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Romanรจchite
A valid IMA mineral species - grandfathered
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About Romanรจchite
View of the Romanรจche-Thorins Mine, ca. 1905.
Manganese deposit, Romanรจche-Thorens, La Chapelle-de-Guinchay, Mรขcon, Saรดne-et-Loire, Bourgogne-Franche-Comtรฉ, France
Manganese deposit, Romanรจche-Thorens, La Chapelle-de-Guinchay, Mรขcon, Saรดne-et-Loire, Bourgogne-Franche-Comtรฉ, 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, Romanรจche, Saรดne-et-Loir, France.
Chemically similar to hollandite.
May be confused with members of the Cryptomelane Group.
Visit gemdat.org for gemological information about Romanรจchite.
May be confused with members of the Cryptomelane Group.
Visit gemdat.org for gemological information about Romanรจchite.Name Encoding
ASCII-7:
Romanechite
Unique Identifiers
Mindat ID:
3441
Long-form identifier:
mindat:1:1:3441:4
IMA Classification of Romanรจchite
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Romanรจchite
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 IMAโCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAโCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAโCNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Rmn | IMAโCNMNC | Warr, L.N. (2021). IMAโCNMNC 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, 185โ187 doi:10.2138/am.2010.3371 |
Physical Properties of Romanรจchite
Chemistry of Romanรจchite
Mindat Formula:
(Ba,H2O)2(Mn4+,Mn3+)5O10
Element Weights:
Elements listed:
Crystallography of Romanรจchite
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 ร
ยณ (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 ร | (70) |
| 2.875 ร | (70) |
| 2.415 ร | (70) |
| 2.190 ร | (100) |
| 1.820 ร | (70) |
| 1.560 ร | (70) |
| 1.399 ร | (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 Romanรจchite
Synonyms of Romanรจchite
Other Language Names for Romanรจchite
Dutch:Romanรจchiet
Russian:ะ ะพะผะฐะฝะตัะธั
Simplified Chinese:้ก็กฌ้ฐ็ฟ
Spanish:Hydrobraunita
Romanรจchita
Romanรจchita
Varieties of Romanรจchite
| 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
Associations Based on Photo Data:
| 53 photos of Romanรจchite associated with Todorokite | (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 ยท 3-4H2O |
| 49 photos of Romanรจchite associated with Birnessite | (Na,Ca)0.5(Mn4+,Mn3+)2O4 ยท 1.5H2O |
| 42 photos of Romanรจchite associated with Pyrolusite | Mn4+O2 |
| 31 photos of Romanรจchite associated with Baryte | BaSO4 |
| 26 photos of Romanรจchite associated with Rhodochrosite | MnCO3 |
| 18 photos of Romanรจchite associated with Goethite | Fe3+O(OH) |
| 18 photos of Romanรจchite associated with Calcite | CaCO3 |
| 14 photos of Romanรจchite associated with Quartz | SiO2 |
| 10 photos of Romanรจchite associated with 'Campylite' | Pb5(AsO4)3Cl |
| 8 photos of Romanรจchite associated with Palygorskite | โปAl2Mg2โป2Si8O20(OH)2(H2O)4 ยท 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. | Ferricoronadite | Pb(Mn4+6Fe3+2)O16 |
| 4.DK. | Kopernikite | K(Ti4+7Cr3+)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 ยท 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 ยท 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 Romanรจchite
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 Romanรจchite
Reference List:
Perseil, E. A.; Pinet, M. (1976) Contribution ร la connaissance des romanรจchites et des cryptomรฉlanes - coronadites - hollandites. Traits essentiels et paragenรจses. Contributions to Mineralogy and Petrology, 55 (2). 191-204 doi:10.1007/bf00372226
Localities for Romanรจchite
Showing 409 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
โ - 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. (1982) |
| GEMCO (Groote Eylandt Mining Company Operation) |
| |
| 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 Aufschluร (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 fรผr Mineralogie - Monatshefte et al. (10) |
