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Trowbridge-Nott Talc Mine, Wood Co., Wisconsin, USAi
Regional Level Types
Trowbridge-Nott Talc MineMine
Wood Co.County
WisconsinState
USACountry

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Lock Map
Trowbridge-Nott Talc Mine site - 2017

Trowbridge-Nott Talc Mine, Wood Co., Wisconsin, USA
Trowbridge-Nott Talc Mine site - 2017

Trowbridge-Nott Talc Mine, Wood Co., Wisconsin, USA
Trowbridge-Nott Talc Mine site - 2017

Trowbridge-Nott Talc Mine, Wood Co., Wisconsin, USA
Latitude & Longitude (WGS84): 44° 39' 50'' North , 89° 53' 6'' West
Latitude & Longitude (decimal): 44.66389,-89.88500
GeoHash:G#: dpbn4dgdp
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Milladore275 (2017)7.1km
Sherry800 (2017)9.2km
Auburndale673 (2017)10.5km
Junction City431 (2017)12.4km
Knowlton120 (2017)17.0km


Pit and shaft were worked in 1928-1930 by the American Talc company. Locality is now protected as part of the George W. Mead Wildlife area. Sec 11 T25N R5E. Pit is filled with water, some small dump piles are accessible in nearby woods.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


12 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Brucite
Formula: Mg(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Chalcopyrite
Formula: CuFeS2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
'Chlorite Group'
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Dolomite
Formula: CaMg(CO3)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Goethite
Formula: α-Fe3+O(OH)
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Pyrite
Formula: FeS2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Talc
Formula: Mg3Si4O10(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Brucite4.FE.05Mg(OH)2
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Dolomite5.AB.10CaMg(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Anthophyllite9.DD.05☐{Mg2}{Mg5}(Si8O22)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
X(OH)2
Brucite6.2.1.1Mg(OH)2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Anthophyllite66.1.2.1☐{Mg2}{Mg5}(Si8O22)(OH)2
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3Si4O10(OH)2
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Chlorite Group'-
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
H AzuriteCu3(CO3)2(OH)2
H BruciteMg(OH)2
H Goethiteα-Fe3+O(OH)
H MalachiteCu2(CO3)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H TalcMg3Si4O10(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C AzuriteCu3(CO3)2(OH)2
C DolomiteCaMg(CO3)2
C MalachiteCu2(CO3)(OH)2
OOxygen
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
O AzuriteCu3(CO3)2(OH)2
O BruciteMg(OH)2
O DolomiteCaMg(CO3)2
O Goethiteα-Fe3+O(OH)
O MagnetiteFe2+Fe23+O4
O MalachiteCu2(CO3)(OH)2
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O TalcMg3Si4O10(OH)2
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Mg BruciteMg(OH)2
Mg DolomiteCaMg(CO3)2
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg TalcMg3Si4O10(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si TalcMg3Si4O10(OH)2
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
SSulfur
S ChalcopyriteCuFeS2
S PyriteFeS2
CaCalcium
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca DolomiteCaMg(CO3)2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

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 Macrostrat.org

Paleoproterozoic - Archean
1600 - 4000 Ma



ID: 2711668
Ultramafic rocks

Age: Precambrian (1600 - 4000 Ma)

Description: Talc-serpentine schist, metapyroxenite and metaperidotite

Reference: Brown, B.A., J.K. Greenberg. Bedrock Geology of Wood County, Wisconsin. Wisconsin Geological and Natural History Survey. [134]

Statherian
1600 - 1800 Ma



ID: 3184827
Paleoproterozoic volcanic rocks

Age: Statherian (1600 - 1800 Ma)

Lithology: Volcanic 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]

Orosirian
1800 - 2050 Ma



ID: 2790906
Milladore Volcanic Complex

Age: Orosirian (1800 - 2050 Ma)

Stratigraphic Name: Milladore Volcanic Complex

Description: Succession of poorly exposed interlayered metavolcanic and metasedimentary rocks. Lithic units described in Sims (1990)

Comments: Marshfield terrane. Sims, P.K., 1990, Geologic map of Precambrian rocks of Eau Claire and Green Bay 1o x 2o quadrangles, central Wisconsin: U.S. Geological Survey Miscellaneous Investigations Series Map I- 1925, scale 1:250,000 Original map source: Cannon, W.F., Kress, T.H., Sutphin, D.M., Morey, G.B., Meints, Joyce, and Barber-Delach, Robert, 1997, Digital Geologic Map and mineral deposits of the Lake Superior Region, Minnesota, Wisconsin, Michigan: USGS Open-File Report 97-455 (version 3, Nov. 19

Lithology: Major:{metasedimentary,metavolcanic}

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 Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Aldrich, H. R. (1928) A trip to Milladore and vicinity, Wisconsin Geologic and Natural History Survey: Open File Report: 28-4: 5 p.
Shaw, C.W. (1942) The talc deposit near Milladore, Wisconsin: Wisconsin Geologic and Natural History Survey: Open File Report 42-1: 25 p.
U. S. Geological Survey (1976) Mineral and Water Resources of Wisconsin 185 p.
Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73(6): 378 - 399.


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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