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Minnesotaite

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Formula:
(Fe,Mg)3(Si4O10)(OH)2
System:
Triclinic
Colour:
Greenish-gray to olive ...
Lustre:
Resinous, Waxy, Greasy
Hardness:
1½ - 2
Name:
For its occurrence in the state of Minnesota.
Isostructural with:
Compare also ferripyrophyllite.

Classification of Minnesotaite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
9.EC.05

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
71.2.1.5

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers
14.21.9

14 : Silicates not Containing Aluminum
21 : Silicates of Fe and Mg
mindat.org URL:
http://www.mindat.org/min-2722.html
Please feel free to link to this page.

First Recorded Occurrence of Minnesotaite

Year of Discovery:
1944
Geological Setting of First Recorded Material:
Banded Iron Formation

Occurrences of Minnesotaite

Geological Setting:
Low grade metamorphosed banded iron formations; also hydrothermal alteration around sulphide veins.

Physical Properties of Minnesotaite

Resinous, Waxy, Greasy
Diaphaneity (Transparency):
Translucent
Comment:
Low luster is common
Colour:
Greenish-gray to olive green
Streak:
White
Hardness (Mohs):
1½ - 2
Tenacity:
Brittle
Cleavage:
Perfect
Micaceous on {001}
Fracture:
Irregular/Uneven
Comment:
Usually fine-grained
Density:
3.01 g/cm3 (Measured)    2.97 g/cm3 (Calculated)

Crystallography of Minnesotaite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.623(2) Å, b = 9.419(2) Å, c = 9.624(3) Å
α = 85.21(3)°, β = 95.64(3)°, γ = 90.00°
Ratio:
a:b:c = 0.597 : 1 : 1.022
Z:
2
Morphology:
Usually fine-grained dense masses of microscopic plates or needles
Twinning:
Inferred from single crystal X-ray analysis
X-Ray Powder Diffraction Data:
d-spacingIntensity
9.54 (100)
4.78 (20)
3.18 (50)
2.76 (30)
2.66 (40)
2.54 (30)
2.53 (50)
2.21 (20)
Comments:
2.54 and 2.53 frequently overlap; 41-594

Optical Data of Minnesotaite

Type:
Biaxial (-)
RI values:
nα = 1.578 - 1.583 nβ = 1.578 - 1.622 nγ = 1.615 - 1.623
2V:
Measured: 4°
Birefringence:
0.037-0.040
Max Birefringence:
δ = 0.037 - 0.040
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v moderate
Pleochroism:
Visible
Comments:
X= pale green
Z= colorless to pale greenish yellow

Chemical Properties of Minnesotaite

Formula:
(Fe,Mg)3(Si4O10)(OH)2
Essential elements:
All elements listed in formula:
Common Impurities:
Ti,Al,Mn,Ca,Na,K,H2O

Relationship of Minnesotaite to other Species

Structurally related to group(s):
9.EC.05TalcMg3(Si4O10)(OH)2
9.EC.05Willemseite(Ni,Mg)3(Si4O10)(OH)2
9.EC.10FerripyrophylliteFe23+(Si4O10)(OH)2
9.EC.10PyrophylliteAl2(Si4O10)(OH)2
9.EC.15BoromuscoviteKAl2(BSi3O10)(OH)2
9.EC.15CeladoniteK(Mg,Fe2+)Fe3+(Si4O10)(OH)2
9.EC.15Chernykhite(Ba,Na)(V3+,Al,Mg)2((Si,Al)4O10)(OH)2
9.EC.15Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
9.EC.15MuscoviteKAl2(AlSi3O10)(OH)2
9.EC.15NanpingiteCsAl2(AlSi3O10)(OH,F)2
9.EC.15ParagoniteNaAl2(AlSi3O10)(OH)2
9.EC.15RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
9.EC.15Tobelite(NH4,K)Al2(AlSi3O10)(OH)2
9.EC.15AluminoceladoniteK(Mg,Fe2+)Al(Si4O10)(OH)2
9.EC.15ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2
9.EC.15FerroaluminoceladoniteK(Fe2+,Mg)(Al,Fe3+)(Si4O10)(OH)2
9.EC.15FerroceladoniteK(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2
9.EC.15ChromceladoniteK(Mg,Fe2+)(Cr,Al)(Si4O10)(OH)2
9.EC.15TainioliteKLiMg2(Si4O10)F2
9.EC.15Ganterite(Ba,Na,K)(Al,Mg)2(AlSi3O10)(OH)2
9.EC.20AnniteKFe32+(AlSi3O10)(OH)2
9.EC.20EphesiteLiNaAl2(Al2Si2O10)(OH)2
9.EC.20HendricksiteK(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2
9.EC.20Masutomilite(K,Rb)(Li,Mn3+,Al)3(AlSi3O10)(F,OH)2
9.EC.20NorrishiteKLiMn23+(Si4O10)O2
9.EC.20PhlogopiteKMg3(AlSi3O10)(OH,F)2
9.EC.20PolylithioniteKLi2Al(Si4O10)(F,OH)2
9.EC.20PreiswerkiteNaMg2Al(Al2Si2O10)(OH)2
9.EC.20SiderophylliteKFe22+Al(Al2Si2O10)(OH)2
9.EC.20TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
9.EC.20FluorotetraferriphlogopiteKMg3(Fe3+Si3O10)F2
9.EC.20Wonesite(Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4
9.EC.20EastoniteKMg2Al(Al2Si2O10)(OH)2
9.EC.20TetraferrianniteKFe32+((Fe3+,Al)Si3O10)(OH)2
9.EC.20TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
9.EC.20FluoranniteKFe32+(AlSi3O10)(F,OH)2
9.EC.20ShirokshiniteKNaMg2(Si4O10)F2
9.EC.20ShirozuliteK(Mn2+,Mg)3(AlSi3O10)(OH)2
9.EC.20SokolovaiteCsLi2Al(Si4O10)F2
9.EC.20AspidoliteNaMg3(AlSi3O10)(OH)2
9.EC.20FluorophlogopiteKMg3(AlSi3O10)(F,OH)2
9.EC.20UM2004-49-SiO:AlCsFHKLi(Cs,K)(Al,Li)2.6((Si,Al)4O10)(F,OH)2
9.EC.20Suhailite(NH4)Fe32+(AlSi3O10)(OH)2
9.EC.20YangzhumingiteKMg2.5(Si4O10)F2
9.EC.20OrloviteKLi2Ti(Si4O10)OF
9.EC.20OxyphlogopiteK(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2
9.EC.25Brammallite(Na,H3O)(Al,Mg,Fe)2((Si,Al)4O10)(OH)2
9.EC.30MargariteCaAl2(Al2Si2O10)(OH)2
9.EC.35Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2
9.EC.35BityiteLiCaAl2(AlBeSi2O10)(OH)2
9.EC.35ClintoniteCa(Mg,Al)3(Al3SiO10)(OH)2
9.EC.35Kinoshitalite(Ba,K)(Mg,Mn2+,Al)3(Al2Si2O10)(OH)2
9.EC.35Ferrokinoshitalite(Ba,K)(Fe2+,Mg)3(Al2Si2O10)(OH,F)2
9.EC.35Oxykinoshitalite(Ba,K)(Mg,Ti,Fe3+,Fe2+)3((Si,Al)4O10)(O,OH,F)2
9.EC.35FluorokinoshitaliteBaMg3(Al2Si2O10)F2
9.EC.40Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
9.EC.40Kurumsakite(Zn,Ni,Cu)8Al8V25+Si5O35 · 27H2O (?)
