Reference: Grant, U. S. (1901), Preliminary report on the copper-bearing rocks of Douglas County, Wisconsin, 2nd Ed.: Wisconsin Geological and Natural History Survey Bull. VI Economic Series #3, 83 p.

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Copper	1.AA.05	Cu
Group 5 - Nitrates and Carbonates
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 9 - Silicates
ⓘ	Laumontite	9.GB.10	CaAl₂Si₄O₁₂ · 4H₂O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
ⓘ	Copper	1.1.1.3	Cu
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
ⓘ	Malachite	16a.3.1.1	Cu₂(CO₃)(OH)₂
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
ⓘ	Laumontite	77.1.1.4	CaAl₂Si₄O₁₂ · 4H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	Carbon
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	Oxygen
O	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Al	Aluminium
Al	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Si	Silicon
Si	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Ca	Calcium
Ca	ⓘ Laumontite	CaAl₂Si₄O₁₂ · 4H₂O
Cu	Copper
Cu	ⓘ Copper	Cu
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂

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

Mesoproterozoic

1000 - 1600 Ma

ID: 2790923

Chengwatana Volcanic Group

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Chengwatana Volcanic Group

Description: Gray basalt flows, interflow breccia, tuff, and minor sedimentary rocks

Comments: This group has U-Pb zircon ages ranging from about 1094.6 +/- 2.1 Ma from a rhyolite near Lake Nelson, WI (Zartman and others, 1997, U-Th-Pb zircon ages of some Keweenawan Supergroup rocks from the south shore of Lake Superior: Canadian Journal of Earth Sciences, v. 34, p. 549-561) to 1100-1102 +/- 5 Ma elsewhere in the unit (G. Garrels, Univ. of Arizona, unpublished data, 2000; M. Schmidt, MIT, unpublished data, 2000). 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:{basalt}

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]

Mesoproterozoic

1000 - 1600 Ma

ID: 3190266

Mesoproterozoic volcanic rocks

Age: Mesoproterozoic (1000 - 1600 Ma)

Comments: Mid-Continent Rift

Lithology: Bimodal 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]

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

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)

Grant, U. S. (1901), Preliminary report on the copper-bearing rocks of Douglas County, Wisconsin, 2nd Ed.: Wisconsin Geological and Natural History Survey Bull. VI Economic Series #3, 83 p.

Dutton, C. E. (1972) Sampling of Copper-bearing Keweenawan Rocks of Northwestern Wisconsin: U.S. Geological Survey Open File Report 9.1267, 13p.

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North Wisconsin prospect, Douglas Co., Wisconsin, USAiRegional Level TypesNorth Wisconsin prospectPit (Abandoned) Douglas Co.County WisconsinState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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