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Redledgeite

A valid IMA mineral species

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Photos of Redledgeite (14)

Redledgeite Gallery Search Photos of Redledgeite

Edit Add Synonym Edit CIF structures Clear Cache

Redledgeite, etc.

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA

Redledgeite

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA

Redledgeite

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

Redledgeite, etc.

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA

Redledgeite

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA

Redledgeite

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

Redledgeite, etc.

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA

Redledgeite

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA

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About RedledgeiteHide

East side, Butterfly Adit

Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA

Formula:

Ba(Ti⁴⁺₆Cr³⁺₂)O₁₆

Formerly defined as Ba_x([Cr,Fe,V]³⁺_2xTi_8-2x)O₁₆.

Colour:

Green, yellow, black

Lustre:

Adamantine

Hardness:

6 - 7

Specific Gravity:

3.72

Crystal System:

Tetragonal

Member of:

Priderite Group > Hollandite Supergroup

Name:

Named after its discovery locality.

Type Locality:

ⓘ Red Ledge Mine, Washington, Washington Mining District (Omega Mining District), Nevada County, California, USA

Ba analogue of UM1994-09-O:CrKTi. Cr analogue of mannardite.

Unique IdentifiersHide

Mindat ID:

3380

Long-form identifier:

mindat:1:1:3380:6

GUID
(UUID V4):

c56ee21a-0458-49c2-b212-45aa7c4d85bb

IMA Classification of RedledgeiteHide

IMA status:

Approved

IMA Formula:

Ba(Ti₆Cr³⁺₂)O₁₆

Type description reference:

Strunz, H. (1961) “Chromrutil” von der Red Ledge mine ist kein rutil. Redledgeite. Neues Jahrbuch für Mineralogie, Monatshefte: 107-111.

Classification of RedledgeiteHide

Strunz-mindat (2024):

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.

Symbol	Source	Reference
Red	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of RedledgeiteHide

Pronunciation:

Play	Recorded by	Country
	Jolyon Ralph	United 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 Ba_x([Cr,Fe,V]³⁺_2xTi_8-2x)O₁₆.

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 Å³ (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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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0005537	Redledgeite	Foley 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 1531-1534		1997		0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Redledgeite'
loop_
_publ_author_name
'Foley J A'
'Hughes J M'
'Drexler J W'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 35 
_journal_year 1997
_journal_page_first 1531
_journal_page_last 1534
_publ_section_title
;
 Redledgeite, Bax([Cr,Fe,V]2xTi8-2x)O16, the I4/m structure and elucidation
 of the sequence of tunnel Ba cations
;
_database_code_amcsd 0005537
_chemical_formula_sum 'Ba.561 Ti4 O8'
_cell_length_a 10.1500
_cell_length_b 10.1500
_cell_length_c 2.9520
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 304.122
_exptl_crystal_density_diffrn      4.330
_symmetry_space_group_name_H-M 'I 4/m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,1/2+z'
  'x,y,-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,1/2+z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
Ba1   0.00000   0.00000   0.00000   0.52500   0.02710
Ba2   0.00000   0.00000   0.19500   0.01800   0.00633
Ti   0.15023   0.66609   0.00000   1.00000   0.00785
O1   0.04010   0.33340   0.00000   1.00000   0.00937
O2   0.29600   0.34460   0.00000   1.00000   0.00849

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
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 Mode	Earliest 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:

Chromite

Knorringite

Reference:

Strunz, H. (1961) “Chromrutil” von der Red Ledge mine ist kein rutil. Redledgeite. Neues Jahrbuch für Mineralogie, Monatshefte: 107-111.

Synonyms of RedledgeiteHide

Chromrutile

Other Language Names for RedledgeiteHide

German:Chromrutil
Redledgeit

Russian:Редледжеит

Spanish:Redledgeita

Relationship of Redledgeite to other SpeciesHide

Member of:

Priderite Group > Hollandite Supergroup

Other Members of this group:

Henrymeyerite	Ba(Ti⁴⁺₇Fe²⁺)O₁₆	Tet. 4/m : I4/m
Mannardite	Ba(Ti⁴⁺₆V³⁺₂)O₁₆	Tet. 4/m : I4₁/a
Priderite	K(Ti⁴⁺₇Fe³⁺)O₁₆	Tet. 4/m : I4/m
UM1994-09-O:CrKTi	K₂Cr₂Ti₆O₁₆

Common AssociatesHide

Associated Minerals Based on Photo Data:

6 photos of Redledgeite associated with Chromium-bearing Clinochlore	Mg₅(Al,Cr)₂Si₃O₁₀(OH)₈
3 photos of Redledgeite associated with Chromite	Fe²⁺Cr³⁺₂O₄
2 photos of Redledgeite associated with Clinochlore	Mg₅Al(AlSi₃O₁₀)(OH)₈
2 photos of Redledgeite associated with Aluminian Chromite	Fe(Cr,Al)₂O₄
2 photos of Redledgeite associated with Uvarovite	Ca₃Cr₂(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 Grouping Hide

