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Pseudobrookite Group

A group of related mineral species

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Photos of Pseudobrookite Group (1036)Discuss Pseudobrookite Group

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Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

Pseudobrookite

Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany

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About Pseudobrookite GroupHide

This page provides mineralogical data about Pseudobrookite Group.

Unique IdentifiersHide

Mindat ID:

55975

Long-form identifier:

mindat:1:1:55975:1

IMA Classification of Pseudobrookite GroupHide

IMA status notes:

IMA Approved Group Name

Approval history:

The Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA-CNMNC) has approved a proposal (IMA 25-A) to validate ferropseudobrookite as a mineral species, to revise the definition of armalcolite following IMA recommendations, and to establish the pseudobrookite group.

Classification of Pseudobrookite GroupHide

Strunz-mindat (2026):

4.CB.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations

Chemical AnalysisHide

Oxide wt%:

	1
TiO₂	44.41 %
Al₂O₃	55.13 %
FeO	0.47 %
MgO	0.37 %
Total	100.38 %
Total:	200.76 %

Empirical formulas:

Sample ID	Empirical Formula
1	(Al_1.97Mg_0.02Fe_0.01)Ti_1.01O₅

Sample references:

ID	Locality	Reference	Notes
1	Mount Carmel, Kishon Mid Reach zone 2, Kishon river, Haifa District, Israel	Ma, Chi, Cámara, Fernando, Toledo, Vered, Bindi, Luca (2023) Griffinite, Al2TiO5: A New Oxide Mineral from Inclusions in Corundum Xenocrysts from the Mount Carmel Area, Israel. Crystals, 13 (10). 1427 doi:10.3390/cryst13101427	average of eight electron probe (EPMA) microanalyses

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	Year	Locality	Pressure (GPa)	Temp (K)
0009836	Armalcolite	Wechsler B A, Von Dreele R B (1989) Structure refinements of Mg2TiO4, MgTiO3 and MgTi2O5 by time-of-flight neutron powder diffraction Acta Crystallographica B45 542-549	1989	synthetic	0	293
0009835	Armalcolite	Wechsler B A, Von Dreele R B (1989) Structure refinements of Mg2TiO4, MgTiO3 and MgTi2O5 by time-of-flight neutron powder diffraction Acta Crystallographica B45 542-549	1989	synthetic	0	293
0000593	Armalcolite	Wechsler B A (1977) Cation distribution and high-temperature crystal chemistry of armalcolite American Mineralogist 62 913-920	1977		0	297
0000591	Armalcolite	Wechsler B A (1977) Cation distribution and high-temperature crystal chemistry of armalcolite American Mineralogist 62 913-920	1977		0	297
0000590	Armalcolite	Wechsler B A (1977) Cation distribution and high-temperature crystal chemistry of armalcolite American Mineralogist 62 913-920	1977		0	297
0002080	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		0	293
0002073	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		0	293
0018179	Pseudobrookite	Pauling L (1930) The crystal structure of pseudobrookite _cod_database_code 1011342 Zeitschrift fur Kristallographie 73 97-113	1930		0	293
0000594	Armalcolite	Wechsler B A (1977) Cation distribution and high-temperature crystal chemistry of armalcolite American Mineralogist 62 913-920	1977		0	673
0000592	Armalcolite	Wechsler B A (1977) Cation distribution and high-temperature crystal chemistry of armalcolite American Mineralogist 62 913-920	1977		0	1373
0002081	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		1.03	293
0002074	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		1.03	293
0002082	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		2.16	293
0002075	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		2.16	293
0002083	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		3.22	293
0002076	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		3.22	293
0002084	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		4.34	293
0002077	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		4.34	293
0002085	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		6.2	293
0002078	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		6.2	293
0002086	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		7.51	293
0002079	Pseudobrookite	Yang H, Hazen R M (1999) Comparative high-pressure crystal chemistry of karrooite, MgTi2O5, with different ordering states American Mineralogist 84 130-137	1999		7.51	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Armalcolite'
loop_
_publ_author_name
'Wechsler B A'
'Von Dreele R B'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 45 
_journal_year 1989
_journal_page_first 542
_journal_page_last 549
_publ_section_title
;
 Structure refinements of Mg2TiO4, MgTiO3 and MgTi2O5 by time-of-flight neutron
 powder diffraction
 Sample: T = 1773
;
_database_code_amcsd 0009836
_chemical_compound_source 'Synthetic'
_chemical_formula_sum '(Mg Ti2) O5'
_cell_length_a 9.7492
_cell_length_b 9.9896
_cell_length_c 3.7460
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 364.825
_exptl_crystal_density_diffrn      3.642
_symmetry_space_group_name_H-M 'B b m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,y,1/2+z'
  '-x,1/2+y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,1/2-y,-z'
  '1/2+x,1/2-y,1/2-z'
  'x,y,-z'
  '1/2+x,y,1/2-z'
  '-x,-y,z'
  '1/2-x,-y,1/2+z'
  'x,1/2-y,z'
  '1/2+x,1/2-y,1/2+z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,-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
MgM1   0.19482   0.25000   0.00000   0.60000   0.00600
TiM1   0.19482   0.25000   0.00000   0.40000   0.00600
MgM2   0.13298   0.56108   0.00000   0.20000   0.00320
TiM2   0.13298   0.56108   0.00000   0.80000   0.00320
O1   0.77021   0.25000   0.00000   1.00000   0.01120
O2   0.04653   0.11521   0.00000   1.00000   0.01050
O3   0.31235   0.06803   0.00000   1.00000   0.00870

