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Manjiroite

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Formula:
Na(Mn74+Mn3+)O16
May contain K replacing Na.
System:
Tetragonal
Colour:
Brownish-grey
Lustre:
Dull
Hardness:
7
Name:
Named in 1967 by Matsuo Nambu and Katsutoshi Tanida in honor of Dr. Manjiro Watanabe [1891 Japan - 1980 Japan], mineralogist, economic geologist and Professor at Tohoku University, Japan.
This page provides mineralogical data about Manjiroite.

Classification of Manjiroite

Approved
4.DK.05a

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
K : With large (+- medium-sized) cations; tunnel structures
7.9.1.3

7 : MULTIPLE OXIDES
9 : AB8X16
7.2.3

7 : Oxides and Hydroxides
2 : Oxides of the alkali metals
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First Recorded Occurrence of Manjiroite

Year of Discovery:
1967

Physical Properties of Manjiroite

Colour:
Brownish-grey
Streak:
Brownish black
Hardness (Mohs):
7

Crystallography of Manjiroite

Crystal System:
Tetragonal
Cell Parameters:
a = 9.91Å, c = 2.86Å
Ratio:
a:c = 1 : 0.289
Unit Cell Volume:
V 280.88 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
7.017 (98)
4.941 (77)
3.136 (92)
2.406 (100)
2.160 (69)
1.839 (46)
1.548 (46)

Chemical Properties of Manjiroite

Formula:
Na(Mn74+Mn3+)O16

May contain K replacing Na.
Essential elements:
All elements listed in formula:

Relationship of Manjiroite to other Species

Other Members of Group:
CoronaditePb(Mn64+Mn23+)O16
CryptomelaneK(Mn74+Mn3+)O16
FerrihollanditeBa(Mn64+Fe23+)O16
HollanditeBa(Mn64+Mn23+)O16
StrontiomelaneSr(Mn64+Mn23+)O16
4.DK.05Akaganeiteβ-Fe3+O(OH,Cl)
4.DK.05aCoronaditePb(Mn64+Mn23+)O16
4.DK.05aCryptomelaneK(Mn74+Mn3+)O16
4.DK.05aHollanditeBa(Mn64+Mn23+)O16
4.DK.05bMannarditeBa(Ti64+V23+)O16
4.DK.05bPrideriteK(Ti74+Fe3+)O16
4.DK.05bRedledgeiteBa(Ti64+Cr23+)O16
4.DK.05bHenrymeyeriteBa(Ti74+Fe2+)O16
4.DK.05aStrontiomelaneSr(Mn64+Mn23+)O16
4.DK.10Romanèchite(Ba,H2O)2Mn5O10
4.DK.10Todorokite(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12 · 3H2O
7.2.1Lithiophorite(Al,Li)MnO2(OH)2
7.2.2DiaoyudaoiteNaAl11O17
7.2.4CryptomelaneK(Mn74+Mn3+)O16

Other Names for Manjiroite

Name in Other Languages:
German:Manjiroit
Japanese:万次郎鉱
Spanish:Manjiroita

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 Manjiroite

Reference List:
American Mineralogist (1968): 53: 2103.

Mineralogical Society of Japan (1980): 14: 72.

Internet Links for Manjiroite

Localities for Manjiroite

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.
Democratic Republic of Congo (Zaïre)
 
  • Katanga (Shaba)
    • Lulua
Paul De Bondt collection
Germany
 
  • Rhineland-Palatinate
    • Lahn valley
      • Bad Ems District
        • Frücht
Der Aufschluss Vol.55, March/April 2004
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
Japan
 
  • Honshu Island
    • Chubu Region
      • Shizuoka Prefecture
        • Kawazu
Powder XRD by John Attard, January 2008.
    • Tohoku Region
      • Iwate Prefecture
        • Karumai
Nambu M, Tanida K (1967) Manjirōite, a new manganese dioxide mineral, from Kohare Mine, Iwate Prefecture, Japan. Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 58, 39-54
Dr. Matsuo Nambu collection (curated at Geological Survey of Japan); Nambu M, Tanida K (1967) Manjirōite, a new manganese dioxide mineral, from Kohare Mine, Iwate Prefecture, Japan. Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 58, 39-54
Nambu & Tanida (1980) Koubutsugaku Zasshi, 14 (special volume), 62-85.
        • Kuji City
          • Yamagata
Nambu & Tanida (1980) Koubutsugaku Zasshi, 14 (special volume), 62-85.
        • Kunohe
Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
        • Ono
Dr. Matsuo Nambu collection (curated at Geological Survey of Japan); Nambu M, Tanida K (1967) Manjirōite, a new manganese dioxide mineral, from Kohare Mine, Iwate Prefecture, Japan. Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 58, 39-54
Portugal
 
  • Guarda District
    • Gouveia
      • Folgosinho
-Idoia Garate-Olabe,Encarnacion Roda-Robles,Pedro-Pablo Gil-Crespo, Alfonso Pérez,Romeu Vieira, Alexandra Lima, Estudio Textural y Mineralogico del Dique de Cuarzo con Fosfatos de Folgosinho (Guarda, Portugal) Macle N°16 junio 2012 revista de la sociedad espanola de mineralogia
Romania
 
  • Caraş-Severin Co.
    • Banat Mts
      • Ocna de Fier-Dognecea District
http://minerals-of-the-carpathians.eu
Russia
 
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Plast
          • Kochkar' District
            • Svetlyi
Igor Savin's data
South Africa
 
  • Northern Cape Province
    • Kalahari manganese field
Minerals of South Africa; Preston, P. C. C. R. (2009). Physical and chemical characterization of the manganese ore bed at the Mamatwan mine, Kalahari manganese field (Doctoral dissertation).
Willy Israel and Clement Smith collections
USA
 
  • Arizona
    • Cochise Co.
      • Tombstone Hills
        • Tombstone District
          • Oregon-Prompter Mine group
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 289.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.:76
  • Colorado
    • Teller Co.
      • Cripple Creek District
Econ Geol (1985) 80:1669-1688
Min Rec 36:2 pp143-185
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Ogdensburg
Mike Scott S106121 from Cureton 1990 ID A. Roberts GSC 1991
Mineral and/or Locality  
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