4.DK.	Ferrihollandite	Ba(Mn⁴⁺₆Fe³⁺₂)O₁₆	Mon. 2/m
4.DK.K	Thalliomelane	Tl(Mn⁴⁺_7.5Cu²⁺_0.5)O₁₆	Tet. 4/m : I4/m
4.DK.4.DK.	Ferricoronadite	Pb(Mn⁴⁺₆Fe³⁺₂)O₁₆	Tet. 4/m : I4/m
4.DK.05	Akaganeite	(Fe³⁺,Ni²⁺)₈(OH,O)₁₆Cl_1.25 · nH₂O	Mon. 2/m
4.DK.05a	Coronadite	Pb(Mn⁴⁺₆Mn³⁺₂)O₁₆	Mon. 2/m
4.DK.05a	Cryptomelane	K(Mn⁴⁺₇Mn³⁺)O₁₆	Mon. 2/m
4.DK.05a	Hollandite	Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆	Mon. 2/m
4.DK.05a	Manjiroite	Na(Mn⁴⁺₇Mn³⁺)O₁₆	Tet. 4/m : I4/m
4.DK.05b	Mannardite	Ba(Ti⁴⁺₆V³⁺₂)O₁₆	Tet. 4/m : I4₁/a
4.DK.05b	Priderite	K(Ti⁴⁺₇Fe³⁺)O₁₆	Tet. 4/m : I4/m
4.DK.05b	Henrymeyerite	Ba(Ti⁴⁺₇Fe²⁺)O₁₆	Tet. 4/m : I4/m
4.DK.05a	Strontiomelane	Sr(Mn⁴⁺₆Mn³⁺₂)O₁₆	Mon. 2/m : P2₁/b
4.DK.10	Romanèchite	(Ba,H₂O)₂(Mn⁴⁺,Mn³⁺)₅O₁₀	Mon. 2/m
4.DK.10	Todorokite	(Na,Ca,K,Ba,Sr)_1-x(Mn,Mg,Al)₆O₁₂ · 3-4H₂O	Mon. 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

mindat.org URL:

https://www.mindat.org/min-3380.html
Please feel free to link to this page.

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External Links:

Look for Redledgeite on Webmineral

Look for Redledgeite on Wikipedia

Look for Redledgeite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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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. Redledgeite. Neues Jahrbuch für Mineralogie, Monatshefte: 107-111.

Fleischer, M. (1961) New mineral names. American Mineralogist: 46: 1200-1204.

Strunz, H. (1961) “Chromrutil” von der Red Ledge mine ist kein rutil. Redledgeite. Neues Jahrbuch für Mineralogie, Monatshefte: 107-111.

Strunz, H. (1963) Redledgeite, eine TiO2-einlagerungestruktur analog kryptomelan: Neues. Jahrb. Mineral. Monatsh. 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., Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 193-198.

(2023) Redledgeite. Handbook of Mineralogy. Mineralogical Society of America

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 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.


Italy
Lombardy Sondrio Province Lanzada Mt. Motta ⓘ IMI Fabi Mine (Fabi Mine; Fabi Quarry)	Bedognè (2011)
ⓘ Malenco Valley	Lapis (10)

Russia
Chelyabinsk Oblast Kartalinsky District ⓘ Verblyuzhegorskoye Cr deposit	Alekseev et al. (2003) +1 other reference
Perm Krai Gornozavodskii District ⓘ Malopester'skoe Cr deposit	Pavel.M. Kartashov (n.d.)
Sarany ⓘ Saranovskii Mine	EDS probe +1 other reference
Sakha Mirninsky District Daldyn ⓘ Udachnaya open-pit mine (Udachnaya-Vostochnaya pipe; Udachnaya pipe)	Rezvukhin +3 other references

USA (TL)
California Nevada County Washington Mining District (Omega Mining District) Washington ⓘ Red Ledge Mine (TL)	Van Nostrand Reinholt Press: 174. +6 other references

Redledgeite

About RedledgeiteHide

Unique IdentifiersHide

IMA Classification of RedledgeiteHide

Classification of RedledgeiteHide

Mineral SymbolsHide

Pronunciation of RedledgeiteHide

Physical Properties of RedledgeiteHide

Chemistry of RedledgeiteHide

Crystallography of RedledgeiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of RedledgeiteHide

Synonyms of RedledgeiteHide

Other Language Names for RedledgeiteHide

Relationship of Redledgeite to other SpeciesHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for RedledgeiteHide

References for RedledgeiteHide

Localities for RedledgeiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide