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Masutomilite

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Dr. Kazunosuke Masutomi
Formula:
KLiAlMn2+(Si3Al)O10(F,OH)2
System:
Monoclinic
Hardness:
Member of:
Name:
Named in 1977 by Kazuo Harada, Mariko Honda, Kozo Nagashima and Satoshi Kanisawa in honor of Dr. Kazunosuke Masutomi, pharmacist and amateur mineralogist, for his contribution to minerals from Japan.

Classification of Masutomilite

Approved
First Published:
1977
9.EC.20

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
71.2.2b.12

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers
16.16.11

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn

Physical Properties of Masutomilite

Hardness (Mohs):

Optical Data of Masutomilite

Type:
Biaxial (-)
RI values:
nα = 1.534 nβ = 1.569 nγ = 1.570
2V:
Measured: 29° to 31°, Calculated: 18°
Max Birefringence:
δ = 0.036
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v weak

Chemical Properties of Masutomilite

IMA Formula:
KLiAlMn2+(Si3Al)O10(F,OH)2
Elements listed in formula:
Common Impurities:
Ti,Fe,Na,Rb,H2O

Crystallography of Masutomilite

Crystal System:
Monoclinic
Cell Parameters:
a = 5.26Å, b = 9.1Å, c = 10.09Å
β = 100.83°
Ratio:
a:b:c = 0.578 : 1 : 1.109
Unit Cell Volume:
V 474.37 ų (Calculated from Unit Cell)

