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Richards Mine (Dunn; Richards-Dunn), Mastodon Township, Iron County, Michigan, USAi
Regional Level Types
Richards Mine (Dunn; Richards-Dunn)Mine
Mastodon TownshipTownship
Iron CountyCounty
MichiganState
USACountry
Richards Mine (Dunn; Richards-Dunn), Menominee Iron Range mining district, Michigan, USA

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Latitude & Longitude (WGS84):
46° 4' 17'' North , 88° 22' 27'' West
Latitude & Longitude (decimal):
46.07139,-88.37444
GeoHash:
G#: f01nhgp9q
GRN:
N31W45
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Alpha138 (2017)3.1km
Crystal Falls1,414 (2017)4.3km
Gaastra332 (2017)17.9km
Amasa283 (2017)18.8km
Florence592 (2017)19.1km
Mindat Locality ID:
124306
Long-form identifier:
mindat:1:2:124306:5
GUID (UUID V4):
0


Commodities (Major) - Iron
Deposit Type: Secondary Enrichment
Development Status: Past Producer
Deposit Model: 241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Host Rock Unit: Riverton Iron-Formation
Host Rock: Iron Formation

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


5 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

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘHematite4.CB.05Fe2O3
Group 5 - Nitrates and Carbonates
ⓘSiderite5.AB.05FeCO3
Group 9 - Silicates
ⓘStilpnomelane9.EG.40(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Mica Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ GoethiteFe3+O(OH)
Hⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
CCarbon
Cⓘ SideriteFeCO3
OOxygen
Oⓘ GoethiteFe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ SideriteFeCO3
Oⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
NaSodium
Naⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
MgMagnesium
Mgⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
AlAluminium
Alⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
SiSilicon
Siⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
SSulfur
Sⓘ PyriteFeS2
KPotassium
Kⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
CaCalcium
Caⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
FeIron
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
Feⓘ Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
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.

References

Lake Superior Iron Ore Association (1952) Lake Superior Iron Ores: Mining Directory and Statistical Record of the Lake Superior Iron Ore District of the United States and Canada. Cleveland, Ohio. 334 pages.
James, H.L., Dutton, C.E., Pettijohn, F.J., Weir, K.L. (1968) Geology and Ore Deposits of the Iron River-Crystal Falls District, Iron County, Michigan. United States Geological Survey Professional Paper 570: 45-56, 88-110.
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