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Manjiroite

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Formula:
Na(Mn
4+
7
Mn
3+
 
)O
 
16
May contain K replacing Na.
System:TetragonalColour:Brownish-grey
Lustre:DullHardness:7
Member of:Coronadite Group > Hollandite Supergroup
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

IMA status:Approved
Strunz 8th edition ID:4/D.08-10
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:7.9.1.3

7 : MULTIPLE OXIDES
9 : AB8X16
Hey's CIM Ref.:7.2.3

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

Type Locality:Kohare mine, Karumai, Iwate Prefecture, Tohoku Region, Honshu Island, Japan
Year of Discovery:1967

Physical Properties of Manjiroite

Lustre:Dull
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:
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(Mn
4+
7
Mn
3+
 
)O
 
16


May contain K replacing Na.
Simplified for copy/paste:Na(Mn4+7Mn3+)O16
Essential elements:Mn, Na, O
All elements listed in formula:Mn, Na, O

Relationship of Manjiroite to other Species

Member of:Coronadite Group > Hollandite Supergroup
Other Members of Group:

- +
Coronadite
Pb(Mn
4+
6
Mn
3+
2
)O
 
16
Cryptomelane
K(Mn
4+
7
Mn
3+
 
)O
 
16
Ferrihollandite
Ba(Mn
4+
6
Fe
3+
2
)O
 
16
Hollandite
Ba(Mn
4+
6
Mn
3+
2
)O
 
16
Strontiomelane
Sr(Mn
4+
6
Mn
3+
2
)O
 
16
Related Minerals - Nickel-Strunz Grouping):

- +
4.DK.05Akaganeite
β-Fe
3+
 
O(OH,Cl)
4.DK.05aCoronadite
Pb(Mn
4+
6
Mn
3+
2
)O
 
16
4.DK.05aCryptomelane
K(Mn
4+
7
Mn
3+
 
)O
 
16
4.DK.05aHollandite
Ba(Mn
4+
6
Mn
3+
2
)O
 
16
4.DK.05bMannardite
Ba(Ti
4+
6
V
3+
2
)O
 
16
4.DK.05bPriderite
K(Ti
4+
7
Fe
3+
 
)O
 
16
4.DK.05bRedledgeite
Ba(Ti
4+
6
Cr
3+
2
)O
 
16
4.DK.05bHenrymeyerite
Ba(Ti
4+
7
Fe
2+
 
)O
 
16
4.DK.05aStrontiomelane
Sr(Mn
4+
6
Mn
3+
2
)O
 
16
4.DK.10Romanèchite
(Ba,H
 
2
O)
 
2
Mn
 
5
O
 
10
4.DK.10Todorokite
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
 
6
O
 
12
· 3H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
7.2.1Lithiophorite
(Al,Li)MnO
 
2
(OH)
 
2
7.2.2Diaoyudaoite
NaAl
 
11
O
 
17
7.2.4Cryptomelane
K(Mn
4+
7
Mn
3+
 
)O
 
16

Other Names for Manjiroite

Synonyms:
IMA1966-009
Other Languages:
German:Manjiroit
Japanese:万次郎鉱
Spanish:Manjiroita

Other Information

Health Warning: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

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Manjiroite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Manjiroite specimens for sale - minfind.com
  • Localities for Manjiroite

    The 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. ? 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
    Journ.Jap.Ass.Min.Petr.Econ.Geol.(1967) 58, 39-54
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    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)
    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
    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
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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