Relationship of Pseudobrookite Group to other SpeciesHide

Pseudobrookite Group Members:

Armalcolite	MgTi⁴⁺₂O₅	Orth. mmm(2/m2/m2/m)
Ferropseudobrookite	Fe²⁺Ti⁴⁺₂O₅	Orth. mmm(2/m2/m2/m) : Cmcm
Griffinite	Al₂Ti⁴⁺O₅	Orth. mmm(2/m2/m2/m) : Cmcm
Pseudobrookite	Fe³⁺₂Ti⁴⁺O₅	Orth. mmm(2/m2/m2/m) : Cmcm
Sassite	Ti³⁺₂Ti⁴⁺O₅	Orth. mmm(2/m2/m2/m) : Cmcm

Click on any node to view relationships. Formula-derived relationship network for the group members above. Use Find related species to add formula-neighbour species outside the current group view. Solid links show inferred chemical differences; dashed violet links show same-formula crystallographic differences. Hydration states are not treated as relationship changes. These relationships do not imply any real-world substitution reactions between these species.

Related Minerals - Strunz-mindat Grouping Hide

4.CB.	Magnesiohögbomite-6N12S	Mg₅Al₁₁TiO₂₃(OH)	Trig. 3m(32/m) : R3m
4.CB.	Kidodite	BaMg₂Fe₁₆O₂₇	Hex. 6/mmm(6/m2/m2/m) : P6₃/mmc
4.CB.	Ferrohögbomite-2N2S	[(Fe²⁺,Mg,Zn,Al)₃(Al,Ti,Fe³⁺)₈O₁₅(OH)]₂	Hex. 6mm : P6₃mc
4.CB.	Zhenruite	(MoO₃)₂ · H₂O	Mon. 2/m : P2₁/m
4.CB.	Fuyuanite	Mg₇Nb₆O₁₈(OH)₈	Trig. 3 : P3
4.CB.	Virgilluethite	MoO₃ · H₂O	Mon. 2/m : P2₁/b
4.CB.	Pengite	(Pb₈Sb³⁺₃)_Σ11Sb⁵⁺₉O₃₅	Trig. 3m(32/m) : R3m
4.CB.05	Brizziite	NaSb⁵⁺O₃	Trig. 3 : R3
4.CB.05	Tistarite	Ti³⁺₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Hematite	Fe₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Ecandrewsite	ZnTiO₃	Trig. 3 : R3
4.CB.05	Melanostibite	Mn²⁺₂Fe³⁺Sb⁵⁺O₆	Trig. 3 : R3
4.CB.05	'UM1998-11-O-AuHSb'	Au⁺₂Sb³⁺O₂(OH)
4.CB.05	Karelianite	V³⁺₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Corundum	Al₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Eskolaite	Cr₂O₃	Trig. 3m(32/m) : R3c
4.CB.05	Geikielite	MgTiO₃	Trig. 3 : R3
4.CB.05	Akimotoite	MgSiO₃	Trig. 3 : R3
4.CB.05	'Unnamed (Fe-Cr Oxide)'	FeCrO₃	Trig. 3 : R3
4.CB.05	'Auroantimonate'	AuSbO₃
4.CB.05	Hemleyite	Fe²⁺SiO₃	Trig. 3 : R3
4.CB.05	Ilmenite	Fe²⁺TiO₃	Trig. 3 : R3
4.CB.05	Pyrophanite	Mn²⁺TiO₃	Trig. 3 : R3
4.CB.10	Bixbyite-(Fe)	(Fe,Mn)₂O₃	Iso.
4.CB.10	Bixbyite-(Mn)	Mn³⁺₂O₃	Iso. m3(2/m3) : Ia3
4.CB.10	Avicennite	Tl₂O₃	Iso. m3(2/m3) : Ia3
4.CB.15	Armalcolite	MgTi⁴⁺₂O₅	Orth. mmm(2/m2/m2/m)