| Svetla Atanassova (2007) |
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 |
| Hytรถnen (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 | |
| Weiร (1990) |
| Brill et al. (2017) |
| Walenta (1991) +1 other reference |
| Walenta (1992) |
| Grรถbner (2003) |
| |
| Falkenstein (2010) |
| Wittern (2001) |
| Wittern (2001) | |
| Walenta (1992) | |
| Weiร (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) |
| Weiร (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) |
| Weiร (1990) |
| Lapis 1979 (10) |
| 58. +1 other reference |
| Blaร et al. (1993) |
| Schaarschmidt (2003) |
| 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) | |
| Hans-Jรผrgen Haas collection |
| Jahn (1999) |
| XRD and SEM-EDX analysis (T. Witzke) |
| Wittern (2001) |
| Wittern (2001) |
| Wittern (2001) |
| Grรถbner et al. (2008) |
| Wittern (2001) | |
| Grรถbner et al. (2008) |
| Wittern (2001) |
Ghana | |
| Mรผcke et al. (1999) |
Greece | |
| |
| Rieck et al. (1999) +1 other reference | |
| Rieck (n.d.) |
| Stouraiti et al. (2022) |
| Bracke (n.d.) |
| |
Hungary | |
| Bujtor et al. (2024) |
| Szakรกll: Minerals of Rudabรกnya |
| Szakรกll: Minerals of Rudabรกnya | |
| Szakรกll: Minerals of Rudabรกnya | |
| Sรกndor et al. (2005) |
| Szakรกll et al. (1996) |
| Szakรกll & Jรกnosi: Minerals of Hungary |
| Sรกndor et al. (2005) |
| Sรกndor et al. (2005) |
| www.mineralienfreunde.de (2003) |
| Koch (1985) |
| Sรกndor et al. (2005) | |
India | |
| Yadav (2022) |
| Pradhan et al. (2019) |
| 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) |
| Bedognรฉ 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) |
| Rizzo et al. (2019, July 5th) |
| 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 (รฉditeur) |
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 |
| King (1981) | |
| Panczner (1987) | |
| Panczner (1987) |
| Panczner (1987) | |
| Panczner (1987) | |
| Panczner (1987) |
| Panczner (1987) | |
| Panczner (1987) | |
| Panczner (1987) |
| Ref.: Revista Mexicana de Ciencias Geolรณgicas 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 | |
| Szakรกll (2002) |
| Krajewski R. | |
| Paulo A. 1970: Mineraลy niklu i bizmutu w ลผyลach kruszcowych okolicy Cheลmca (Gรณry Kaczawskie, Dolny ลlฤ sk) |
| 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 Orzeล Biaลy mine (Upper Silesia) |
Portugal | |
| Azevedo (2024) |
| Alves (n.d.) |
| Sitio do Cobre mine |
Romania | |
| Onac et al. (2002) |
| minerals-of-the-carpathians.eu (2008) |
| Hรฎrtopanu (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) |
| Konyshev et al. (2026) |
| Kasatkin et al. (2021) |
Slovakia | |
| Pauliลก |
| Pauliลก | |
| ฤuฤa R. et al. (1993) | |
| Grecula (1995) |
| Kodฤra et al. (1986) |
| Pauliลก et al. (2002) |
| Pauliลก et al. (2002) |
| Kodฤra et al. (1986) | |
| Kodฤra et al. (1986) |
| Kodฤra et al. (1986) | |
| Kodฤra et al. (1986) | |
| Kodฤra et al. (1986) | |
| Kodฤra et al. (1986) | |
| Pauliลก et al. (2002) | |
| ล tevko M. et al. (2017) |
| Kodฤra et al. (1986) |
| Kodฤra et al. (1986) |
| Duda et. all. |
| ฤuฤa R. (2001) | |
| Rojkoviฤ I. et al. (2003) |
| ฤuฤa |
| Rojkoviฤ et al. (2003) |
| Rojkoviฤ et al. (2003) |
| Miลกรญk |
| Rojkoviฤ et al. (2003) |
| Rojkoviฤ et al. (2003) |
| Rojkoviฤ et al. (2003) | |
| Miลกรญk |
| Rojkoviฤ 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 Rebollar (2018) |
| Calvo Rebollar (2009) |
| Onac et al. (2014) |
| Carles Curto Milร 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 | |
| รztรผrk 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) |
| Nicholson (1986) |
| 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) |
| Newmont Mining Corporation |
| Castor et al. (2004) |
| Newmont Mining Corporation |
| 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 |
| [var: Skemmatite] |
| 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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Haitรญ mine, Cabezo de San Ginรฉs, San Ginรฉs de la Jara, Cartagena, Murcia, Spain