Romanèchite
A valid IMA mineral species - grandfathered
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About Romanèchite
View of the Romanèche-Thorins Mine, ca. 1905.
Manganese deposit, Romanèche-Thorins, La Chapelle-de-Guinchay, Mâcon, Saône-et-Loire, Bourgogne-Franche-Comté, France
Manganese deposit, Romanèche-Thorins, La Chapelle-de-Guinchay, Mâcon, Saône-et-Loire, Bourgogne-Franche-Comté, France
Formula:
(Ba,H2O)2(Mn4+,Mn3+)5O10
Colour:
Greyish black, black
Lustre:
Sub-Metallic, Dull
Hardness:
5 - 6
Crystal System:
Monoclinic
Name:
Named after its discovery locality, Romanèche, Saône-et-Loir, France.
Chemically similar to hollandite.
May be confused with members of the Cryptomelane Group.
Visit gemdat.org for gemological information about Romanèchite.
May be confused with members of the Cryptomelane Group.
Visit gemdat.org for gemological information about Romanèchite.Unique Identifiers
Mindat ID:
3441
Long-form identifier:
mindat:1:1:3441:4
IMA Classification of Romanèchite
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Romanèchite
4.DK.10
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
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
7.9.2.1
7 : MULTIPLE OXIDES
9 : AB8X16
7 : MULTIPLE OXIDES
9 : AB8X16
7.4.18
7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Rmn | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Rmn | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Physical Properties of Romanèchite
Chemistry of Romanèchite
Mindat Formula:
(Ba,H2O)2(Mn4+,Mn3+)5O10
Element Weights:
Elements listed:
Crystallography of Romanèchite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 13.929(1) Å, b = 2.8459(4) Å, c = 9.678(1) Å
β = 92.39(1)°
β = 92.39(1)°
Ratio:
a:b:c = 4.894 : 1 : 3.401
Unit Cell V:
383.31 ų (Calculated from Unit Cell)
Z:
2
Twinning:
Sagenite-like twinning of acicular to prismatic crystals has been observed.
Comment:
Space group C2/m
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.465 Å | (70) |
| 2.875 Å | (70) |
| 2.415 Å | (70) |
| 2.190 Å | (100) |
| 1.820 Å | (70) |
| 1.560 Å | (70) |
| 1.399 Å | (70) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 49 : Oxic cellular biomineralization (see also #44) | <0.54 |
Type Occurrence of Romanèchite
Synonyms of Romanèchite
Other Language Names for Romanèchite
Varieties of Romanèchite
| Skemmatite | Apparent mixture of ferroan romanechite and pyrolusite, once believed to be a direct alteration product of pyroxmangite and considered by Dana and others as a ferrian wad. |
Common Associates
Associated Minerals Based on Photo Data:
| 53 photos of Romanèchite associated with Todorokite | (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O |
| 49 photos of Romanèchite associated with Birnessite | (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O |
| 34 photos of Romanèchite associated with Pyrolusite | Mn4+O2 |
| 27 photos of Romanèchite associated with Baryte | BaSO4 |
| 26 photos of Romanèchite associated with Rhodochrosite | MnCO3 |
| 17 photos of Romanèchite associated with Calcite | CaCO3 |
| 13 photos of Romanèchite associated with Goethite | Fe3+O(OH) |
| 12 photos of Romanèchite associated with Quartz | SiO2 |
| 9 photos of Romanèchite associated with Campylite | Pb5(AsO4)3Cl |
| 8 photos of Romanèchite associated with Palygorskite | ◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
Related Minerals - Strunz-mindat Grouping
| 4.DK.K | Thalliomelane | Tl(Mn4+7.5Cu2+0.5)O16 |
| 4.DK. | Ferrihollandite | Ba(Mn4+6Fe3+2)O16 |
| 4.DK.4.DK. | Ferricoronadite | Pb(Mn4+6Fe3+2)O16 |
| 4.DK.05a | Manjiroite | Na(Mn4+7Mn3+)O16 |
| 4.DK.05b | Mannardite | Ba(Ti4+6V3+2)O16 |
| 4.DK.05b | Redledgeite | Ba(Ti4+6Cr3+2)O16 |
| 4.DK.05 | Akaganeite | (Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2O |
| 4.DK.05a | Coronadite | Pb(Mn4+6Mn3+2)O16 |
| 4.DK.05a | Hollandite | Ba(Mn4+6Mn3+2)O16 |
| 4.DK.05a | Cryptomelane | K(Mn4+7Mn3+)O16 |
| 4.DK.05a | Strontiomelane | Sr(Mn4+6Mn3+2)O16 |
| 4.DK.05b | Henrymeyerite | Ba(Ti4+7Fe2+)O16 |
| 4.DK.05b | Priderite | K(Ti4+7Fe3+)O16 |
| 4.DK.10 | Todorokite | (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O |
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.