Type Occurrence of Masutomilite

Relationship of Masutomilite to other Species

Member of:
Other Members of Group:
AluminoceladoniteK(Mg,Fe2+)Al(Si4O10)(OH)2
Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2
AnniteKFe32+(AlSi3O10)(OH)2
AspidoliteNaMg3(AlSi3O10)(OH)2
BalestraiteKLi2V5+Si4O12
BiotiteA series or subgroup of the Mica Group.
BityiteLiCaAl2(AlBeSi2O10)(OH)2
BoromuscoviteKAl2(BSi3O10)(OH)2
Brammallite(Na,H3O)(Al,Mg,Fe)2((Si,Al)4O10)(OH)2
CeladoniteK(Mg,Fe2+)Fe3+(Si4O10)(OH)2
Chernykhite(Ba,Na)(V3+,Al,Mg)2((Si,Al)4O10)(OH)2
ChromceladoniteK(Mg,Fe2+)(Cr,Al)(Si4O10)(OH)2
ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2
ClintoniteCa(Mg,Al)3(Al3SiO10)(OH)2
EastoniteKMg2Al(Al2Si2O10)(OH)2
EphesiteLiNaAl2(Al2Si2O10)(OH)2
FerroaluminoceladoniteK(Fe2+,Mg)(Al,Fe3+)(Si4O10)(OH)2
FerroceladoniteK(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2
Ferrokinoshitalite(Ba,K)(Fe2+,Mg)3(Al2Si2O10)(OH,F)2
FluoranniteKFe32+(AlSi3O10)(F,OH)2
FluorophlogopiteKMg3(AlSi3O10)(F,OH)2
Ganterite(Ba,Na,K)(Al,Mg)2(AlSi3O10)(OH)2
Glauconite(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
HendricksiteK(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2
IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kinoshitalite(Ba,K)(Mg,Mn2+,Al)3(Al2Si2O10)(OH)2
LepidoliteA Li-rich mica in, or close to, the so-called Polylithionite-Trilithionite series.
LuanshiweiiteKLiAl1.50.5(Si3.5Al0.5)O10(OH,F)2
MargariteCaAl2(Al2Si2O10)(OH)2
Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4
MuscoviteKAl2(AlSi3O10)(OH)2
NanpingiteCsAl2(AlSi3O10)(OH,F)2
Natro-glauconite(Na,K)(Fe3+,Al,Mg)2((Si,Al)4O10)(OH)2
NorrishiteKLiMn23+(Si4O10)O2
Oxykinoshitalite(Ba,K)(Mg,Ti,Fe3+,Fe2+)3((Si,Al)4O10)(O,OH,F)2
OxyphlogopiteK(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2
ParagoniteNaAl2(AlSi3O10)(OH)2
PhengiteKAl2(AlSi3O10)(OH)2
PhlogopiteKMg3(AlSi3O10)(OH)2
PolylithioniteKLi2Al(Si4O10)(F,OH)2
PreiswerkiteNaMg2Al(Al2Si2O10)(OH)2
RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
ShirokshiniteKNaMg2(Si4O10)F2
ShirozuliteK(Mn2+,Mg)3(AlSi3O10)(OH)2
SiderophylliteKFe22+Al(Al2Si2O10)(OH)2
SokolovaiteCsLi2Al(Si4O10)F2
Suhailite(NH4)Fe32+(AlSi3O10)(OH)2
TainioliteKLiMg2(Si4O10)F2
TetraferrianniteKFe32+((Fe3+,Al)Si3O10)(OH)2
TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Tobelite(NH4,K)Al2(AlSi3O10)(OH)2
TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2
VoloshiniteRb(LiAl1.51.5)(Al0.5Si3.5)O10F2
Wonesite(Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4
YangzhumingiteKMg2.5(Si4O10)F2
ZinnwalditeKLiFe2+Al(AlSi3O10)(F,OH)2
9.EC.05MinnesotaiteFe32+Si4O10(OH)2
9.EC.05TalcMg3Si4O10(OH)2
9.EC.05WillemseiteNi3Si4O10(OH)2
9.EC.10FerripyrophylliteFe3+Si2O5(OH)
