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About HydroxycalcioroméiteHide

Amber yellow, golden yellow, yellow brown
Sub-Vitreous, Resinous, Earthy
Specific Gravity:
Crystal System:
Renamed as Ti-bearing roméite in 2007 in anticipation of systematic names replacing trivial names. The nomenclature of the pyrochlore supergroup was revised by Atencio et al. (2010) and the lewisite (type specimen) was reclassified.
The type sample for "lewisite" (Hussak & Prior 1895) is now to be classified as hydroxycalcioroméite.
Found as yellow to brown octahedral crystals to 1 mm and as earthy masses.

Classification of HydroxycalcioroméiteHide

Redefined by the IMA, Renamed by the IMA
Approval Year:
First Published:
Approval History:
Pre-IMA, grandfathered (as lewisite).
2007: Discredited as Ti-bearing roméite (Burke 2007).
2010: Redefined and renamed by IMA as hydroxycalcioroméite (IMA special procedure 2010)

Physical Properties of HydroxycalcioroméiteHide

Sub-Vitreous, Resinous, Earthy
Transparent, Translucent
Amber yellow, golden yellow, yellow brown
Pale yelow brown
5½ on Mohs scale
Hardness Data:
4.95 g/cm3 (Measured)    5.31 g/cm3 (Calculated)

Optical Data of HydroxycalcioroméiteHide


Chemical Properties of HydroxycalcioroméiteHide


Crystallography of HydroxycalcioroméiteHide

Crystal System:
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Cell Parameters:
a = 10.264 Å
Unit Cell V:
1,081.31 ų (Calculated from Unit Cell)
ICDD 7-66

X-Ray Powder DiffractionHide

Powder Diffraction Data:
2.94 Å(100)
1.813 Å(100)
1.548 Å(100)
1.179 Å(50)
1.150 Å(50)
1.050 Å(50)
0.989 Å(50)
ICDD 7-66

Geological EnvironmentHide

Geological Setting:
Sulfosalt veins

Type Occurrence of HydroxycalcioroméiteHide

Synonyms of HydroxycalcioroméiteHide

Other Language Names for HydroxycalcioroméiteHide

Relationship of Hydroxycalcioroméite to other SpeciesHide

Other Members of this group:
Fluorcalcioroméite(Ca,Na,◻)2Sb5+2(O,OH)6FIso. m3m (4/m 3 2/m) : Fd3m
Hydroxyferroroméite(Fe2+1.5□0.5)Sb5+2O6(OH)Iso. m3m (4/m 3 2/m) : Fd3m
OxycalcioroméiteCa2Sb2O6OIso. m3m (4/m 3 2/m) : Fd3m
OxyplumboroméitePb2Sb2O6OIso. m3m (4/m 3 2/m) : Fd3m

Common AssociatesHide

Tetrahedrite SubgroupCu6(Cu4X2+2)Sb4S12S
Associated Minerals Based on Photo Data:
4 photos of Hydroxycalcioroméite associated with HemimorphiteZn4Si2O7(OH)2 · H2O
4 photos of Hydroxycalcioroméite associated with CuproroméiteCu2Sb2(O,OH)7
2 photos of Hydroxycalcioroméite associated with BindheimitePb2Sb2O6O
2 photos of Hydroxycalcioroméite associated with TripuhyiteFe3+Sb5+O4

Fluorescence of HydroxycalcioroméiteHide

Not fluorescent in UV

Other InformationHide

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 HydroxycalcioroméiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hussak and Prior (1895) Mineralogical Magazine: 11: 80.
Zeitschrift für Kristallographie (1932) 82: 72.
Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1020-1022.
Rouse, R.C., Dunn, P.J., Peacor, D.R., and Wang, L. (1998) Structural studies of the natural antimonian pyrochlores. I. Mixed valency, cation site splitting, and symmetry reduction in lewisite. Journal of Solid State Chemistry 141: 562-569.
American Mineralogist (1998) 83: 403.
American Mineralogist (1999) 84: 1198.
Mineralogical Magazine (2003) 67: 31.
Burke, E.A.J. (2006) A mass discreditation of GQN Minerals. The Canadian Mineralogist: 44(6): 1557-1560.
Atencio, D., Andrade, M.B., Christy, A.G., Gieré, R., and Kartashov, P.M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist: 48: 673-698.
Christy, A.G. and Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup. Mineralogical Magazine: 77: 13-20.

