SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Allegan, Allegan Co., Michigan, USAi
Regional Level Types
Allegan- not defined -
Allegan Co.County
MichiganState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 42° 31' 45'' North , 85° 51' 19'' West
Latitude & Longitude (decimal): 42.52920,-85.85530
GeoHash:G#: dpdcyq4nd
Köppen climate type:Dfb : Warm-summer humid continental climate


An incorporated populated place.

Regions containing this locality

North America Plate

Plate - 4,950 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

14 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Albite-Anorthite Series'
Chromite
Formula: Fe2+Cr3+2O4
Copper
Formula: Cu
Daubréelite
Formula: Fe2+Cr3+2S4
Diopside
Formula: CaMgSi2O6
Enstatite
Formula: MgSiO3
Enstatite var: Bronzite
Formula: (Mg,Fe2+)2[SiO3]2
'Fayalite-Forsterite Series'
Gold
Formula: Au
'H5 chondrite meteorite'
Iron
Formula: Fe
Iron var: Kamacite
Formula: (Fe,Ni)
Isocubanite
Formula: CuFe2S3
Mackinawite
Formula: (Fe,Ni)9S8
Merrillite
Formula: Ca9NaMg(PO4)7
'Orthopyroxene Subgroup'
'Plessite'
Spinel
Formula: MgAl2O4
Taenite
Formula: (Fe,Ni)
Tetrataenite
Formula: FeNi
Troilite
Formula: FeS

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Gold1.AA.05Au
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Tetrataenite1.AE.10FeNi
Group 2 - Sulphides and Sulfosalts
Daubréelite2.DA.05Fe2+Cr3+2S4
Isocubanite2.CB.55bCuFe2S3
Mackinawite2.CC.25(Fe,Ni)9S8
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Spinel4.BB.05MgAl2O4
Group 8 - Phosphates, Arsenates and Vanadates
Merrillite8.AC.45Ca9NaMg(PO4)7
Group 9 - Silicates
Diopside9.DA.15CaMgSi2O6
Enstatite9.DA.05MgSiO3
var: Bronzite9.DA.05(Mg,Fe2+)2[SiO3]2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
Fayalite-Forsterite Series-
H5 chondrite meteorite-
Orthopyroxene Subgroup-
Plessite-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Gold1.1.1.1Au
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Taenite1.1.11.2(Fe,Ni)
Tetrataenite1.1.11.3FeNi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Mackinawite2.7.2.1(Fe,Ni)9S8
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 1:1
Isocubanite2.9.13.3CuFe2S3
AmBnXp, with (m+n):p = 3:4
Daubréelite2.10.1.11Fe2+Cr3+2S4
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Spinel7.2.1.1MgAl2O4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
(AB)3(XO4)2
Merrillite38.3.4.4Ca9NaMg(PO4)7
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Enstatite65.1.2.1MgSiO3
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
Enstatite
var: Bronzite
-(Mg,Fe2+)2[SiO3]2
'Fayalite-Forsterite Series'-
'H5 chondrite meteorite'-
Iron-Fe
'Orthopyroxene Subgroup'-
'Plessite'-

List of minerals for each chemical element

OOxygen
O Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
O ChromiteFe2+Cr23+O4
O DiopsideCaMgSi2O6
O EnstatiteMgSiO3
O MerrilliteCa9NaMg(PO4)7
O SpinelMgAl2O4
NaSodium
Na MerrilliteCa9NaMg(PO4)7
MgMagnesium
Mg Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
Mg DiopsideCaMgSi2O6
Mg EnstatiteMgSiO3
Mg MerrilliteCa9NaMg(PO4)7
Mg SpinelMgAl2O4
AlAluminium
Al SpinelMgAl2O4
SiSilicon
Si Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
Si DiopsideCaMgSi2O6
Si EnstatiteMgSiO3
PPhosphorus
P MerrilliteCa9NaMg(PO4)7
SSulfur
S DaubréeliteFe2+Cr23+S4
S IsocubaniteCuFe2S3
S Mackinawite(Fe,Ni)9S8
S TroiliteFeS
CaCalcium
Ca DiopsideCaMgSi2O6
Ca MerrilliteCa9NaMg(PO4)7
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr DaubréeliteFe2+Cr23+S4
FeIron
Fe Enstatite (var: Bronzite)(Mg,Fe2+)2[SiO3]2
Fe ChromiteFe2+Cr23+O4
Fe DaubréeliteFe2+Cr23+S4
Fe IronFe
Fe IsocubaniteCuFe2S3
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Mackinawite(Fe,Ni)9S8
Fe Taenite(Fe,Ni)
Fe TetrataeniteFeNi
Fe TroiliteFeS
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Mackinawite(Fe,Ni)9S8
Ni Taenite(Fe,Ni)
Ni TetrataeniteFeNi
CuCopper
Cu CopperCu
Cu IsocubaniteCuFe2S3
AuGold
Au GoldAu

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

Paleozoic
251.902 - 541 Ma



ID: 3187973
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Sedimentary 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]

Mississippian
323.2 - 358.9 Ma



ID: 2944244
Coldwater Shale

Age: Mississippian (323.2 - 358.9 Ma)

Stratigraphic Name: Coldwater Shale

Description: Kinderhookian series. Secondary unit description from USGS Geologic Names lexicon (ref. MI016):Although the Coldwater has the largest outcrop area of any Mississippian formation, it is inaccessible at most localities. Its exposures are limited to portions of Branch, Calhoun, and Hillsdale Cos in the southern part of the basin and Huron and Sanilac Cos in the Michigan thumb area. The Coldwater conformably overlies the Sunbury and Ellsworth Shales and conformably underlies the Marshall Sandstone. Fossils in the uppermost portion of the Coldwater in the western part of the basin are Osagean in age, but the rest of the formation is Kinderhookian. Maximum thickness is about 366 m in Iosco and Arenac Cos just north of Saginaw Bay, but is generally 305 m in the eastern two-thirds of the basin and thins to about 168 m in the western third. Unit consists predominantly of gray to bluish gray shale. Its clay minerals are chiefly illite and kaolinite with minor chlorite. Other lithologies occur in the Coldwater and their distributions divide the formation into distinct eastern and western facies. In the eastern half of the basin, beds of silty and sandy shale, siltstone and fine-grained sandstone are common, and increase in abundance and coarseness to the west and up section. In the western half of the basin the Coldwater shales are more calcareous and beds of glauconitic, fossiliferous limestone and dolostone occur frequently especially in the middle and upper portions of the formation. Two marker beds can be traced over long distances: the Lime and the Red Rock beds. The Lime occurs throughout the western part of the basin and is commonly 6 to 1 m thick. The Red Rock is more extensive and occurs in all parts of the basin except the extreme northeast. It is typically 3 to 6 m thick and locally reaches 15 m.

Comments: 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:{shale}, Minor:{dolostone,limestone,siltstone,sandstone}

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

Localities in this Region
Show map

USA

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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: August 21, 2019 03:47:06 Page generated: December 21, 2018 02:56:39
Go to top of page