4.CB.15	Ferropseudobrookite	Fe²⁺Ti⁴⁺₂O₅	Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.15	Griffinite	Al₂Ti⁴⁺O₅	Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.15	Sassite	Ti³⁺₂Ti⁴⁺O₅	Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.15	Pseudobrookite	Fe³⁺₂Ti⁴⁺O₅	Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.20	Zincovelesite-6N6S	Zn₃(Fe³⁺,Mn³⁺,Al,Ti)₈O₁₅(OH)	Trig. 3m(32/m) : P3m1
4.CB.20	Magnesiohögbomite-2N4S	(Mg_8.43Fe²⁺_1.57)_Σ=10Al₂₂Ti⁴⁺₂O₄₆(OH)₂	Hex. 6mm : P6₃mc
4.CB.20	Magnesiobeltrandoite-2N3S	(Mg₆Al₂)(Al₁₈Fe³⁺₂)O₃₈(OH)₂	Trig. 3m : P3m1
4.CB.20	Zincohögbomite-2N6S	[(Zn,Mg)₇(Al,Fe³⁺,Ti)₁₆O₃₁(OH)]₂	Hex. 6mm : P6₃mc
4.CB.20	Magnesiohögbomite-6N6S	[(Mg,Fe²⁺)₃(Al,Ti,Fe³⁺)₈O₁₅(OH)]₆	Trig. 3m(32/m) : R3m
4.CB.20	Magnesiohögbomite-2N3S	[(Mg,Fe²⁺,Zn)₄(Al,Ti,Fe³⁺)₁₀O₁₉(OH)]₂	Trig. 3m(32/m) : P31m
4.CB.20	Magnesiohögbomite-2N2S	[(Mg,Fe²⁺)₃[Al₇(Ti,Fe³⁺)]O₁₅(OH)]₂	Hex. 6mm : P6₃mc
4.CB.20	'Ferrohögbomite-6N12S'	[(Fe²⁺,Mg,Zn)₅(Al,Ti,Fe³⁺)₁₂O₂₃(OH)]₆	Trig. 3m(32/m) : R3m
4.CB.20	Zincohögbomite-2N2S	[(Zn,Al,Fe²⁺)₃(Al,Fe³⁺,Ti)₈O₁₅(OH)]₂	Hex. 6mm : P6₃mc
4.CB.25	Kleberite	FeTi₆O₁₁(OH)₅	Mon. 2/m : P2₁/b
4.CB.25	Pseudorutile	Fe³⁺₂Ti⁴⁺₃O₉	Hex. 622 : P6₃22
4.CB.30	Oxyvanite	V³⁺₂V⁴⁺O₅	Mon. 2/m : B2/b
4.CB.30	Berdesinskiite	V³⁺₂TiO₅	Mon.
4.CB.30	Kaitianite	Ti³⁺₂Ti⁴⁺O₅	Mon. 2/m : B2/b
4.CB.35	Machiite	Al₂Ti₃O₉	Mon. 2/m : B2/b
4.CB.35	Vestaite	(Ti⁴⁺Fe²⁺)Ti⁴⁺₃O₉	Mon. 2/m : B2/b
4.CB.35	Olkhonskite	(Cr,V)₂Ti₃O₉	Mon.
4.CB.35	Schreyerite	V³⁺₂Ti⁴⁺₃O₉	Mon. 2/m : B2/b
4.CB.40	Zincorinmanite-(Zn)	Zn₂Sb₂(Fe³⁺₄Zn₂)O₁₄(OH)₂	Hex. 6mm : P6₃mc
4.CB.40	Majindeite	Mg₂Mo₃O₈	Hex. 6mm : P6₃mc
4.CB.40	Almagreraite	CuZnMn⁴⁺₃O₈	Orth. mm2 : Pmn2₁
4.CB.40	Kamiokite	Fe₂Mo₃O₈	Hex. 6mm : P6₃mc
4.CB.40	Nolanite	V³⁺₈Fe³⁺₂O₁₄(OH)₂	Hex. 6mm : P6₃mc
4.CB.40	Iseite	Mn₂Mo₃O₈	Hex. 6mm : P6₃mc
4.CB.40	Rinmanite	Zn₂Sb₂Mg₂Fe₄O₁₄(OH)₂	Hex. 6 : P6₃
4.CB.45	Stibioclaudetite	AsSbO₃	Mon. 2/m : P2₁/m
4.CB.45	Claudetite	As₂O₃	Mon. 2/m
4.CB.50	Senarmontite	Sb₂O₃	Iso. m3m(4/m32/m) : Fd3m
4.CB.50	Arsenolite	As₂O₃	Iso. m3m(4/m32/m) : Fd3m
4.CB.55	Valentinite	Sb₂O₃	Orth. mmm(2/m2/m2/m) : Pccn
4.CB.60	Bismite	Bi₂O₃	Mon. 2/m : P2₁/b
4.CB.65	Sphaerobismoite	Bi₂O₃	Tet.
4.CB.70	Sillénite	Bi₁₂SiO₂₀	Iso. 23 : I23
4.CB.75	Kyzylkumite	V³⁺Ti₂O₅(OH)	Mon. 2/m : P2₁/b
4.CB.80	'Tietaiyangite'	Fe³⁺₄Fe²⁺TiO₉	Hex.
4.CB.85	Liuite	FeTiO₃	Orth. mmm(2/m2/m2/m) : Pnma
4.CB.90	Luogufengite	Fe₂O₃	Orth. mm2 : Pna2₁
4.CB.95	Wangdaodeite	FeTiO₃	Trig. 3m : R3c

