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Carmeuse Lime & Stone Inc. Quarry (Steetley Resources Inc. Quarry; J.E. Baker Co. Quarry), Millersville, Sandusky Co., Ohio, USAi
Regional Level Types
Carmeuse Lime & Stone Inc. Quarry (Steetley Resources Inc. Quarry; J.E. Baker Co. Quarry)Quarry
Millersville- not defined -
Sandusky Co.County

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Lock Map
Latitude & Longitude (WGS84):
41° 18' 50'' North , 83° 16' 50'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Helena221 (2017)3.2km
Burgoon170 (2017)5.7km
Kansas179 (2017)7.7km
Bettsville642 (2017)8.4km
Gibsonburg2,564 (2017)8.5km

An active quarry for aggregate currently operated by Carmuese Lime and Stone. The quarry is located in Jackson Township, sections 7 and 8. The bedrock has been identified as the Silurian Lockport Formation (Carlson, 1991, Carlson, 2015).

During World War I, the steel industry in the United States used magnesite that was imported from Austria. Since the United States was at war with the Central Powers, it could no longer import Austrian magnesite and turned to other sources. The J.E. Baker Company, founded by John E. Baker, began producing a “dead burned dolomite” which became a substitute for magnesite. This material was then marketed as “Magdolite” (Peckham, 1945).

As the demand for “Magdolite” grew, John Baker erected a new a plant in Millersville, Ohio in 1937 to produce more. John Baker passed away in 1941, but production of “Magdolite” continued during World War II. After Baker’s death the company was reorganized.

In 1984, Steetley Resources, Inc. acquired the Millersville operation from the J.E. Baker Company (1984). The Millersville Quarry was then acquired by the Carmuese Lime and Stone Co. after Steetley Resources, Inc. (Carlson, 2015)

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

8 valid minerals.

Detailed Mineral List:

Formula: CaCO3
Reference: Minerals of Ohio Bull. 69 ODNR
Formula: SrSO4
Reference: Minerals of Ohio Bull. 69 ODNR
Formula: PbCO3
Reference: Carlson, E.H. (2015) Minerals of Ohio: Ohio Department of Natural Resources, Bulletin 69, Second Edition: 169.
Formula: CaMg(CO3)2
Reference: Minerals of Ohio Bull. 69 ODNR
Formula: CaF2
Reference: Van King
Formula: PbS
Reference: Carlson, E.H. (2015) Minerals of Ohio. Ohio Department of Natural Resources, Bulletin 69: p. 190
Formula: NiS
Reference: Carlson, E.H. (2015) Minerals of Ohio. Ohio Department of Natural Resources, Bulletin 69: p. 220.
Formula: ZnS
Reference: Van King

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Group 3 - Halides
Group 5 - Nitrates and Carbonates
Group 7 - Sulphates, Chromates, Molybdates and Tungstates

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1

List of minerals for each chemical element

C CalciteCaCO3
C DolomiteCaMg(CO3)2
C CerussitePbCO3
O CalciteCaCO3
O DolomiteCaMg(CO3)2
O CelestineSrSO4
O CerussitePbCO3
F FluoriteCaF2
Mg DolomiteCaMg(CO3)2
S CelestineSrSO4
S SphaleriteZnS
S MilleriteNiS
S GalenaPbS
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
Ca FluoriteCaF2
Ni MilleriteNiS
Zn SphaleriteZnS
Sr CelestineSrSO4
Pb GalenaPbS
Pb CerussitePbCO3

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

251.902 - 541 Ma

ID: 3187973
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Ludlow - Llandovery
423 - 443.8 Ma

ID: 2720013
Lockport Dolomite

Age: Silurian (423 - 443.8 Ma)

Stratigraphic Name: Lockport Dolomite

Description: Dolomite, shades of white to medium gray, medium to massive bedded, fine to coarse crystalline; fossiliferous; vuggy.

Comments: Secondary unit description from USGS Lexicon website (ref. OH017) and OH005:Rock units forming the bedrock in the Maumee, Lucas Co., OH, and that crop out in the walls of a quarry are the Lockport Dolomite and the Greenfield Dolomite. The two form a thick reef complex roughly 600 m in diameter and about 68 m thick. The Lockport contains multistory stromatolite, thrombolite, and coral-microbialite reefs that were probably formed in a subtidal setting within a hypersaline lagoon. Lockport may be Wenlockian or Llandoverian to Ludlovian. In contrast to the mostly massive Lockport, the Greenfield at Maumee quarry is well bedded. It is Wenlockian, according to Shaver (1991), but fig. 16 of this report (after Howell, 1993) depicts the Greenfield as Llandoverian with a significant hiatus between deposition of the two units (Kahle, 1994). Original map source: Slucher, E.R., (principal compiler), Swinford, E.M., Larsen, G.E., and others, with GIS production and cartography by Powers, D.M., 2006, Bedrock geologic map of Ohio: Ohio Division of Geological Survey Map BG-1, version 6.0, scale 1:500,000.

Lithology: Major:{dolostone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Peckham, B.C. (1945) The story of a dynamic community, York, Pennsylvania, York Chamber of Congress, York, Pennsylvania: p. 117
United States Bureau of Mines (1984), Minerals Yearbook 1: 803.
Carlson, E.H. (2015) Minerals of Ohio. Ohio Department of Natural Resources, Bulletin 69: 290.
Vasichko, J.W. (2018) Fluorite of the Findlay Arch Mineral District, Ohio, Michigan and Indiana. Rocks and Minerals: 93(2): 110-119, 122.

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