Internet Links for HydroxycalcioroméiteHide

Localities for HydroxycalcioroméiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Victoria
    • Loddon Shire
      • Inglewood
Birch, W. D. (2015) Native antimony from Inglewood, Victoria. Australian Journal of Mineralogy Vol. 17 #2, 88-90.
  • Lower Austria
    • Horn District
      • Geras
        • Kottaun
Kolitsch, U. (2014): 1883) Bismutit, Fluorapatit, Fluorit, Galenit, Hydroxycalcioroméit(?), Kettnerit, Oxyplumboroméit, Pyromorphit, Tetraedrit, gediegen Wismut(?) und Wittichenit aus dem neuen, kleinen Steinbruch („Andradit-Bruch“) nördlich Kottaun, Geras, Waldviertel, Niederösterreich Pp. 117-119 in Niedermayr, G. et al. (2014): Neue Mineralfunde aus Österreich LXIII. Carinthia II, 204./124., 65-146.
  • Tyrol
    • Innsbruck-Land District
      • Obernberg am Brenner
Kolitsch, U., Schachinger, T. & Auer, C. (2018): 2076) Aegirin, Aegirin-Augit, Albit, Baddeleyit, Baryt, Brandtit(?), Braunit, Calcit, Canosioit, Clinosuenoit (ehemals „Manganocummingtonit“), Coelestin, Diaspor, Dolomit, Fluorapatit (As-haltig), Fluorcalcioroméit, Gamagarit, Hämatit, Hausmannit, Hjalmarit, Hollandit, Hydroxycalcioroméit, Klinochlor, Kutnohorit, Mischkristalle Manganiandrosit-(La) - Manganiakasakait-(La), Nambulit, Phlogopit, Piemontit, Pyrobelonit, Sb-haltiger Pyrophanit, Quarz, Ranciéit(?), Rhodochrosit, Rhodonit, Richterit, Rutil, Spessartin, Talk, Thorit, Tremolit, Tilasit, Titanit, Tokyoit, Wakefieldit-(Ce), Wakefieldit-(Y), Zirkon, das Sb-Analogon von Hydroxymanganopyrochlor und unbenanntes LaAsO4 vom Obernberger Tribulaun, Nordtirol - ein erster Bericht über mineralogisch komplexe, linsenförmige metamorphe Manganvererzungen. Pp. 206-213 in Walter, F. et al. (2018): Neue Mineralfunde aus Österreich LXVII. Carinthia II, 208./128., 185-254.
Brazil (TL)
  • Minas Gerais
    • Ouro Preto
      • Ouro Preto district
Hussak and Prior (1900) Mineralogical Magazine: 12: 244.; Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1022.; Brugger, J., Gieré, R., Graeser, S., and Meisser, N. (1997) The crystal chemistry of roméite. Contributions to Mineralogy & Petrology: 127: 136–146.; Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.; Rouse, R.C., Dunn, P.J., Peacor, D.R., and Wang, L. (1998) Structural studies of the natural antimonian pyrochlores. I. Mixed valency, cation site splitting, and symmetry reduction in lewisite. Journal of Solid State Chemistry 141: 562-569.; Jambor, J.E., Pertsev, N.N., and Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 1195-1198.;
  • Ontario
    • Thunder Bay District
      • Bomby Township
Harris (1989)
  • Guangxi
    • Hechi
      • Jinchengjiang District
        • Beixiang - Furongchang ore field
Liangming Fan, Rubo Zhang, and Xingzhen Wang (1983): Geological Review 48(6), 575-577
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Km 3
            • Km 3 mines
Rieck, B., Kolitsch, U., Voudouris, P., Giester, G. and Tzeferis, P. (2018): Weitere Neufunde aus Lavrion, Griechenland. Mineralien-Welt 29 (5), 32-77 (in German).
New Zealand
  • Otago Region
    • Dunedin City
      • Hindon
Museum Victoria Registration Number: M 48638
North Macedonia
  • Veles Municipality
    • Nežilovo
Chukanov, N.V., Krzhizhanovskaya, M.G., Jančev, S., Pekov, I.V., Varlamov, D.A., Göttlicher, J., Rusakov, V.S., Polekhovsky, Y.S., Chervonnyi, A.D., Ermolaeva, V.N. (2018): Zincovelesite-6N6S, Zn3(Fe3+,Mn3+,Al,Ti)8O15(OH), a new högbomite-supergroup mineral from Jacupica mountains, Republic of Macedonia. Mineralogy and Petrology, 112, 733–742.
  • Värmland County
    • Filipstad
Pavel M. Kartashov analytical data (2010) Ulf Nyberg specimens
  • Arizona
    • Cochise County
      • Johnny Lyon Hills
        • Tres Alamos Wash
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 136, 276, 323.
  • New Jersey
    • Sussex County
      • Franklin Mining District
        • Franklin
Steven Kuitems
  • Utah
    • Tooele Co.
      • Sheeprock Mountains
        • Little Valley
Norman King(photo-id 634925)
    • Utah Co.
      • Oquirrh Mountains
        • Fairfield
          • Clay Canyon
Rocks & Minerals (1970): 45(11): 667-674.; Wendell Wilson (2010) The Clay Canyon Variscite Mine, Fairfield Utah. Mineralogical Record 41:321-349
  • Hà Giang Province
Shunso Ishihara and Pham Tich Xuan (2013)Distribution of some ore metals around the Mau Due stibnite deposits, northernmost Vietnam. Bulletin of the Geological Survey of Japan 64:51-57.
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