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.

Pseudobrookite Group in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Igneous rock
- Normal crystalline igneous rock
  - Fine-grained ("volcanic") normal crystalline igneous rock
    - Basic volcanic rock
      - Basaltoid
        Basalt
        High-Ti basalt

Internet Links for Pseudobrookite GroupHide

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https://www.mindat.org/min-55975.html
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References for Pseudobrookite GroupHide

Reference List:

Locock, Andrew J.; Herd, Christopher D.K.; Ma, Chi; Steele-Macinnis, Matthew; Luth, Robert W. (2026) Ferropseudobrookite, armalcolite, pseudobrookite, and the pseudobrookite group. American Mineralogist. doi:10.2138/am-2026-10268

Localities for Pseudobrookite GroupHide

Showing 296 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.


Algeria
In Guezzam Province In Guezzam District Laouni ⓘ Laouni West intrusion	[Pseudobrookite] Lorand et al. (1987)

Antarctica
East Antarctica Enderby Land ⓘ Napier Complex	[Ferropseudobrookite] Akira MIYAKE et al. (2007)
Princess Elizabeth Land Ingrid Christensen Coast Prydz Bay Larsemann Hills ⓘ Lied promontory	[Armalcolite] Babenko et al. (2026)
Victoria Land Allan Hills ⓘ Allan Hills 85085 meteorite	[Armalcolite] Makoto Kimura & Ahmed El Goresy (1989)
ⓘ Allan Hills A77105 meteorite	[Ferropseudobrookite] Fujimaki Hirokazu (1981)

Argentina
Santa Cruz Province Río Chico Department ⓘ Cerro Redondo cinder cone	[Armalcolite] Tassara et al. (2017)

