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Jacobsite

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Big Photo

Pumice quarries, Wingertsberg, Niedermendig, Mendig, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany
© C.H.M.-Schäfer

Show Jacobsite Photos (26)



Formula:
Mn
2+
 
Fe
3+
2
O
 
4
System:IsometricColour:Black, grey in reflected ...
Lustre:Sub-MetallicHardness:5½ - 6½
Member of:Spinel Group
Name:After the type locality of Jakobsberg, Sweden.


Spinel Group, Fe series. Jacobsite-Magnetite Series.

Visit gemdat.org for gemological information about Jacobsite. Currently in public beta-test.

Classification of Jacobsite

IMA status:Approved
Strunz 8th edition ID:4/B.02-30
Nickel-Strunz 10th (pending) edition ID:4.BB.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations
Dana 8th edition ID:7.2.2.2

7 : MULTIPLE OXIDES
2 : AB2X4
Hey's CIM Ref.:7.19.3

7 : Oxides and Hydroxides
19 : Oxides of Mn and Fe
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Type Occurrence of Jacobsite

Type Locality:Jakobsberg Mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden
Year of Discovery:1869

Physical Properties of Jacobsite

Lustre:Sub-Metallic
Diaphaneity (Transparency):Opaque
Colour:Black, grey in reflected light
Streak:Reddish black
Hardness (Mohs):5½ - 6½
Tenacity:Brittle
Density (measured):4.76 g/cm3
Density (calculated):5.03 g/cm3

Crystallography of Jacobsite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Fd3m {F41/d 3 2/m}
Cell Parameters:a = 8.457Å
Unit Cell Volume:V 604.85 ų (Calculated from Unit Cell)
Morphology:Octahedral. Rarely found as crystals. Massive, granular.
Crystal Atlas:
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Jacobsite no.1 - Goldschmidt (1913-1926)
Jacobsite no.6 - Goldschmidt (1913-1926)

About Crystal Atlas

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The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. You need Java to see these. You can download Java for free - click here to download Java

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Epitaxial Relationships of Jacobsite

Epitaxial Minerals:
Hausmannite
MnMn
 
2
O
 
4
Epitaxi Comments:Oriented intergrowths (Vredenbergite).

Optical Data of Jacobsite

Type:Isotropic
Type:Isotropic
Colour in reflected light:Grey-white with olive tint
Internal Reflections:Brown

Chemical Properties of Jacobsite

Formula:
Mn
2+
 
Fe
3+
2
O
 
4
Essential elements:Fe, Mn, O
All elements listed in formula:Fe, Mn, O
Common Impurities:Zn

Relationship of Jacobsite to other Species

Series:Forms a series with Magnetite (see here)
Member of:Spinel Group
Other Members of Group:

- +
Brunogeierite
Fe
2+
2
Ge
4+
 
O
 
4
Chromite
Fe
2+
 
Cr
3+
2
O
 
4
Cochromite
(Co,Ni,Fe)(Cr,Al)
 
2
O
 
4
Coulsonite
Fe
2+
 
V
3+
2
O
 
4
Cuprospinel
Cu
2+
 
Fe
3+
2
O
 
4
Filipstadite
(Mn,Mg)
 
2
(Sb
 
.5
Fe
 
.5
)O
 
4
Franklinite
Zn
2+
 
Fe
3+
2
O
 
4
Gahnite
ZnAl
 
2
O
 
4
Galaxite
(Mn,Fe,Mg)(Al,Fe)
 
2
O
 
4
Hercynite
Fe
2+
 
Al
 
2
O
 
4
Magnesiochromite
Mg(Cr,Al,Fe)
 
2
O
 
4
Magnesiocoulsonite
MgV
 
2
O
 
4
Magnesioferrite
MgFe
3+
2
O
 
4
Magnetite
Fe
2+
 
Fe
3+
2
O
 
4
Manganochromite
(Mn,Fe)(Cr,V)
 
2
O
 
4
Nichromite
(Ni,Co,Fe)(Cr,Fe,Al)
 
2
O
 
4
Qandilite
(Mg,Fe)
 
2
(Ti,Fe,Al)O
 
4
Spinel
MgAl
 
2
O
 
4
Trevorite
Ni
2+
 
Fe
3+
2
O
 
4
Ulvöspinel
Fe
 
2
TiO
 
4
Vuorelainenite
(Mn,Fe)(V,Cr)
 
2
O
 
4
Zincochromite
ZnCr
 
2
O
 
4
Related Minerals - Nickel-Strunz Grouping):

- +
4.BB.05Brunogeierite
Fe
2+
2
Ge
4+
 
O
 
4
4.BB.05Chromite
Fe
2+
 
Cr
3+
2
O
 
4
4.BB.05Cochromite
(Co,Ni,Fe)(Cr,Al)
 
2
O
 
4
4.BB.05Coulsonite
Fe
2+
 
V
3+
2
O
 
4
4.BB.05Cuprospinel
Cu
2+
 
Fe
3+
2
O
 
4
4.BB.05Filipstadite
(Mn,Mg)
 
2
(Sb
 
.5
Fe
 
.5
)O
 
4
4.BB.05Franklinite
Zn
2+
 
Fe
3+
2
O
 
4
4.BB.05Gahnite
ZnAl
 
2
O
 
4
4.BB.05Galaxite
(Mn,Fe,Mg)(Al,Fe)
 
2
O
 
4
4.BB.05Hercynite
Fe
2+
 
Al
 
2
O
 
4
4.BB.05Manganochromite
(Mn,Fe)(Cr,V)
 
2
O
 
4
4.BB.05Magnesiocoulsonite
MgV
 
2
O
 
4
4.BB.05Magnesiochromite
Mg(Cr,Al,Fe)
 
2
O
 
4
4.BB.05Magnesioferrite
MgFe
3+
2
O
 
4
4.BB.05Magnetite
Fe
2+
 
Fe
3+
2
O
 
4
4.BB.05Nichromite
(Ni,Co,Fe)(Cr,Fe,Al)
 
2
O
 
4
4.BB.05Qandilite
(Mg,Fe)
 
2
(Ti,Fe,Al)O
 
4
4.BB.05Spinel
MgAl
 
2
O
 
4
4.BB.05Trevorite
Ni
2+
 
Fe
3+
2
O
 
4
4.BB.05Ulvöspinel
Fe
 
2
TiO
 
4
4.BB.05Vuorelainenite
(Mn,Fe)(V,Cr)
 
2
O
 
4
4.BB.05Zincochromite
ZnCr
 
2
O
 
4
4.BB.10Hausmannite
MnMn
 
2
O
 
4
4.BB.10Hetaerolite
ZnMn
 
2
O
 
4
4.BB.10Hydrohetaerolite
ZnMn
 
2
O
 
4
 · H
 
2
O
4.BB.10Iwakiite
Mn(Fe,Mn)
 
2
O
 
4
4.BB.15Maghemite
Fe
3+
2
O
 
3
4.BB.15Titanomaghemite
Fe
3+
 
(Fe
3+
 
,Ti
4+
 
,Fe
2+
 
,◻)
 
2
O
 
4
4.BB.20Tegengrenite
(Mg,Mn
2+
 
)
 
2
Sb
5+
0.5
(Mn
3+
 
,Si,Ti)
 
0.5
O
 
4
4.BB.25Xieite
Fe
2+
 
Cr
 
2
O
 
4
Related Minerals - Hey's Index Grouping:

- +
7.19.1Bixbyite
(Mn
3+
 
,Fe
3+
 
)
 
2
O
 
3
7.19.2Janggunite
Mn
 
5-x
(Mn,Fe)
 
1+x
O
 
8
(OH)
 
6
7.19.4Vernadite
(Mn
4+
 
,Fe
3+
 
,Ca,Na)(O,OH)
 
2
 · nH
 
2
O
7.19.5Galaxite
(Mn,Fe,Mg)(Al,Fe)
 
2
O
 
4
7.19.6Filipstadite
(Mn,Mg)
 
2
(Sb
 
.5
Fe
 
.5
)O
 
4
7.19.7Manganochromite
(Mn,Fe)(Cr,V)
 
2
O
 
4
7.19.8Zenzénite
Pb
 
3
(Fe,Mn)
 
4
Mn
 
3
O
 
13

Other Names for Jacobsite

Other Languages:
German:Jacobsit
Jakobsit
Russian:Якобсит
Simplified Chinese:黑镁铁锰矿
锰铁矿
Spanish:Jacobsita

Other Information

Fluorescence in UV light:None
Magnetism:Diamagnetic
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 Jacobsite

Reference List:

- +
Damour (1869), C.R.: 69: 168.

Flink (1886), Ak. Stockholm Bh.: 12(2): 2, 20.

Fermor (1909), Geological Survey of India, Rcords: 37: 199.

Johansson (1928), Zs. Kr.: 68: 107.

Orcel and Pavlovitch (1932), Bull. soc. min.: 54: 108.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I: 698-707.

Journal of Physics and Chemistry of Solids (1962): 23: 1661.

Essene, E.J. and Peacor, D.R. (1983) Crystal chemistry and petrology of coexisting galaxite and jacobsite and other spinel solutions and solvi. American Mineralogist: 68: 449-455.

Internet Links for Jacobsite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Jacobsite details from Handbook of Mineralogy (PDF)
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    • Localities for Jacobsite

    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.
    Hide Locality List
    (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.
    Australia
     
    • New South Wales
      • Yancowinna Co.
    		Ramdohr, P. (1950): Contributions to Mineralogy and Petrology 2(4), 291-333.
    • South Australia
      • Eyre Peninsula
        • Middleback Range
          • Iron Knob
    		No reference listed
    Austria
     
    • Salzburg
      • Hohe Tauern
        • Kaprun valley
          • Mooserboden reservoir
    		A. Strasser: Die Minerale Salzburgs (1989)
      • Lungau
        • Taurach valley
          • Fuchs Alp - Fuchs lake area (incl. Schwarz Alp; Schwarz lake; Kohlsberg Alp)
    		A. Strasser: Die Minerale Salzburgs (1989)
    • Styria
      • Mitterdorf
        • Veitsch
          • Kleinveitsch
            • Kaiblinggraben
    		http://www.franzbernhard.x10hosting.com/polishedslabs.html
    • Tyrol
      • East Tyrol
        • Kals valley
    		Neinaveie, M. H. (1979): Schichtgebundene Metallanreicherungen in den Schieferhüllen und in der Matreier Zone Osttirols. Unpubl. Dissertation, Universität Innsbruck, xx pp.
    Brazil
     
    • Bahia
      • Urandi
    		Varentsov, I.M. (1996): Manganese ores of supergene zone: Geochemistry of formation. Springer (Berlin, Heidelberg, New York), 342 pp.
    Canada
     
    • Ontario
      • Kenora District
    		Geoffrey Khalil Abdallah (1990) Ore Mineralogy of Mattabi Mine, Northwestern Ontario, Canada. MSC Thesis, Lakehead University
    China
     