Internet Links for Romanèchite
mindat.org URL:
https://www.mindat.org/min-3441.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Romanèchite
Localities for Romanèchite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Angola | |
| Beleque (2010) |
Argentina | |
| 4 Congreso Nacional y 1 Congreso ... +1 other reference |
| Ronald G. Simpson (2017) +1 other reference |
Australia | |
| Michael Hirst Collection |
| Ashley et al. (1997) |
| Osborne et al. (2006) |
| Worner et al. (et al) |
| Dammer et al. (1996) |
| |
| Jones et al. (2013) |
| Putzolu et al. (2018) |
| Simpson (1952) |
| The Simpson Mineral Collection of the ... |
Austria | |
| |
| European Journal of Mineralogy 17 (1) | |
| |
| Kolitsch et al. (2012) |
| Pichler (2009) |
| |
| Bernhard (2015) |
| Postl et al. (1996) |
| Schnorrer et al. (2002) |
| Der Aufschluß (2006) |
| Schnorrer et al. (2007) |
Brazil | |
| Applied Earth Science : IMM Transactions section B et al. (8) |
| Cabral et al. (2002) |
| Cabral (2006) |
Bulgaria | |
| Banushev et al. (1994) |
| Petrov et al. (xxxx) +1 other reference |
| Neues Jahrbuch für Mineralogie - Monatshefte et al. (10) |
| Svetla Atanassova |
Chile | |
| XRD by Joachim Lorenz |
China | |
| Jingqu Yao (1992) |
| Jingqu Yao (1992) | |
| Jingqu Yao (1992) |
| Xiang Gao et al. (2003) |
| |
| |
| Du +6 other references |
Cuba | |
| Jeff Weisman |
Egypt | |
| Salama et al. (2012) |
| Afify et al. (2022) |
Ethiopia | |
| Tadesse et al. (2003) |
Finland | |
| Ilkka Mikkola collection |
| Hytönen (1999) |
France | |
| Wittern et al. (1997) |
| Perseil (1975) | |
| Perseil (1975) | |
| Palache et al. (1951) +1 other reference |
| Wittern et al. (1997) |
| Wittern et al. (1997) |
| Hohl (1994) +1 other reference |
| Hohl (1994) +1 other reference | |
| Wittern et al. (1997) |
| Wittern et al. (1997) |
| Wittern et al. (1997) |
| Wittern et al. (1997) |
| Wittern et al. (1997) | |
| Wittern et al. (1997) | |
| Hohl (1994) |
Germany | |
| Weiß (1990) |
| Brill et al. (2017) |
| Walenta (1991) +1 other reference |
| Walenta (1992) |
| Gröbner (2003) |
| |
| Falkenstein (2010) |
| Wittern (2001) |
| Wittern (2001) | |
| Walenta (1992) | |
| Weiß (1990) |
| Habel (2009) |
| Joachim Lorenz (http://www.spessartit.de/271.htm) |
| Erik Hock |
| Lorenz (2004) |
| 70. +1 other reference |
| Lorenz (2003) |
| https://www.mineralienatlas.de/?l=4860 |
| Lorenz et al. (2007) |
| Weiß (1990) |
| Wittern (2001) |
| Hanneberg et al. (2009) +1 other reference |
| Wittern (2001) |
| Wittern (2001) |
| Lapis 34 (7-8) |
| Petitjean et al. (2007) |
| |
| PETITJEAN collection |
| Petitjean (2004) |
| Schnorrer et al. (2009) |
| Schnorrer et al. (2002) +1 other reference |
| Schnorrer (1995) +1 other reference |
| Bode et al. (1989) |
| Weiß (1990) |
| Lapis 1979 (10) |
| 58. +1 other reference |
| Blaß et al. (1993) |
| Lapis 2003 (2) |
| Massanek et al. (2005) |
| Hajek (2010) |
| Massanek et al. (2005) |
| Massanek et al. (2005) | |
| Massanek et al. (2005) |
| Massanek et al. (2005) | |
| Massanek et al. (2005) | |
| collection H.J. Haas |
| Jahn (1999) |
| XRD and SEM-EDX analysis (T. Witzke) |
| Wittern (2001) |
| Wittern (2001) |
| Wittern (2001) |
| Gröbner et al. (2008) |
| Wittern (2001) | |
| Gröbner et al. (2008) |
| Wittern (2001) |
Ghana | |
| Mücke et al. (1999) |
Greece | |
| |
| LAPIS 24 (7/8) +1 other reference | |
| Rieck (n.d.) |
| Stouraiti et al. (2022) |
| Bracke (n.d.) |
| |
Hungary | |
| Bujtor et al. (2024) |
| Szakáll: Minerals of Rudabánya |
| Szakáll: Minerals of Rudabánya | |
