LM-S, Racine Fm., W is a fossil collection site in Milwaukee, Wisconsin, cataloged in the Paleobiology Database. Fossils here come from the Racine Formation, dated to the Wenlock (432.9–426.7 million years ago). The depositional environment is recorded as offshore shelf and the tectonic setting is cratonic basin. Documented finds include Lithistida, Hexactinellida, Heteractinida, Thalassinoides, Palaeophycus, Chondrites.

Geologic setting

Formation
Racine
Geologic interval
Wenlock
Age
432.9–426.7 Ma
Depositional environment
offshore shelf
Tectonic setting
cratonic basin
Recorded occurrences
29
Geology notes

"Bioturbated dolomite mudstone."

Fossils found here

Lithistida
Demospongiae
Hexactinellida
Hexactinellida
Heteractinida
Heteractinida
Thalassinoides
NO_CLASS_SPECIFIED · NO_FAMILY_SPECIFIED
Palaeophycus
NO_CLASS_SPECIFIED · NO_FAMILY_SPECIFIED
Chondrites
NO_CLASS_SPECIFIED · NO_FAMILY_SPECIFIED
Planolites
NO_CLASS_SPECIFIED · NO_FAMILY_SPECIFIED
Ischadites
Chlorophyceae · Receptaculitidae
Skenidioides
Rhynchonellata · Skenidiidae
Dicoelosia
Rhynchonellata · Dicoelosiidae
Resserella
Rhynchonellata · Dalmanellidae
Isorthis
Rhynchonellata · Dalmanellidae
Dalejina
Rhynchonellata · Rhipidomellidae
Leangella
Strophomenata · Leptestiidae
Plectodonta
Strophomenata · Sowerbyellidae
Leptaena
Strophomenata · Rafinesquinidae
Antirhynchonella
Rhynchonellata · Clorindidae
Atrypina
Rhynchonellata · Atrypinidae
Nucleospira
Rhynchonellata · Nucleospiridae
Eospirifer
Rhynchonellata · Cyrtiidae
Foraminifera
Foraminifera
Tabulata
Anthozoa
Rugosa
Anthozoa
Bryozoa
Bryozoa
Machaeridia
Polychaeta
Serpulimorpha
Polychaeta
Gastropoda
Gastropoda
Trilobita
Trilobita
Crinoidea
Crinoidea

Records and references

Data: Paleobiology Database collection 688 (CC BY 4.0) — view the source record

Getting there

No directions yet.

How hard is it?

Getting there
– / 5
Finding anything
– / 5
Votes
0

Trip reports

No trip reports yet.

Questions about Milwaukee Metropolitan Sewerage District Dropshafts KK-1 and LM-S, Racine Fm., W

Can you collect at Milwaukee Metropolitan Sewerage District Dropshafts KK-1 and LM-S, Racine Fm., W?

It depends on who owns the land and whether a mining claim covers it. BLM land usually allows hand collecting for personal use, national parks allow none, and private land needs the owner’s permission. Pro members see the owner and any claims at this spot.

What minerals are found at Milwaukee Metropolitan Sewerage District Dropshafts KK-1 and LM-S, Racine Fm., W?

Fossil.

Comments

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

No comments yet.

What to bring

The whole kit
  • Estwing E3-22P Rock PickThe industry-standard 22oz geological hammer. One-piece forged steel with shock-reduction grip.See it on AmazonCompare picks
  • Clear Anti-Fog Safety Glasses (4 Pack)Adjustable, anti-fog lenses for clear vision in any conditions.See it on AmazonCompare picks
  • Watertight Medical KitCompact, waterproof first aid kit with bandages, moleskin, and field essentials.See it on AmazonCompare picks
  • Rocks & Minerals of Wisconsin, Illinois & IowaIdentify and collect rocks and minerals with the perfect guide to the Heartland. With this famous field guide by Dan R. ...See it on Amazon

As an Amazon Associate we earn from qualifying purchases.

Meteorite nearbyA 505 kg iron meteorite was found at Trenton in 1858, 25 miles from here.

Source: Paleobiology Database.