9.EC.10PyrophylliteAl2Si4O10(OH)2
9.EC.15BoromuscoviteKAl2(Si3B)O10(OH)2
9.EC.15CeladoniteKMgFe3+Si4O10(OH)2
9.EC.15ChernykhiteBaV23+(Si2Al2)O10(OH)2
9.EC.15MontdoriteKFe2+1.5Mn2+0.5Mg0.5Si4O10(F,OH)2
9.EC.15MuscoviteKAl2(Si3Al)O10(OH)2
9.EC.15NanpingiteCsAl2(Si3Al)O10(OH)2
9.EC.15ParagoniteNaAl2(Si3Al)O10(OH)2
9.EC.15RoscoeliteKV23+(Si3Al)O10(OH)2
9.EC.15Tobelite(NH4)Al2(Si3Al)O10(OH)2
9.EC.15AluminoceladoniteKMgAlSi4O10(OH)2
9.EC.15ChromphylliteKCr2(Si3Al)O10(OH)2
9.EC.15FerroaluminoceladoniteKFe2+AlSi4O10(OH)2
9.EC.15FerroceladoniteKFe2+Fe3+Si4O10(OH)2
9.EC.15ChromceladoniteKMgCrSi4O10(OH)2
9.EC.15TainioliteKLiMg2Si4O10F2
9.EC.15GanteriteBa0.5(Na,K)0.5Al2(Si2.5Al1.5)O10(OH)2
9.EC.20AnniteKFe32+AlSi3O10(OH)2
9.EC.20EphesiteNaLiAl2(Si2Al2)O10(OH)2
9.EC.20HendricksiteKZn3(Si3Al)O10(OH)2
9.EC.20NorrishiteKLiMn23+Si4O12
9.EC.20PhlogopiteKMg3(Si3Al)O10(OH)2
9.EC.20PolylithioniteKLi2AlSi4O10F2
9.EC.20PreiswerkiteNaAlMg2(Si2Al2)O10(OH)2
9.EC.20SiderophylliteKFe22+Al(Si2Al2)O10(OH)2
9.EC.20TetraferriphlogopiteKMg3(Si3Fe3+)O10(OH)2
9.EC.20FluorotetraferriphlogopiteKMg3Fe3+Si3O10F2
9.EC.20Wonesite(Na,K,◻)(Mg,Fe,Al)6(Si,Al)8O20(OH,F)4
9.EC.20EastoniteKAlMg2(Si2Al2)O10(OH)2
9.EC.20TetraferrianniteKFe32+(Si3Fe3+)O10(OH)2
9.EC.20TrilithioniteKLi1.5Al1.5(Si3Al)O10F2
9.EC.20FluoranniteKFe32+(Si3Al)O10F2
9.EC.20ShirokshiniteK(Mg2Na)Si4O10F2
9.EC.20ShirozuliteKMn32+(Si3Al)O10(OH)2
9.EC.20SokolovaiteCsLi2AlSi4O10F2
9.EC.20AspidoliteNaMg3(Si3Al)O10(OH)2
9.EC.20FluorophlogopiteKMg3(Si3Al)O10F2
9.EC.20UM2004-49-SiO:AlCsFHKLi(Cs,K)(Al,Li)2.6((Si,Al)4O10)(F,OH)2
9.EC.20Suhailite(NH4)Fe32+(Si3Al)O10(OH)2
9.EC.20YangzhumingiteKMg2.5Si4O10F2
9.EC.20OrloviteKLi2TiSi4O10(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(Si2Al2)O10(OH)2
9.EC.35AnanditeBaFe32+(Si3Fe3+)O10S(OH)
9.EC.35BityiteCaLiAl2(Si2BeAl)O10(OH)2
9.EC.35ClintoniteCaAlMg2(SiAl3)O10(OH)2
9.EC.35KinoshitaliteBaMg3(Si2Al2)O10(OH)2
9.EC.35FerrokinoshitaliteBaFe32+(Si2Al2)O10(OH)2
9.EC.35OxykinoshitaliteBaMg2Ti4+O2(Si2Al2)O10
9.EC.35FluorokinoshitaliteBaMg3Al2Si2O10F2
9.EC.40Beidellite(Na,Ca)0.3Al2(Si,Al)4O10(OH)2 · nH2O
9.EC.40KurumsakiteZn8Al8V25+Si5O35 · 27H2O
9.EC.40Montmorillonite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2 · nH2O
9.EC.40NontroniteNa0.3Fe23+(Si,Al)4O10(OH)2 · nH2O
9.EC.40VolkonskoiteCa0.3(Cr,Mg)2(Si,Al)4O10(OH)2 · 4H2O
9.EC.40Yakhontovite(Ca,Na,K)0.2(Cu,Fe,Mg)2Si4O10(OH)2 · 3H2O
9.EC.45HectoriteNa0.3(Mg,Li)3Si4O10(F,OH)2 · nH2O
9.EC.45Saponite(Ca,Na)0.3(Mg,Fe2+)3(Si,Al)4O10(OH)2 · 4H2O
9.EC.45SauconiteNa0.3Zn3(Si,Al)4O10(OH)2 · 4H2O
9.EC.45SpadaiteMgSiO2(OH)2 · H2O(?)
9.EC.45Stevensite(Ca,Na)xMg3-ySi4O10(OH)2
9.EC.45SwineforditeCa0.2(Li,Al,Mg,Fe)3(Si,Al)4O10(OH,F)2 · nH2O
9.EC.45ZincsiliteZn3Si4O10(OH)2 · 4H2O
