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Redledgeite

A valid IMA mineral species
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06040220017271926104292.jpg
Redledgeite, etc.

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA
07574510017271926153617.jpg
Redledgeite

Saranovskii Mine, Sarany, Gornozavodskii District, Perm Krai, Russia
05664310017271926186937.jpg
Redledgeite

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA
06040220017271926104292.jpg
Redledgeite, etc.

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA
07574510017271926153617.jpg
Redledgeite

Saranovskii Mine, Sarany, Gornozavodskii District, Perm Krai, Russia
05664310017271926186937.jpg
Redledgeite

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA
09577640017271926214687.jpg
Redledgeite, etc.

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA
07574510017271926153617.jpg
Redledgeite

Saranovskii Mine, Sarany, Gornozavodskii District, Perm Krai, Russia
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About RedledgeiteHide

00870320017271926244355.jpg
East side, Butterfly Adit

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA
Formula:
Ba(Ti4+6Cr3+2)O16
Formerly defined as Bax([Cr,Fe,V]3+2xTi8-2x)O16.
Colour:
Green, yellow, black
Lustre:
Adamantine
Hardness:
6 - 7
Specific Gravity:
3.72
Crystal System:
Tetragonal
Name:
Named after its discovery locality.
Ba analogue of UM1994-09-O:CrKTi. Cr analogue of mannardite.


Unique IdentifiersHide

Mindat ID:
3380
Long-form identifier:
mindat:1:1:3380:6

IMA Classification of RedledgeiteHide

Classification of RedledgeiteHide

Strunz-mindat (2026):
4.DK.05b

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
Dana 8th ed.:
7.9.5.2

7 : MULTIPLE OXIDES
9 : AB8X16
Hey's CIM Ref.:
7.14.8

7 : Oxides and Hydroxides
14 : Oxides of Cr

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
RedIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of RedledgeiteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of RedledgeiteHide

Lustre:
Adamantine
Transparency:
Opaque
Colour:
Green, yellow, black
Streak:
White, grey
Hardness:
6 - 7 on Mohs scale
Density:
3.72 g/cm3 (Measured)    4.413 g/cm3 (Calculated)

Chemistry of RedledgeiteHide

Mindat Formula:
Ba(Ti4+6Cr3+2)O16

Formerly defined as Bax([Cr,Fe,V]3+2xTi8-2x)O16.
Element Weights:
Element% weight
Ti36.609 %
O32.631 %
Ba17.505 %
Cr13.256 %

Calculated from ideal end-member formula.
Elements listed:
Ba, Cr, O, Ti - search for minerals with similar chemistry

Crystallography of RedledgeiteHide

Crystal System:
Tetragonal
Cell Parameters:
a = 20.33 Å, c = 5.88 Å
Ratio:
a:c = 1 : 0.289
Unit Cell V:
2,430.26 ų (Calculated from Unit Cell)
Comment:
Tetragonal, or monoclinic, pseudotetragonal. Point Group: 4/m or 2/m.; : Space Group: I41/m, : I2/m, ; Space Group: I41/m, with a = 14.320(2) c = 5.893(1) Z = 4, or Space Group: I2/m, with a = 10.129(2) b = 2.951(1) c = 10.135(1) β = 90.05◦ Z=1

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005537RedledgeiteFoley J A, Hughes J M, Drexler J W (1997) Redledgeite, Bax([Cr,Fe,V]2xTi8-2x)O16, the I4/m structure and elucidation of the sequence of tunnel Ba cations The Canadian Mineralogist 35 1531-153419970293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.195 Å(100)
2.470 Å(60)
1.583 Å(60)
3.570 Å(50)
1.885 Å(50)
1.393 Å(50)
2.217 Å(40)
Comments:
close to mannardite.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust>4.50
7 : Ultramafic igneous rocks

Type Occurrence of RedledgeiteHide

Type Locality:
ⓘ Red Ledge Mine, Washington, Washington Mining District (Omega Mining District), Nevada County, California, USA
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 95846; The Natural History Museum, London, England, 1928,336.
Associated Minerals at Type Locality:
ChromiteKnorringite
Reference:
Strunz, H. (1961) “Chromrutil” von der Red Ledge mine ist kein Rutil. Neues Jahrbuch für Mineralogie, Monatshefte: 1961: 107-111. [Redledgeite]

Synonyms of RedledgeiteHide

Other Language Names for RedledgeiteHide

Relationship of Redledgeite to other SpeciesHide

Member of:
Priderite Group > Hollandite Supergroup
Other Members of Priderite Group:
HenrymeyeriteBa(Ti4+7Fe2+)O16Tet. 4/m : I4/m
KopernikiteK(Ti7Cr3+)O16Tet. 4/m : I4/m
MannarditeBa(Ti4+6V3+2)O16Tet. 4/m : I41/a
PrideriteK(Ti4+7Fe3+)O16Tet. 4/m : I4/m
'UM1994-09-O:CrKTi'Compare UM1994-07-O:BaCrFeMgTi and UM1994-08-O:CaFeKMgTi.