| Szakáll: Minerals of Rudabánya | |
| Sándor et al. (2005) |
| Szakáll et al. (1996) |
| Szakáll & Jánosi: Minerals of Hungary |
| Sándor et al. (2005) |
| Sándor et al. (2005) |
| www.mineralienfreunde.de (2003) |
| Koch (1985) |
| Sándor et al. (2005) | |
India | |
| Yadav (2022) |
| Acharya et al. (1997) |
Iraq | |
| Yassin et al. (Eds.) |
Ireland | |
| XRD & electron probe analysis by Drs ... |
Italy | |
| Pagano et al. (2001) |
| Redazionale (2005) | |
| Balestra (2016) | |
| Redazione (2005) |
| Balestra (2016) |
| Balestra et al. (2020) |
| Bedognè et al. (1993) +1 other reference |
| Matteo Giai et al. (2023) +1 other reference |
| Parola et al. (2023) +1 other reference |
| Piccoli et al. (2007) |
| Piccoli et al. (2007) |
| Stara et al. (1996) |
| Stara et al. (1996) |
| Stara et al. (1994) | |
| Stara et al. (1996) |
| Stara et al. (1996) |
| Stara et al. (1996) | |
| Stara et al. (1996) |
Japan | |
| Nakagawa et al. (2009) |
| Nambu et al (1961) |
Jordan | |
| Fleurance et al. (2013) |
Luxembourg | |
| MnhnL collection |
| Philippo Simon (éditeur) |
Mexico | |
| RODRIGUEZ-DIAZ |
| Rodriguez et al. (2019) |
| Conly et al. (2011) |
| Panczner (1987) |
| Fabre (n.d.) |
| Dr. Jeffrey Post |
| Panczner (1987) |
| Martins da Pedra collection |
| Rocks & Min.: 56:247. | |
| Panczner (1987) | |
| Panczner (1987) |
| Panczner (1987) | |
| Panczner (1987) | |
| Panczner (1987) |
| Panczner (1987) | |
| Panczner (1987) | |
| Panczner (1987) |
| Ref.: Revista Mexicana de Ciencias Geológicas et al. (2000) |
| Daniel Hummer Collection | |
Namibia | |
| Paul Meulenbeld |
| von Bezing (2007) |
Norway | |
| Rune S. Selbekk (2010) |
| Breivik et al. (2007) |
| Rune S. Selbekk (2010) |
| Rune S. Selbekk (2010) |
| Folvik (2005) |
| Rune S. Selbekk (2010) |
| Rune S. Selbekk (2010) |
| Onac et al. (1995) | |
| Alf Olav Larsen collection & NHM Vienna collection (PXRD- or SXRD-analysed) +1 other reference |
Paraguay | |
| Eckel et al. (1959) |
Poland | |
| Szakáll (2002) |
| Krajewski R. | |
| Paulo A. 1970: Minerały niklu i bizmutu w żyłach kruszcowych okolicy Chełmca (Góry Kaczawskie, Dolny Śląsk) |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Kruszewski et al. (2019) |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Pieczka (2006) |
| Pieczka et al. (2001) | |
| Mochnacka et al. (2000) |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Lis et al. (1986) |
| Lis et al. (1986) | |
| Kulig M. 1972: Hydrohetaerolite from the Orzeł Biały mine (Upper Silesia) |
Portugal | |
| Azevedo (2024) |
| Alves (n.d.) |
| Sitio do Cobre mine |
Romania | |
| Onac et al. (2002) |
| minerals-of-the-carpathians.eu (2008) |
| Hîrtopanu (1997) +1 other reference |
Russia | |
| Vera N. Smol'yaninova data |
| Varentsov (1996) |
| Kislov (2024) |
| Dolgov et al. (2007) |
| Sharygin +11 other references |
| Yakovenchuk et al. (2024) |
| Ivanyuk et al. (2006) |
| Sharkov (2009) |
| Kasatkin et al. (2021) |
Slovakia | |
| Pauliš |
| Pauliš | |
| Ďuďa R. et al. (1993) | |
| Grecula (1995) |
| Koděra (1986) |
| Pauliš et al. (2002) |
| Pauliš et al. (2002) |
| Koděra (1986) | |
| Koděra (1986) |
| Koděra (1986) | |
| Koděra (1986) | |
| Koděra (1986) | |
| Koděra (1986) | |
| Pauliš et al. (2002) | |
| Števko M. et al. (2017) |
| Koděra (1986) |
| Koděra (1986) |
| Duda et. all. |
| Ďuďa R. (2001) | |
| Rojkovič I. et al. (2003) |
| Ďuďa |
| Rojkovič et al. (2003) |
| Rojkovič et al. (2003) |
| Mišík |
| Rojkovič et al. (2003) |
| Rojkovič et al. (2003) |
| Rojkovič et al. (2003) | |
| Mišík |