9.EC.40Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
9.EC.40NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
9.EC.40VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O
9.EC.40Yakhontovite(Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2O
9.EC.45HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2
9.EC.45SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
9.EC.45SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
9.EC.45SpadaiteMgSiO2(OH)2 · H2O (?)
9.EC.45Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2
9.EC.45SwineforditeLi(Al,Li,Mg)4((Si,Al)4O10)2(OH,F)4 · nH2O
9.EC.45ZincsiliteZn3(Si4O10)(OH)2 · 4H2O
9.EC.45FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2O
9.EC.50Vermiculite(Mg,Fe,Al)3((Al,Si)4O10)(OH)2 · 4H2O
9.EC.55Baileychlore(Zn,Fe,Al,Mg)6((Si,Al)4O10)(OH)8
9.EC.55Chamosite(Fe2+,Mg)5Al(AlSi3O10)(OH)8
9.EC.55Clinochlore(Mg,Fe2+)5Al(AlSi3O10)(OH)8
9.EC.55Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
9.EC.55FranklinfurnaceiteCa2Fe3+Mn32+Mn3+(Zn2Si2O10)(OH)8
9.EC.55Gonyerite(Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8
9.EC.55Nimite(Ni,Mg,Al)6((Si,Al)4O10)(OH)8
9.EC.55Orthochamosite(Fe2+,Mg,Fe3+)5Al(AlSi3O10)(OH,O)8
9.EC.55PennantiteMn52+Al(AlSi3O10)(OH)8
9.EC.55Sudoite(Mg,Fe2+)2Al3(AlSi3O10)(OH)8
9.EC.55DonbassiteAl4.33(AlSi3O10)(OH)8
9.EC.55GlagoleviteNa(Mg,Al)6(AlSi3O10)(OH,O)8
9.EC.55BorocookeiteLi1+3xAl4-x(BSi3O10)(OH)8
9.EC.60AliettiteCa0.2Mg6((Si,Al)8O20)(OH)4 · 4H2O
9.EC.60Corrensite(Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O
9.EC.60DozyiteMg7Al2(Al2Si4O15)(OH)12
9.EC.60HydrobiotiteK(Mg,Fe2+)6((Si,Al)8O20)(OH)4 · nH2O
9.EC.60Karpinskite(Ni,Mg)2Si2O5(OH)2 (?)
9.EC.60KulkeiteMg8Al(AlSi7O20)(OH)10
9.EC.60LunijianlaiteLi0.7Al6.2(AlSi7O20)(OH,O)10
9.EC.60Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
9.EC.60Saliotite(Li,Na)Al3(AlSi3O10)(OH)5
9.EC.60TosuditeNa0.5(Al,Mg)6((Si,Al)8O18)(OH)12 · 5H2O
9.EC.60BrinrobertsiteNa0.3Al4(Si4O10)2(OH)4 · 3.5 H2O
9.EC.65Macaulayite(Fe,Al)24Si4O43(OH)2
9.EC.70BurckhardtitePb2Fe3+Te6+[AlSi3O8]O6
9.EC.75Ferrisurite(Pb,Ca)2.4Fe23+(Si4O10)(CO3)1.7(OH)3 · nH2O
9.EC.75Surite(Pb,Ca)3(Al,Fe2+,Mg)2((Si,Al)4O10)(CO3)2(OH)2
9.EC.75Niksergievite(Ba,Ca)2Al3(AlSi3O10)(CO3)(OH)6 · nH2O
9.EC.80KegelitePb8Al4(Si8O20)(SO4)2(CO3)4(OH)8
14.21.1Olivine(Mg,Fe2+)2SiO4
14.21.2Ringwoodite(Mg,Fe2+)2SiO4
14.21.3Wadsleyite(Mg,Fe2+)2(SiO4)
14.21.4ClinoferrosiliteFe2+SiO3
14.21.5Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.6Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
14.21.7 Magnesiocummingtonite
14.21.8Grunerite☐{Fe22+}{Fe52+}(Si8O22)(OH)2
14.21.10Chesterite(Mg,Fe)17Si20O54(OH)6
14.21.11Jimthompsonite(Mg,Fe)5Si6O16(OH)2
14.21.12Clinojimthompsonite(Mg,Fe)5Si6O16(OH)2
14.21.13MajoriteMg3(Fe2+,Si,Al)2(SiO4)3
14.21.14Balangeroite(Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40