Common AssociatesHide

Associations Based on Photo Data:
7 photos of Redledgeite associated with 'Chromium-bearing Clinochlore'Mg5(Al,Cr)2Si3O10(OH)8
4 photos of Redledgeite associated with ChromiteFe2+Cr3+2O4
2 photos of Redledgeite associated with 'Aluminian Chromite'Fe(Cr,Al)2O4
2 photos of Redledgeite associated with ClinochloreMg5Al(AlSi3O10)(OH)8
2 photos of Redledgeite associated with UvaroviteCa3Cr3+2(SiO4)3
1 photo of Redledgeite associated with Shuiskite-(Mg)Ca2MgCr3+2[Si2O6OH][SiO4](OH)2(OH)
1 photo of Redledgeite associated with 'Chromitite'

Related Minerals - Strunz-mindat GroupingHide

4.DK.KThalliomelaneTl(Mn4+7.5Cu2+0.5)O16Tet. 4/m : I4/m
4.DK.FerrihollanditeBa(Mn4+6Fe3+2)O16Mon. 2/m
4.DK.KopernikiteK(Ti7Cr3+)O16Tet. 4/m : I4/m
4.DK.4.DK.FerricoronaditePb(Mn4+6Fe3+2)O16Tet. 4/m : I4/m
4.DK.05aManjiroiteNa(Mn4+7Mn3+)O16Tet. 4/m : I4/m
4.DK.05bMannarditeBa(Ti4+6V3+2)O16Tet. 4/m : I41/a
4.DK.05Akaganeite(Fe3+,Ni2+)8(OH,O)16Cl1.25 · nH2OMon. 2/m
4.DK.05aCoronaditePb(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aHollanditeBa(Mn4+6Mn3+2)O16Mon. 2/m
4.DK.05aCryptomelaneK(Mn4+7Mn3+)O16Mon. 2/m
4.DK.05aStrontiomelaneSr(Mn4+6Mn3+2)O16Mon. 2/m : P21/b
4.DK.05bHenrymeyeriteBa(Ti4+7Fe2+)O16Tet. 4/m : I4/m
4.DK.05bPrideriteK(Ti4+7Fe3+)O16Tet. 4/m : I4/m
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

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.

Internet Links for RedledgeiteHide

References for RedledgeiteHide

Reference List:
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. Neues Jahrbuch für Mineralogie, Monatshefte: 1961: 107-111. [Redledgeite]
Fleischer, M. (1961) New Mineral Names. American Mineralogist, 46 (9-10 ). 1200-1204
Strunz, Hugo (1963) Redledgeit, eine TiO2-Einlagerungsstruktur analog Kryptomelan. Neues Jahrbuch für Mineralogie, Monatshefte, 1963 (5), 116-119.
IMA (1967) International Mineralogical Association: Commission on New Minerals and Mineral Names. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (277) 131-136 doi:10.1180/minmag.1967.036.277.20
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 (1) 55-66
Hawthorne, Frank C., Burke, Ernst A. J., Ercit, T. Scott, Grew, Edward S., Grice, Joel D., Jambor, John L., Puziewicz, Jacek, Roberts, Andrew C., Vanko, David A. (1988) New Mineral Names. American Mineralogist, 73 (1-2) 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. and Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 193-198.
(2005) Redledgeite. Handbook of Mineralogy. Mineralogical Society of America

Localities for RedledgeiteHide

Showing 8 localities.

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.
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Locality ListHide

- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
India
 
  • Jharkhand
    • Dhanbad District
      • Jharia Coalfield
Kaur et al. (2024)
Italy
 
  • Lombardy
    • Sondrio Province
      • Lanzada
        • Mt. Motta
Bedognè (2011)
Bedogné et al. (1994)
Russia
 
  • Chelyabinsk Oblast
    • Kartalinsky District
Alekseev et al. (2003) +1 other reference
  • Perm Krai
    • Gornozavodskii District
Pavel M. Kartashov (n.d.)
      • Sarany
EDS probe +1 other reference
  • Sakha
    • Mirninsky District
      • Daldyn
Rezvukhin +3 other references
USA (TL)
 
  • California
    • Nevada County
      • Washington Mining District (Omega Mining District)
        • Washington
Gordon et al. (1928) +6 other references
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