| Rojkovič et al. (2003) |
South Africa | |
| Heron (1992) |
| Gutzmer (1996) |
| Gutzmer (1996) | |
| Mineralogical Magazine (1997) |
| Preston (2009) +1 other reference |
| Cairncross et al. (1995) |
Spain | |
| Jorge (2000) +1 other reference |
| Calvo (2008) |
| Calvo (2009) |
| Onac et al. (2014) |
| Carles Curto Milà specimen |
| Joan Abella i Creus (2008) |
| Martins da Pedra collection |
| Mining Museum in La Union collection |
| Joan Rosell - rosellminerals.com |
| Martins da Pedra collection |
| Calvo (1996) +1 other reference |
| Richard Dale Collection |
Sweden | |
| |
| Wilke (1997) |
| |
Switzerland | |
| Romani E. (2000) |
| Romani (2000) |
| Romani (2000) | |
| Romani (2000) | |
| Romani (2000) | |
| Romani (2000) | |
Turkey | |
| Öztürk et al. (1995) |
UK | |
| - (2003) |
| - (2006) +1 other reference | |
| Cooper et al. (1990) +1 other reference | |
| - (2006) | |
| - (2006) |
| Green et al. (2008) | |
| - (2008) | |
| Stanley et al. (1991) | |
| Day (1999) |
| Turner (2006) +1 other reference |
| Day (1999) |
| Criddle et al. (1977) |
| |
Ukraine | |
| Chukhrov F.V. et al. (1987) |
| Varentsov (1996) |
| Varentsov (1996) |
USA | |
| Gary McWilliams |
| Mike Scott S104297 from Cureton #FWB ID ... |
| PMB collection |
| Mineral collected by Robert E. Pederson |
| Garske (n.d.) | |
| Luetcke (n.d.) |
| Wilkinson et al. (1983) |
| Brian Beck Collected |
| Brian Beck collected | |
| Rocks & Min.: 63:118. |
| Smith (1988) |
| Dan Weinrich photo |
| Hawley et al. (1960) |
| Rogers et al. (1991) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Moritz (n.d.) |
| Rocks & Min.:64:185 +1 other reference |
| Cook (1978) |
| Rocks & Min.:64:185 +1 other reference |
| Rocks & Min.:64:185. | |
| Rocks & Min.: 64:187. |
| Cook (1978) | |
| Cook (1978) |
| Cook (1978) |
| Cook (1978) |
| Cook (1978) |
| Rocks & Min.:64:198. |
| Cook (1978) |
| Cook (1978) |
| Cook (1978) |
| Cook (1978) |
| King et al. (1994) |
| King et al. (1994) |
| King et al. (1994) |
| King et al. (1994) | |
| King et al. (1994) |
| King et al. (1994) |
| King et al. (1994) |
| www.irocks.com (2020) |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) | |
| Heinrich et al. (2004) |
| Heinrich et al. (2004) | |
| Jenkins et al. (2002) |
| Jensen et al. (1995) |
| Castor et al. (2004) |
| Castor et al. (2004) |
| Russ Rizzo Collection | |
| Castor et al. (2004) |
| Tom Mortimer collection no. 1637 (mindatnh.org) |
| Anthony et al. (2016) |
| Walstrom (n.d.) |
| |
| Northrop et al. (1996) | |
| Northrop et al. (1996) | |
| Northrop et al. (1996) |
| 3rd Annual New Mexico Mineral Symposium (1983) | |
| Genth (1891) |
| Kenny Gay personal message |
| Genth (1891) |
| Genth (1891) | |
| Genth (1891) |
| Genth (1891) |
| Genth (1891) |
| Genth (1891) |
| Genth (1891) | |
| Genth (1891) |
| Genth (1891) | |
| Genth (1891) |
| Genth (1891) | |
| Genth (1891) | |
| Genth (1891) |
| Genth (1891) | |
| Genth (1891) | |
| Genth (1891) | |
| The Mineralogy of Pennslvania - 1922 +2 other references |
| |
| Carmchael et al. (2017) |
| Potter et al. (1979) |
| Potter et al. (1979) +1 other reference |
| Price (1983) |
| Matthew Lambert |
| Pabian Agate Lexicon +2 other references |
| Dietrich (1990) | |
| La Berge (1984) |
| Rocks & Min. Vol. 73 (1998) | |
| Cordua (1998) | |
| Heyl et al. (1959) |
| Rocks and Minerals (1987) |
| Falster (1987) | |
| Geoff Van Horn |
| Van Rythoven et al. (2020) |
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Haití mine, Cabezo de San Ginés, San Ginés de la Jara, Cartagena, Murcia, Spain