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About RedledgeiteHide

Formerly defined as Bax([Cr,Fe,V]3+2xTi8-2x)O16.
Green, yellow, black
6 - 7
Crystal System:
Named after its discovery locality.

Classification of RedledgeiteHide


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

9 : AB8X16

7 : Oxides and Hydroxides
14 : Oxides of Cr

Pronounciation of RedledgeiteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of RedledgeiteHide

Green, yellow, black
White, grey
6 - 7 on Mohs scale

Chemical Properties of RedledgeiteHide


Formerly defined as Bax([Cr,Fe,V]3+2xTi8-2x)O16.
IMA Formula:

Crystallography of RedledgeiteHide

Crystal System:
Cell Parameters:
a = 20.33 Å, c = 5.88 Å
a:c = 1 : 0.289
Unit Cell V:
2,430.26 ų (Calculated from Unit Cell)

Type Occurrence of RedledgeiteHide

Synonyms of RedledgeiteHide

Other Language Names for RedledgeiteHide

Relationship of Redledgeite to other SpeciesHide

Other Members of this group:
HenrymeyeriteBa(Ti4+7Fe2+)O16Tet. 4/m : I4/m
MannarditeBa(Ti4+6V3+2)O16Tet. 4/m : I41/a

Common AssociatesHide

Associated Minerals Based on Photo Data:
Chromian Clinochlore4 photos of Redledgeite associated with Chromian Clinochlore on mindat.org.
Chromite3 photos of Redledgeite associated with Chromite on mindat.org.
Aluminian Chromite2 photos of Redledgeite associated with Aluminian Chromite on mindat.org.
Clinochlore1 photo of Redledgeite associated with Clinochlore on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.DK.FerrihollanditeBa(Mn4+6Fe3+2)O16Mon. 2/m
4.DK.05Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2OMon. 2/m
4.DK.05aCoronaditePb(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aCryptomelaneK(Mn4+7Mn3+)O16Mon. 2/m
4.DK.05aHollanditeBa(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aManjiroiteNa(Mn4+7Mn3+)O16Tet. 4/m : I4/m
4.DK.05bMannarditeBa(Ti4+6V3+2)O16Tet. 4/m : I41/a
4.DK.05bHenrymeyeriteBa(Ti4+7Fe2+)O16Tet. 4/m : I4/m
4.DK.05aStrontiomelaneSr(Mn4+6Mn3+2)O16Mon. 2/m : P21/b
4.DK.10Romanèchite(Ba,H2O)2(Mn4+,Mn3+)5O10Mon. 2/m
4.DK.10Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2OMon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide 4/m : I41/a

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.14.2BracewelliteCrO(OH)Orth. mmm (2/m 2/m 2/m)
7.14.6Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38Trig.
7.14.9HawthorneiteBaMgTi3Cr4Fe2+2Fe3+2O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
7.14.11Wattersite(Hg+2)2Hg2+(CrO4)O2Mon. 2/m : B2/b
7.14.12ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.14.13MagnesiochromiteMgCr2O4Iso. m3m (4/m 3 2/m) : Fd3m

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 RedledgeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gordon, S.G., Shannon, E.V. (1928) Chromrutile a new mineral from California. American Mineralogist: 13: 69.
Strunz, H. (1961) “Chromrutil” von der Red Ledge mine ist kein rutil. Redledgeite. Neues Jahrbuch für Mineralogie, Monatshefte: 107-111.
Fleischer, M. (1961) New mineral names. American Mineralogist: 46: 1200-1204.
Strunz, H. (1963) Redledgeite, eine TiO2-einlagerungestruktur analog kryptomelan: Neues. Jahrb. Mineral. Monatsh. 5: 116-119.
International Mineralogical Association (1967) Commission on new minerals and mineral names. Mineralogical Magazine: 36: 131-136.
Gatehouse, B.M., Jones, G.C., Pring, A., Symes, R.F. (1986) The chemistry and structure of redledgeite. Mineralogical Magazine: 50: 709-715.
Scott, J.D., Peatfield, G.R. (1986) Mannardite [Ba·H2O](Ti6V3+2)O16, a new mineral species, and new data on redledgeite. The Canadian Mineralogist: 24: 55-66.
Hawthorne, F.C., Burke, E.A.J., Ercit, T.S., Grew, E.S., Grice, J.D., Jambor, J.L,, Puziewicz, J., Roberts, A.C., Vanko, D.A. (1988) New mineral names. American Mineralogist: 73: 189-199.
Foley, J.A., Hughes, J.M., Drexler, J.W. (1997) Redledgeite, Bax([Cr,Fe,V]3+2xTi8-2x)O16, the I4/m structure and elucidation of the sequence of tunnel Ba cations. The Canadian Mineralogist: 35: 1531-1534.
Jambor, J.L., Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 193-198.

Internet Links for RedledgeiteHide

Localities for RedledgeiteHide

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.
  • Lombardy
    • Sondrio Province
      • Valtellina
Lapis, 19 (10), 15-21+86.
          • Lanterna Valley
            • Lanzada
              • Mt. Motta
Bedognè, F. (2011). Microminerali della Valmalenco. Nuove segnalazioni e aggiornamenti. Rivista Mineralogica Italiana, 1/2011, 40-45
  • Permskaya Oblast
    • Gornozavodskii area
P.M. Kartashov data
      • Saranovskaya Village (Sarany)
EDS probe
  • California
    • Nevada Co.
      • Washington District (Omega District)
        • Washington
Gordon, Samuel G. & E.V. Shannon (1928), Chromrutile a new mineral from California: American Mineralogist: 13: 69; Bradley, W.W. (1940), Thirty-sixth report of the State Mineralogist: California Division Mines Report 36: 69; 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, John Wiley & Sons, New York: 560; Strunz, Hugo (1961), “Chromrutil” von der Red Ledge mine ist kein rutil. Redledgeite: Neues Jahrb. Mineral., Monatsh.: 107; Strunz, Hugo (1963), Redledgeite, eine TiO2-einlagerungestruktur analog kryptomelan: Neues. Jahrb. Min. mh. 5: 116; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 174.
Mineral and/or Locality  
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