9.EC.45FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3(Si,Al)4O10(OH)2 · 4H2O
9.EC.50VermiculiteMg0.7(Mg,Fe3+,Al)6(Si,Al)8O20(OH)4 · 8H2O
9.EC.55Baileychlore(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8
9.EC.55Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
9.EC.55ClinochloreMg5Al(AlSi3O10)(OH)8
9.EC.55Cookeite(Al,Li)3Al2(Si,Al)4O10(OH)8
9.EC.55FranklinfurnaceiteCa2Mn32+Mn3+Fe3+Zn2Si2O10(OH)8
9.EC.55GonyeriteMn52+Fe3+(Si3Fe3+O10)(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.55Pennantite(Mn2+,Al)6(Si,Al)4O10(OH)8
9.EC.55SudoiteMg2Al3(Si3Al)O10(OH)8
9.EC.55DonbassiteAl2(Si3Al)O10(OH)2 · Al2.33(OH)6
9.EC.55GlagoleviteNa(Mg,Al)6(Si3Al)O10(OH,O)8
9.EC.55BorocookeiteLiAl4(Si3B)O10(OH)8
9.EC.60AliettiteCa0.2Mg6(Si,Al)8O20(OH)4 · 4H2O
9.EC.60Corrensite(Ca,Na,K)1-x(Mg,Fe,Al)9(Si,Al)8O20(OH)10 · nH2O
9.EC.60DozyiteMg7Al2(Si4Al2)O15(OH)12
9.EC.60HydrobiotiteK(Mg,Fe2+)6(Si,Al)8O20(OH)4 · nH2O
9.EC.60Karpinskite(Mg,Ni)2Si2O5(OH)2(?)
9.EC.60KulkeiteNa0.3Mg8Al(Si,Al)8O20(OH)10
9.EC.60LunijianlaiteLi0.7Al6.2(Si7Al)20(OH,O)10
9.EC.60Rectorite(Na,Ca)Al4(Si,Al)8O20(OH)4 · 2H2O
9.EC.60Saliotite(Li,Na)Al3(Si3Al)O10(OH)5
9.EC.60TosuditeNa0.5(Al,Mg)6(Si,Al)8O18(OH)12 · 5H2O
9.EC.60Brinrobertsite(Na,K,Ca)0.3(Al,Fe,Mg)4(Si,Al)8O20(OH)4 · 3.5H2O
9.EC.65MacaulayiteFe243+Si4O43(OH)2
9.EC.70BurckhardtitePb2(Fe3+Te6+)[AlSi3O8]O6
9.EC.75FerrisuritePb2.4Fe23+Si4O10(CO3)1.7(OH)3 · nH2O
9.EC.75Surite(Pb,Ca)3Al2(Si,Al)4O10(CO3)2(OH)3 · 0.3H2O
9.EC.75NiksergieviteBa2Al3(Si,Al)4O10(CO3)(OH)6 · nH2O
9.EC.80KegelitePb4Al2Si4O10(SO4)(CO3)2(OH)4
16.16.1KanonaiteMn3+AlOSiO4
16.16.2SpessartineMn32+Al2(SiO4)3
16.16.3DavreuxiteMn2+Al6Si4O17(OH)2
16.16.4SursassiteMn22+Al3(SiO4)(Si2O7)(OH)3
16.16.5CarpholiteMn2+Al2Si2O6(OH)4
16.16.6Kellyite(Mn2+,Mg,Al)3(Si,Al)2O5(OH)4
16.16.7Pennantite(Mn2+,Al)6(Si,Al)4O10(OH)8
16.16.8AkatoreiteMn92+Al2Si8O24(OH)8
16.16.9Ganophyllite(K,Na)xMn62+(Si,Al)10O24(OH)4 · nH2O (x=1-2; n=7-11)
16.16.10Mangano-ferri-eckermanniteNaNa2(Mn42+Fe3+)Si8O22(OH)2
16.16.13HowieiteNa(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10
16.16.14Eggletonite(Na,K,Ca)xMn6(Si,Al)10O24(OH)4 · nH2O, (x = 1-2, n = 7-11)
16.16.15Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O
16.16.16Taneyamalite(Na,Ca)Mn122+(Si,Al)12(O,OH)44
16.16.17ZussmaniteK(Fe,Mg,Mn)13(Si,Al)18O42(OH)14
16.16.18CoombsiteKMn132+Si18O42(OH)15
16.16.19HenritermieriteCa3Mn23+(SiO4)2(OH)4
16.16.20MacfalliteCa2Mn33+(SiO4)(Si2O7)(OH)3
16.16.21OttréliteMn2+Al2O(SiO4)(OH)2
16.16.22PiemontiteCa2Mn3+Al2(Si2O7)(SiO4)O(OH)
16.16.23OkhotskiteCa2(Mn,Mg)(Mn3+,Al,Fe3+)2Si3(O,OH)14
16.16.24Pumpellyite-(Mn2+)Ca2Mn2+Al2(SiO4)(Si2O7)(OH)2 · H2O
16.16.25Piemontite-(Sr)CaSrMn3+Al2(Si2O7)(SiO4)O(OH)

