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Waterloo quarry (Michels Materials Waterloo quarry; Portland Quarry), Dodge County, Wisconsin, USA i
Regional Level Types
Waterloo quarry (Michels Materials Waterloo quarry; Portland Quarry) Quarry
Dodge County County
Wisconsin State
USA Country

Regional Level Types
Waterloo quarry (Michels Materials Waterloo quarry; Portland Quarry)	Quarry
Dodge County	County
Wisconsin	State
USA	Country

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Tantalite-(Mn), etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Thulite, etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Thulite, etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Tantalite-(Mn), etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Thulite, etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Thulite, etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Tantalite-(Mn), etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Thulite, etc.

Waterloo quarry, Dodge County, Wisconsin, USA

Latitude & Longitude (WGS84):

43° 12' 43'' North , 88° 56' 57'' West

Latitude & Longitude (decimal):

Type:

Age:

1455 ± 5 Ma

Geologic Time:

Calymmian

Dating method:

Ar/Ar of muscovite

Reference for age:

Buchholz, Thomas W., Falster, Alexander U. and Simmons, Wm. B. (2016) Pegmatite Mineralogy of the Waterloo Quarry, Southern Wisconsin, USA. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Köppen climate type:

Dfa : Hot-summer humid continental climate

Nearest Settlements:

Place	Population	Distance
Waterloo	3,343 (2017)	4.5km
Marshall	3,927 (2017)	10.7km
Reeseville	687 (2017)	13.3km
Lake Mills	5,798 (2017)	14.9km
Milford	1,116 (2017)	14.9km

Nearest Clubs:
Local clubs are the best way to get access to collecting localities

Club	Location	Distance
Madison Gem and Mineral Club	Madison, Wisconsin	40km

Mindat Locality ID:

51657

Long-form identifier:

mindat:1:2:51657:7

GUID (UUID V4):

Large quarry east of Portland in Sec 33 & 34 T9N R13E. The quarry initially yielded large blocks for rip rap along Lake Michigan, but now produces stone for many different uses. It exposes primarily Proterozoic quartzite interbedded with meta-conglomerates and shale layers now metamorphosed to andalusite schist. The rock dates from the "Baraboo Interval", and was deposited between 1630 and 1750 Ma. The quartzite is cut by several generations of small igneous intrusions including metamorphosed and unmetamorphosed mafic dikes and granites, including complex pegmatites. One pegmatite has been dated at 1416 Ma. The metamorphism reached amphibolite grade here and likely represents the effects of the Mazatzal Orogeny from 1650-1630 Ma.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Dimension Stone

Mineral List

22 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

ⓘ Andalusite

Formula: Al₂(SiO₄)O

References:

Cordua, William S. (1998) Wisconsin Mineral Locality Index. Rocks & Minerals, 73 (6) 378-399 doi:10.1080/00357529809603078

ⓘ 'Apatite'

Formula: Ca₅(PO₄)₃(Cl/F/OH)

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ Beyerite

Formula: Ca(BiO)₂(CO₃)₂

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ 'Bismutomicrolite (of Hogarth 1977)'

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ 'Chlorite Group'

References:

Cordua, William S. (1998) Wisconsin Mineral Locality Index. Rocks & Minerals, 73 (6) 378-399 doi:10.1080/00357529809603078

ⓘ Chloritoid

Formula: Fe²⁺Al₂O(SiO₄)(OH)₂

References:

Cordua, William S. (1998) Wisconsin Mineral Locality Index. Rocks & Minerals, 73 (6) 378-399 doi:10.1080/00357529809603078

ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'

References:

ⓘ Columbite-(Mn)

Formula: Mn²⁺Nb₂O₆

References:

Buchholz, T., A. Falster, A. & W. Simmons (2003) The Waterloo quarry: a new location for gahnite, manganocolumbite and tantalite in southern Wisconsin: Rocks and Minerals78, (2): 118.

ⓘ 'Columbite-Tantalite'

References:

ⓘ 'Feldspar Group'

References:

Buchholz, T., A. Falster, A. & W. Simmons (2003) The Waterloo quarry: a new location for gahnite, manganocolumbite and tantalite in southern Wisconsin: Rocks and Minerals78, (2): 118.

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

ⓘ Gahnite

Formula: ZnAl₂O₄

References:

Buchholz, T., A. Falster, A. & W. Simmons (2003) The Waterloo quarry: a new location for gahnite, manganocolumbite and tantalite in southern Wisconsin: Rocks and Minerals78, (2): 118.

ⓘ Goethite

Formula: Fe³⁺O(OH)

Description: As replacements of pyrite and marcasite in overlying sediments.

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ Grayite ?

Formula: (Th,Pb,Ca)(PO₄) · H₂O

References:

Buchholz, T.W.. et al (2002) 29th Rochester Mineralogical Symposium, Abstracts of contributed papers, 6.

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

Buchholz, T.W.. et al (2002) 29th Rochester Mineralogical Symposium, Abstracts of contributed papers, 6.

ⓘ Kaolinite

Formula: Al₂(Si₂O₅)(OH)₄

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ Kettnerite

Formula: CaBiCO₃OF

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ 'Lepidolite'

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ 'Limonite'

References:

ⓘ Microcline

Formula: K(AlSi₃O₈)

References:

ⓘ 'Microlite Group'

Formula: A_2-mTa₂X_6-wZ_-n

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ 'Monazite Group'

Formula: REE(PO₄)

References:

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Cordua, William S. (1998) Wisconsin Mineral Locality Index. Rocks & Minerals, 73 (6) 378-399 doi:10.1080/00357529809603078

ⓘ Muscovite var. Lithian Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ Native Bismuth

Formula: Bi

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ Quartz

Formula: SiO₂

References:

Cordua, William S. (1998) Wisconsin Mineral Locality Index. Rocks & Minerals, 73 (6) 378-399 doi:10.1080/00357529809603078

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ 'Rhabdophane'

References:

ⓘ Spessartine

Formula: Mn²⁺₃Al₂(SiO₄)₃

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.

ⓘ 'Tantalite'

Formula: (Mn,Fe)(Ta,Nb)₂O₆

References:

ⓘ Tantalite-(Mn)

Formula: Mn²⁺Ta₂O₆

References:

Buchholz, T., A. Falster, A. & W. Simmons (2003) The Waterloo quarry: a new location for gahnite, manganocolumbite and tantalite in southern Wisconsin: Rocks and Minerals78, (2): 118.

ⓘ Thorite

Formula: Th(SiO₄)

References:

Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.