Other Names for Minnesotaite

Name in Other Languages:
Simplified Chinese:铁滑石
Spanish:Minnesotaita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Minnesotaite

Reference List:
American Mineralogist (1944): 29: 363-372.

Canadian Mineralogist (1986): 24: 479-497.

Internet Links for Minnesotaite

Localities for Minnesotaite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • Victoria
    • Northern Grampians Shire
      • Stawell
http://www.earth2006.org.au/papers/extendedpdf/Wilson.pdf#search=%22Magdala%20gold%20deposit%22
  • Western Australia
    • Ashburton Shire
      • Tom Price
Barley, M.E., Pickard, A.L., Hagemann, S.G., and Folkert, S.L. (1999): Mineralium Deposita 34, 784-789.
    • Cue Shire
      • Madoonga Station
Gole, M.(1980): Mineralogy and Petrology of Very low Grade Metamorphic Grade Archaean Banded Iron Formations Weld Range Western Australia, American Mineralogist (1980):65:8-25
    • East Pilbara Shire
      • Marillana Station
Lascelles, D. F. (2006): Econ. Geol. 101, 1359-1376.
    • Yalgoo Shire
      • Mount Gibson Station
The Mount Gibson Banded Iron Formation-Hosted Magnetite Deposits. Two Distinct Processes for the Origin of High Grade Iron Ore; DF Lascelles; Economic Geology; V101, May 2006, pp 651-666
Brazil
 
  • Pará
    • Carajás mineral province
      • Parauapebas
Grainger, C.J., Groves, D.I., Tallarico, F.H.B., and Fletcher, I.R. (2008): Ore Geology Reviews 33, 451-489.
Canada
 
  • British Columbia
    • Slocan Mining Division
      • Riondel
Handbook of Mineralogy; Min Rec (1977) 8:34-36; Can Mineral September 1986 v. 24 no. 3 p. 479-497
  • Newfoundland and Labrador
    • Labrador
C. Klein, and R. P. Fink, 1976, Petrology of the Sokoman Iron Formation in the Howells River area, at the western edge of the Labrador Trough, Economic Geology, v. 71; no. 2; p. 453-487
C. Klein, and R. P. Fink, 1976, Petrology of the Sokoman Iron Formation in the Howells River area, at the western edge of the Labrador Trough, Economic Geology, v. 71; no. 2; p. 453-487
  • Québec
    • Abitibi-Témiscamingue
      • Rouyn-Noranda TE
Galley, A.G., Jonasson, I.R., and Watkinson, D.H. (2000): Mineralium Deposita 35, 619-637.; Econ Geol. (1995) 90:2006-2017
    • Côte-Nord
      • Caniapiscau RCM
Can Mineral September 1986 v. 24 no. 3 p. 479-497
Can Mineral September 1986 v. 24 no. 3 p. 479-497; Carl M. Lesher (1978) Mineralogy and petrology of the Sokoman Iron Formation near Ardua Lake, Quebec. Canadian Journal of Earth Sciences, 15:480-500
Can Mineral September 1986 v. 24 no. 3 p. 479-497
China
 
  • Inner Mongolia Autonomous Region
    • Xilin Gol League (Xilinguole Prefecture)
      • Erenhot Co. (Erlianhaote Co.)
        • Wenduermiao Fe deposit
Feng Xiancan, Yang Ruiying, Song Guisen, Li Chenggui, and Lu Guojun (1986): Acta Mineralogica Sinica 6(4), 333-337.
  • Shanxi Province
    • Lüliang Prefecture
      • Lan Co.
Jinchu Zhu and Fusheng Zhang (1987): Mineral Deposits 6(1), 11-21
  • Sichuan Province
    • Bazhong Prefecture
      • Nanjiang Co.
Hongbing Hao and Wei Zhang (2001): Acta Geologica Sichuan 21(1), 35-38
Finland
 
