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Bend deposit, Gilman, Taylor Co., Wisconsin, USAi
Regional Level Types
Bend depositDeposit
Gilman- not defined -
Taylor Co.County
WisconsinState
USACountry

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Key
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Latitude & Longitude (WGS84): 45° 17' 27'' North , 90° 35' 47'' West
Latitude & Longitude (decimal): 45.29083,-90.59639
GeoHash:G#: cbp9dkvwp
Locality type:Deposit
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Gilman397 (2017)21.5km
Whittlesey105 (2017)22.3km
Chelsea113 (2017)22.6km
Westboro190 (2017)24.5km
Lublin116 (2017)25.8km


Copper and gold enriched massive sulfide deposit known from cores located northeast of Gilman (Sec 2 T32N R2W). About 100-120 feet of glacial sediments cover the deposit, which was discovered in 1985 based in exploring a surveyed electromagnetic anomaly. The deposit consists of a massive sulfide lenses with a stockwork-stringer zone. Those occur associated with a felsic volcanic zone associated with a back arc basin. This was severely deformed and metamorphosed during the 1.8 billion year old Penokean Orogeny.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Bornite
Formula: Cu5FeS4
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Calaverite
Formula: AuTe2
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Calcite
Formula: CaCO3
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Chalcocite
Formula: Cu2S
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Chalcopyrite
Formula: CuFeS2
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
'Chlorite Group'
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Hematite
Formula: Fe2O3
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Krennerite
Formula: Au3AgTe8
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Petzite
Formula: Ag3AuTe2
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Pyrite
Formula: FeS2
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Quartz
Formula: SiO2
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Tennantite
Formula: Cu6[Cu4(Fe,Zn)2]As4S13
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Bornite2.BA.15Cu5FeS4
Calaverite2.EA.10AuTe2
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Krennerite2.EA.15Au3AgTe8
Petzite2.BA.75Ag3AuTe2
Pyrite2.EB.05aFeS2
Tennantite2.GB.05Cu6[Cu4(Fe,Zn)2]As4S13
Tetrahedrite2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
Petzite2.4.3.3Ag3AuTe2
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Calaverite2.12.13.2AuTe2
Krennerite2.12.13.1Au3AgTe8
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tennantite3.3.6.2Cu6[Cu4(Fe,Zn)2]As4S13
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O CalciteCaCO3
O QuartzSiO2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O HematiteFe2O3
O MuscoviteKAl2(AlSi3O10)(OH)2
AlAluminium
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S PyriteFeS2
S ChalcopyriteCuFeS2
S BorniteCu5FeS4
S ChalcociteCu2S
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
S TennantiteCu6[Cu4(Fe,Zn)2]As4S13
S ArsenopyriteFeAsS
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
FeIron
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe BorniteCu5FeS4
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Fe ArsenopyriteFeAsS
Fe HematiteFe2O3
CuCopper
Cu ChalcopyriteCuFeS2
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Cu TennantiteCu6[Cu4(Fe,Zn)2]As4S13
ZnZinc
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AsArsenic
As TennantiteCu6[Cu4(Fe,Zn)2]As4S13
As ArsenopyriteFeAsS
AgSilver
Ag PetziteAg3AuTe2
Ag KrenneriteAu3AgTe8
SbAntimony
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
TeTellurium
Te CalaveriteAuTe2
Te PetziteAg3AuTe2
Te KrenneriteAu3AgTe8
AuGold
Au CalaveriteAuTe2
Au PetziteAg3AuTe2
Au KrenneriteAu3AgTe8

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
1600 - 2500 Ma



ID: 2960582
Metagabbro

Age: Proterozoic (1600 - 2500 Ma)

Description: Mafic to ultramafic bodies defined and delineated principally by positive magnetic and gravity anomalies; includes diorite bodies. Comagmatic with unit Xmi

Comments: Pembine-Wausau terrane 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:{metagabbro}, Minor:{ultramafic}, Incidental:{diorite}

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]

Statherian - Paleoproterozoic
1600 - 2500 Ma



ID: 3185191
Paleoproterozoic intrusive rocks

Age: Proterozoic (1600 - 2500 Ma)

Comments: Pembine-Wasau Terrane

Lithology: Intrusive igneous 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]

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)
DeMatties, T. & W. Rowell (1996) The Bend Deposit: an early Proterozoic copper-gold VMS deposit: in LaBerge, G. L., Ed., Volcanogenic massive sulfide deposits of northern Wisconsin: A commemorative volume: Institute on Lake Superior Geology Proceedings, 42nd Annual Meeting, Cable, WI, v. 42, part 2: 143-159.
Cordua, William (1998) Wisconsin Mineral Locality Index: Rocks & Minerals: 73: 378-399.


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