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Stevens Point, Portage Co., Wisconsin, USAi
Regional Level Types
Stevens PointPoint
Portage Co.County
WisconsinState
USACountry

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05604960015557759004703.jpg
Gneiss

Stevens Point, Portage Co., Wisconsin, USA
05604960015557759004703.jpg
Gneiss

Stevens Point, Portage Co., Wisconsin, USA
05604960015557759004703.jpg
Gneiss

Stevens Point, Portage Co., Wisconsin, USA
Latitude & Longitude (WGS84):
44° 29' 9'' North , 89° 34' 29'' West
Latitude & Longitude (decimal):
44.48596,-89.57491
GeoHash:
G#: dpbm1dmt9
GRN:
N30W47
Locality type:
Point
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Whiting1,727 (2017)1.5km
Plover12,319 (2017)4.1km
Stevens Point26,604 (2017)4.2km
Park Ridge504 (2017)4.4km
Polonia526 (2017)15.9km


Outcrops of highly deformed Archean and Proterozoic igneous and metamorphic rocks are exposed along the Wisconsin River at Stevens Point, most notably at Conant's Rapids. Here tonalitic gneisses are intruded by meta-basalts, now amphibolites, and numerous granitic aplites and pegmatites.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 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:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Reference: Gems and Minerals of America- Jay Ellis Ransom-1974
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Chalcopyrite
Formula: CuFeS2
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ 'Hornblende'
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ 'K Feldspar'
Formula: KAlSi3O8
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Pyrite
Formula: FeS2
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Quartz
Formula: SiO2
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Titanite
Formula: CaTi(SiO4)O
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.
β“˜ Zircon
Formula: Zr(SiO4)
Reference: Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
Group 9 - Silicates
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
β“˜'Hornblende'-
β“˜'K Feldspar'-KAlSi3O8
β“˜'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

HHydrogen
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hβ“˜ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oβ“˜ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Oβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Oβ“˜ K FeldsparKAlSi3O8
Oβ“˜ QuartzSiO2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
NaSodium
Naβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
AlAluminium
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alβ“˜ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Alβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Alβ“˜ K FeldsparKAlSi3O8
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siβ“˜ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Siβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Siβ“˜ K FeldsparKAlSi3O8
Siβ“˜ QuartzSiO2
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ PyriteFeS2
KPotassium
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Kβ“˜ K FeldsparKAlSi3O8
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Caβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiβ“˜ TitaniteCaTi(SiO4)O
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ PyriteFeS2
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Maass, R. S. (1986) Penokean deformation and metamorphism in central Wisconsin: volcanic rocks and gneisses: Wisconsin Geological and Natural History Survey: field trip guidebook prepared for the 32nd annual meeting of the Institute on Lake Superior Geology: 8-10.

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