    • Guangxi Zhuang Autonomous Region
      • Chongzuo Prefecture
        • Daxin Co.
    		Dairong Yan, Jianwei Li, Mingan Hu, and Yinsheng Lang (2006): Geological Science and Technology Information 25(3), 61-67.
    • Hainan Province (Hainan Island)
      • Baoting Co.
    		Liangkai Gu (1986): Geology and Prospecting 22(1), 15-18
    • Hubei Province
      • Huanggang Prefecture
        • Luotian Co.
          • Hejiawan
    		Jingqu Yao (1992): Acta Petrologica et Mineralogica 11(3), 257-266
    Jingqu Yao (1992): Acta Petrologica et Mineralogica 11(3), 257-266
      • Wuhan Prefecture
        • Huangpi District
    		Jingqu Yao (1992): Acta Petrologica et Mineralogica 11(3), 257-266
    • Liaoning Province (Manchuria; Dongbei Region)
      • Chaoyang Prefecture
        • Chaoyang Co.
    		Fan Delian, Li Jiaju, Ye Jie, Hariya, Y., and Miura, H. (1992): Some new data on manganese silicate-manganese oxide ores from ferro-manganese ore deposit Wafangzi, PRC (abstract). 29th international geological congress (Kyoto, 24 August - 3 September 1992).
    • Yunnan Province
      • Dali Autonomous Prefecture
        • Heqing Co.
    		Yuchun Yang (1990): Geology and Prospecting 26(8), 20-23
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Kutná Hora (Kuttenberg)
    		No reference listed
    France
     
    • Lorraine
      • Vosges
        • Gérardmer
    		Weil, R. & Siat, A. (1958): Characteristics of the Haut-Poirot manganese deposit. Compt. rend. 247, 937-940 (in French).
    • Midi-Pyrénées
      • Haute-Garonne
        • Argut-Dessus
    		 Inventaire minéralogique de la France numero 8 Haute Garonne pages 20 et 21
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Laach lake volcanic complex
          • Kruft
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage), 1987
          • Mendig
            • Niedermendig
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage), 1987
    [Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage), 1987] [Mineralien Welt 1/93:14]
              • Wingertsberg
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage), 1987
        • Mayen
          • Ettringen
            • Bellerberg volcano
    		[Blass, G., Graf, H.W., Über neue Mineralien vom Bellerberg, Eifel Mineralien-Welt 5/6, 53, 1994] [A. Wittern: Mineralfundorte in Deutschland, Schweizerbart (Stuttgart), 2001]
    Ghana
     
    • Western Region
      • Tarkwa
    		Mücke, A., Dzigbodi-Adjimah, K., and Annor, A. (1999): Mineralium Deposita 34, 297-311.
    India
     
    • Andhra Pradesh
      • Vizianagaram District
    		Econ Geol (1980) 75:1083-1104
    Econ Geol (1980) 75:1083-1104
    Econ Geol (1980) 75:1083-1104
    • Karnataka
      • Bellary district
        • Bellary-Hospet iron belt
          • Sandur
    		Rao, J. S. R. K., Naidu, B. V. & Rao, K. V. (1979): Ore microscopic, x-ray and trace elemental data on manganese ores from Sandur, Karnataka, India. Acta Mineralogica-Petrographica 24, 91-97.
    • Madhya Pradesh
      • Jabalpur Division
        • Chhindwara District (Chindawara District; Chindwara District)
    		Roy, S., and Purkait, P.K. (1968): Contributions to Mineralogy and Petrology 20, 86-114.
      • Jhabua District
    		Am Min 90:2-3 pp304-309
    • Maharashtra
      • Bhandara District
    		MINERALOGICAL MAGAZINE, DECEMBER 1984, VOL. 48, PP. 558-60; MINERALOGICAL MAGAZINE, DECEMBER 1984, VOL. 48, PP. 558-60
    Mineralogical Magazine 1968 36 : 1034-1036.
    • Orissa
      • Koraput District
    		Acharya, B.C., Rao, D.S., and Sahoo, R.K. (1997): Mineralium Deposita 32, 79-93.
      • Sundargarh District (Sundergarh District)
    		Nicholson, K., Nayak, V. K., Nanda, J. K. (1997): Manganese ores of the Ghoriajhor-Monmunda area, Sundergarh District, Orissa, India: geochemical evidence for a mixed Mn source. Geological Society Special Publication 119 (Manganese Mineralization: Geochemistry and Mineralogy of Terrestrial and Marine Deposits), 117-121.
    Israel
     
    AmMin 45:734
    Italy
     
    • Aosta Valley
      • Saint-Marcel
    		Eur. J. Mineral 18:569–582 (2006)
    • Lombardy
      • Sondrio Province
        • Malenco Valley
    		AA. VV., 1996. Collezionare minerali. Hobby & Work.
    • Sardinia
      • Sassari Province
        • Uri
    		Fadda, A.F.(1989): Sardegna pietre dure e minerali. CO.EDI.SAR. Cagliari
    Japan
     
    • Honshu Island
      • Chubu Region
        • Aichi Prefecture
          • Kita-Shidara-gun
            • Shidara-cho
    		Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
        • Fukui Prefecture
          • Mikata-kaminaka-gun
            • Wakasa-cho
    		Kato, A. (2010) Mumeikai Group meeting, No. 30.
        • Nagano Prefecture
          • Kami-Ina-gun
    		Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
    Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 20011).
    Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 20011).
      • Chugoku Region
        • Yamaguchi Prefecture
          • Iwakuni City
    		Am Min (1955) 40:32-40
      • Kanto Region
        • Gunma Prefecture
          • Kiryuu City
    		Minerals in Japan (Field Best Encyclopedia V. 15, 2003)
          • Midori City
    		Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
    University of Tokyo collection
        • Saitama Prefecture
          • Chichibu City
            • Urayama
    		K. Nishikubo, T. Yamada, A. Harada, M. Takizawa, K. Tange, Y. Kosuge, R. Miyawaki, and S. Matsubara (2005) "Rambergite from the Hirogawara mine, Urayama, Chichibu City, Saitama Prefecture, Japan"
          • Hannou
    		Kato, A. (2010) Mumeikai Group meeting, No. 30.
        • Tochigi Prefecture
    		Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
    Hiroaki Tano specimens
          • Kanuma City
    		Akira Kato (undated manuscript): Country rock and Minerals of the Kaso mine, Kanuma City, Tochigi Prefecture. (in japanese)
    University of Tokyo collection
    Alfredo Petrov collection.
    University of Tokyo collection
        • Tokyo Prefecture
          • Nishi-Tama-gun
            • Okutama-cho
    		N. Aikawa (1987) Journal of Geosciences, Osaka City University, 30, 1-13.
      • Kinki Region
        • Kyoto Prefecture
          • Kita-Kuwata-gun
    		Masutomi Museum specimens (Kyoto)
          • Sohraku-gun
        • Shiga Prefecture
          • Otsu City
    		Masutomi Museum specimen (Kyoto)
          • Ritto-cho
    		Katsu Kaneko (1956) Symposium del Manganeso, XX Congreso Geologico Internacional, Mexico D.F.
          • Takashima City
    		Masutomi Museum specimen (Kyoto)
        • Wakayama Prefecture
          • Tanabe City
    		Masutomi Museum specimen (Kyoto)
      • Tohoku Region
        • Fukushima Prefecture
          • Iwaki City
    		Mineralogical Journal Vol. 18 (1996) , No. 4 pp 155-160
        • Iwate Prefecture
          • Karumai
    		Nambu ore collection (curated at Geological Survey of Japan)
          • Kuji City
            • Yamagata
    		Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)
    Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
          • Kuzumaki
    		Tanida, K. & Kitamura, T. (1982) Mineralogy and thermal transformation of kutnahorite from Fujikura mine, Iwate Prefecture, with the subsolidus relation of system CaO-manganese oxide…. J. Japan Ass. Min. Petr. & Econ. Geol., 77, 227-234
          • Morioka
    		Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
          • Noda
    		Watanabe, T. (1959) Mineralogical Journal, 2, 6, 408-421
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
          • Shimohei-gun
    		Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Dr. Matsuo Nambu collection (curated by the Geological Survey of Japan)
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
            • Yamada
    		Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan)
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    • Kyushu Region
      • Fukuoka Prefecture
    		Dr. Yohachiro Okamoto collection (curated at Geological Survey museum, Japan)
      • Saga Prefecture
    		Okamoto collection (curated at the Geological Survey museum, Japan)
    • Shikoku Island
      • Kochi Prefecture
    		Takabatake, A. (1956) Symposium sobre yacimientos de manganeso. Vol. 4, 207ff (Mexico, 1956)
    Kazakhstan
     
    • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
      • Atasu
    		Kayupova, M. M. (1963): Mineralogy of the Dzhumart iron-manganese deposit. Izvestiya Akademii Nauk Kazakhskoi SSR, Seriya Geologicheskaya, 1963 (6), 57-80.
      • Zhayrem (Zhairem)
    		Kayupova, M.M. (1965) Doklady of the Academy of Sciences U.S.S.R., Earth Science sections, 163, 97-100.; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
    Frank Dzubeck
    Mongolia
     
    • Sühbaatar Aimag (Sükhbaatar Aimag)
      • Baruun-Urt
    		Gottesmann, W. et al. (2009): N. Jb. Mineral. 185, 249-280
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
    		No reference listed; No literature reference
    • Tadla-Azilal Region
      • Azilal Province
    		Varentsov, I.M. (1996): Manganese ores of supergene zone: Geochemistry of formation. Springer (Berlin, Heidelberg, New York), 342 pp.
    Namibia
     
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    		Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425. American Mineralogist, Volume 73, pages 888-893, 1988
    Bezing, L. von, Bode, R. & Jahn, S. (2007): Namibia. Minerals and Localities. Edition Schloss Freudenstein, Bode Verlag, Haltern, 368 pp. (in English)
    Norway
     
    • Nordland
      • Hinnøya
        • Lødingen
    		Krogh, E.J. (1977): Origin and metamorphism of iron formations and associated rocks, Lofoten-Vesterålen, N. Norway. I. The Vestpolltind Fe-Mn-deposit. Lithos, 10: 243-255
    • Telemark
      • Tokke
        • Botnedal
    		Westerweld, J. (1961): The Manganese vein of Mount Brandsnuten, Botnedal, South Norway. Norges Geologiske Undersøkelse 213, 202-223
    Republic of Macedonia
     
    • Kratovo-Zletovo ore District
    		Bulletin of the Chemists and Technologists of Macedonia, Vol. 23, No. 2, pp. 171–184 (2004); RMZ - Materials and Geoenvironment Vol 52 No. 3 pp 535-548 (2006)
    Romania
     
    • Maramureș Co.
    		http://minerals-of-the-carpathians.eu
    • Suceava Co.
      • Suceava district
        • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
    		http://minerals-of-the-carpathians.eu
    Slovakia
     
    • Košice Region
      • Rožňava Co.
    		Ozdín, D., Uher, P. (2010): Jakobsit pri Dobšinskej ľadovej jaskyni-mýtus alebo realita? Minerál, 18, 4, 363-365.
    South Africa
     
    • Northern Cape Province
      • Kalahari manganese fields
        • Hotazel
    		MinRecord 9:137-153
    Minerals of South Africa
        • Kuruman
          • N'Chwaning Mines
    		Minerals of South Africa
    Econ Geol (1987) 82:706-718
    Sudan
     
    • Al Bahr al Ahmar Wilayah
      • Red Sea Hills
        • Derudeb District
    		http://www.gras-sd.com/products/bro_basemetel.htm
    Sweden
     