Other Names for Masutomilite

Name in Other Languages:

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 Masutomilite

Reference List:
Harada, K., Honda, M., Nagashima, K., Kanisawa S. (1977) Masutomilite, manganese analog of zinnwaldite, with special reference to masutomilite-lepidolite-zinnwaldite series. Mineralogical Journal (Japan): 8: 95-100.

Mizota, T., Kato, T., Harada, K. (1986) The crystal structure of masutomilite, Mn analog of zinnwaldite. Mineralogical Journal (Japan): 13: 13-21

Rieder, M., et al (1998) Nomenclature of the micas. Canadian Mineralogist: 36: 905-912.


Internet Links for Masutomilite

mindat.org URL:
https://www.mindat.org/min-2588.html
Please feel free to link to this page.

Localities for Masutomilite

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.
Algeria
 
  • Tamanghasset Province
    • Ahaggar Mtn (Hoggar Mtn)
Czech Republic
 
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Třebíč
Škoda, R., Novák, M., Houzar, S.: Granitické NYF pegmatity třebíčského plutonu. Acta Musei Moraviae, Scientiae geologicae, 2006, roč. 91, s. 129 - 176.
Japan
 
  • Honshu Island
    • Chubu Region
      • Gifu Prefecture
        • Nakatsugawa City
Am.Min. 62:594 (1977); Brigatti, M. F., Mottana, A., Malferrari, D., & Cibin, G. (2007). Crystal structure and chemical composition of Li-, Fe-, and Mn-rich micas. American Mineralogist, 92(8-9), 1395-1400.
Harada, K. et al. (1976) Mineralogical Journal, 8, 95-109). (Harada, K., et al. (1977) Am. Min. 62, 594.)
    • Kinki Region
      • Shiga Prefecture
        • Otsu City
Harada, K., Honda, M., Nagashima, K., Kanisawa S. (1977) Masutomilite, manganese analog of zinnwaldite, with special reference to masutomilite-lepidolite-zinnwaldite series. Mineralogical Journal (Japan): 8: 95-100; Am.Min. 62:594 (1977)
Russia
 
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Rezh District
          • Lipovka pegmatite field
Igor.V. Pekov, Lyudmila R. Memetova (2008) Minerals of the Lipovka Granite Pegmatites, Central Urals, Russia. Mineralogical Almanac 13:6-45
        • Yuzhakovo Village
          • Alabashka pegmatite field
Pavel M. Kartashov data
    • Southern Urals
      • Chelyabinsk Oblast'
        • Kyshtym (Kychtym; Kishtim)
Old data. Confirmed by V.Popov
USA
 
  • Connecticut
    • Middlesex Co.
      • Portland
        • Collins Hill
          • Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries)
Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy.
  • Idaho
    • Boise Co.
R&M 70:4 pp 242-263 WC van Laer, 2007 (mindat.org)
    • Custer Co.
R&M 70:4 pp 242-263 WC van Laer, 2009 (mindat.org)
    • Elmore Co.
R&M 70:4 pp 242-263 WC van Laer, 2009 (mindat.org)
Rocks & Min. 70:246
  • Virginia
    • Amelia Co.
      • Winterham
Rocks & Minerals 71:3 pp198-199
Mineral and/or Locality  
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