  • Lapland Region
    • Kittilä
Paakkola, Juhani 1971. The volcanic complex and associated manganiferous iron formation of the Porkonen-Pahtavaara area in Finnish Lapland. Bulletin de la Commission Géologique de Finlande 247.
India
 
  • Karnataka
    • Tumkur District
      • Chitradurga belt
Saravanan, C.S., and Mishra, B. (2009): Mineralium Deposita 44, 597-605.
Ireland
 
  • Co. Galway
    • Killimor
Gaines et al. 1997, Dana's System of Mineralogy
Italy
 
  • Piedmont
    • Cuneo Province
      • Po Valley
        • Monviso
P. Nisio and J.M. Lardeaux, Bull. Minéral. , 1987, 110, pp. 427-437.
  • Sardinia
    • Nuoro Province
      • Gadoni
Stara, P., Rizzo, R., Sabelli, C., Ibba, A. (1999): I minerali di Funtana Raminosa. Rivista Mineralogica Italiana, 1/1999, 10-27.
Romania
 
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
http://minerals-of-the-carpathians.eu
South Africa
 
  • North West Province
    • Ngaka Modiri Molema District
Hammond, N. Q. & Moore, J. M. (2006): Mineralium Deposita 41, 483-503.
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Minerals of South Africa
Spain
 
  • Murcia
    • Sierra de Cartagena
Gaines et al. 1997, Dana's System of Mineralogy
Sweden
 
  • Västmanland
    • Hällefors
      • Hjulsjö
Mineralogical Magazine (1985) 49 (353), 611-613
UK
 
  • England
    • Cornwall
Handbook of Mineralogy
USA
 
  • Arkansas
    • Garland Co.
      • Wilson Springs (Potash Sulfur Springs)
Rocks & Min.: 63:108.
  • Massachusetts
    • Essex Co.
Bozhilov, K. N. & B. W. Evans (2001): Ferroanthophyllite in Rockport grunerite: A transmission electron microscopy study. (American Mineralogist 86(10):1252-1260)
  • Michigan
    • Baraga Co.
Mineralogy of Michigan (2004) Heinrich & Robinson
www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf.
www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf.
      • Marquette iron range
        • Champion
Rocks & Min.:58:111 & 61:328.
        • Palmer
Rocks & Min.:58:111.
        • Republic
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
  • Minnesota
Jay Ellis Ransom,1974, Gems and Minerals of America
    • Crow Wing Co.
Can Min 20 (1982), 579; Am Min 50:148-169
USGS Prof Paper 407
        • Riverton
Am Min 50:148-169; Can Mineral September 1986 v. 24 no. 3 p. 479-497
Econ Geology (1993)88:104-122
    • Itasca Co.
      • Mesabi Range
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
    • St. Louis Co.
Can Min 20 (1982), 579
Can Mineral September 1986 v. 24 no. 3 p. 479-497
Am Min 29:363-372
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
55TH INSTITUTE ON LAKE SUPERIOR GEOLOGY (2009) PROCEEDINGS VOLUME 55 p. 70-71
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
55TH INSTITUTE ON LAKE SUPERIOR GEOLOGY (2009) PROCEEDINGS VOLUME 55 p. 54-55
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
  • New Mexico
    • McKinley Co.
      • Grants District
        • Ambrosia Lake area
NMBMMR Memoir 38 Geology and Technology of the Grants Uranium Region 1979
  • Washington
    • Ferry Co.
      • Belcher District
        • Cooke Mountain
Can Mineral February 1998 v. 36 no. 1 p. 147-162
  • Wisconsin
    • Ashland Co.
Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
    • Iron Co.
      • Gogebic Range
        • Montreal
Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399
Mineral and/or Locality  
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