    • Dalarna
      • Hedemora
        • Garpenberg
    		Min Mag 66 (2) 2002, 353-364
    • Dalsland
      • Åmål
        • Strandhem ore field
    		K.Gatedal
    • Värmland
      • Filipstad
    		Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
        • Nordmark (Nordmarksberg)
    		Dunn,P.J., Peacor, D.R., Valley, J.W. and Randall, C.W. (1985): Ganomalite from Franklin, New Jersey, and Jakobsberg, Sweden: New Chemical and Crystallographic Data. Mineralogical Magazine. 49: 579-582
    Mineralogical Magazine (1998) 62 (3), 395-407
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 778.
        • Persberg district
          • Pajsberg
    		Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
    No reference listed
    • Västmanland
      • Hällefors
        • Grythyttan
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 857.
      • Lindesberg
    No reference listed
    Holtstam, D. (1997): Barian magnetoplumbite from Mangruvan, Orebro, Sweden. GFF 119, 17-19.
      • Norberg
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Hinterrhein Valley
        • Ferrera Valley
          • Ausserferrera
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 211.
          • Starlera Valley
    		Brugger J. (1996): The Fe, Mn, (V, Sb, As, Be, W) deposits of Val Ferrera (Graubünden, Switzerland). Unpublished PhD Thesis, Univ. Basel. 188 p.
      • Puschlav (Poschiavo Valley)
    		Romani E. (2000): Andar per cristalli - Tesori nascosti. Centro studi del Museo mineralogico naturalistico di Bormio, 151 p.
    • St Gallen
      • Alvier Group
        • Sargans
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 227.
    • Wallis (Valais)
      • Turtmann Valley
        • Pipjitälli
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 227.; Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
      • Zermatt - Saas Fee area
        • Matt Valley
          • Täsch Valley
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 30-31
    Turkey
     
    • Aegean Region
      • Denizli Province
        • Kale
    		Öztürk, H. (1997): Ore Geology Reviews 12, 187-203.
    UK
     
    • Wales
      • Gwynedd (Caernarvonshire)
        • Lleyn Peninsula
          • Llanfaelrhys
            • Nant-y-Gadwen
    		Cotterell, T.F., 2006. Caryopilite and pyroxmangite from Nant Mine, Nant-y-Gadwen, Llanfaelrhys, Pen Llyn, Gwynedd, Wales UK Journal of Mines and Minerals, 27, 51-53.
            • Rhiw
    		No reference listed
    USA
     
    • Arizona
      • Cochise Co.
        • Mule Mts
          • Warren District
            • Bisbee
              • Escabrosa Ridge
    		Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 5.
    • California
      • Nevada Co.
    		Econ Geol (1992) 87:2023-2040
      • Trinity Co.
        • Klamath Mts
          • Trinity Mts
            • Altoona District
              • Boulder Peak
    		USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10141537.
    • Connecticut
      • Middlesex Co.
        • Haddam
    		Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut minerals.
    • Georgia
      • Cherokee Co.
        • Woodstock
    		Rocks & Min.:64:189; Shearer & Hull(1918).
    • Massachusetts
      • Hampshire Co.
        • Plainfield
    		"Western Massachusetts Mineral Localities" by Alan Plante, Valley Geology Press, 1992.
    • Michigan
      • Iron Co.
        • Menominee iron range
          • Mineral Hills
            • Homer-Wauseca Group
    		Shawn Carlson (2010) Mineral News, 26, #11, 1-2 & 9-10.
    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.
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Frondel, C. & Klein,C., Jr.: Am.Min.:50:1670-1680 (1965); McSween, H.Y., Jr.: Econ. Geology:71:814-817 (1976); Dunn(1995):Pt4:581-582.
    • North Carolina
      • Alleghany Co.
        • Sparta
          • Bald Knob
    		Rocks & Min.: 60:130-135.
    • Virginia
      • Pittsylvania Co.
        • James River-Roanoke River Mn-Fe-Ba District
    		AmMin 88:740-747 (2003)
    • Washington
      • Clallam Co.
        • Sappho
    		Minerals of Washington, Bart Cannon, 1975
        • Snyder Ranger Station
          • Littleton Creek
    		Minerals of Washington, Bart Cannon, 1975
      • Jefferson Co.
        • Mount Claywood
    		 Minerals of Washington, Bart Cannon 1975
        • Mount Jupiter
          • Elkhorn Group
    		Minerals of Washington, Bart Cannon, 1975
    Minerals of Washington, Bart Cannon, 1975
      • Mason Co.
        • Copper Creek (Boulder Creek)
    		Minerals of Washington, Bart Cannon, 1975
        • Hoodsport
          • Lake Cushman
    		Minerals of Washington, Bart Cannon, 1975
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