Australia
Queensland Western Downs Region Moonie ⓘ Miles meteorite	[Armalcolite] Ikeda et al. (1996) +1 other reference
Victoria City of Greater Geelong Anakie ⓘ Mount Anakie	[Pseudobrookite] W. D. Birch et al (in press)
ⓘ Eastern Hill	[Pseudobrookite] Museum Victoria Mineralogy Collection
ⓘ Middle Hill	[Pseudobrookite] Museum Victoria Mineralogy Collection
Moyne Shire Mortlake ⓘ Mount Shadwell Quarry	[Pseudobrookite] U. Kolitsch (SXRD) +1 other reference

Austria
Burgenland Oberpullendorf District Markt Sankt Martin Pauliberg ⓘ Basalt quarry	[Pseudobrookite] Schebesta (1983) +2 other references
Styria Leibnitz District Wildon Weitendorf ⓘ Basalt quarry	[Pseudobrookite] Exel (1993)
Südoststeiermark District Bad Gleichenberg Wilhelmsdorf ⓘ Stradner Kogel	[Pseudobrookite] Postl et al. (1996)
Klöch ⓘ Basalt quarry	[Armalcolite, Pseudobrookite] Taucher et al. (1998)
Tyrol Lienz District Prägraten am Großvenediger Dorferbach valley ⓘ Dorf glacier ?	[Pseudobrookite] Exel (1993)

Brazil
Paraná Foz do Iguaçu ⓘ Iguazu falls	[Pseudobrookite] Geological Survey Professional Paper 327 (U.S. Department of the Interior, 1959)
Pernambuco Fernando de Noronha archipelago ⓘ Chapéu do Nordeste islet	[Armalcolite] Kogarko et al. (2001)

Bulgaria
Pazardzhik Province Panagyurishte Municipality Panagyurishte ⓘ Medet Mine	[Pseudobrookite] Singer et al. (2008)

Canada
Alberta Burmis ⓘ Burmis Deposit	[Pseudobrookite] Richard Gunter Collection
Nunavut Coppermine River area ⓘ Muskox Intrusion	[Armalcolite] Roach et al. (1998)

Chile
Atacama Huasco Province Freirina Sierra La Totora district ⓘ Agua del Medio quarry	[Pseudobrookite] "Estudios geológico del sector de ... +2 other references

China
Shaanxi Hanzhong Ningqiang County ⓘ Ningqiang meteorite (Ningqiang carbonaceous chondrite)	[Armalcolite] Lin et al. (1996)
Shandong Linyi ⓘ Yimeng Mountains (Yimeng Shan)	[Pseudobrookite, Pseudobrookite var: Chromium-bearing Kennedyite] Lei Zhao (1991)

Czech Republic
Liberec Region ⓘ North Bohemian Uranium District	[Armalcolite, Pseudobrookite] Kühn +5 other references
Vysočina Region Třebíč District Kojetice ⓘ Kojetice metamanganolite occurrence	[Pseudobrookite] Novák et al. (2007)

Denmark
ⓘ North Jutland Region	[Pseudobrookite] Pedersen et al. (1975) +1 other reference

Finland
North Ostrobothnia Pudasjärvi ⓘ Rometölväs reef	[Pseudobrookite] Karinen

France
Auvergne-Rhône-Alpes Cantal Saint-Flour Albepierre-Bredons ⓘ Cunes quarry	[Pseudobrookite] Fermis (2023)
Haute-Loire Le Puy-en-Velay Espaly-Saint-Marcel ⓘ Mont Denise	[Pseudobrookite] Barrier D et al. (2004)
Le Brignon ⓘ Bizac volcano	[Pseudobrookite] P & E Médard collection
Puy-de-Dôme Issoire Mazaye ⓘ Les Châtelaunoux quarry (Petit Chambois quarry)	[Pseudobrookite] Philippe Rémy collection
Mont-Dore ⓘ Ravin des Chèvres (Rivaux Grands)	[Pseudobrookite] A. Lacroix (1905) +1 other reference
Murol ⓘ Groire	[Pseudobrookite] Queneau (n.d.)
ⓘ Tennis court outcrop	[Pseudobrookite] Hède
Riom Saint-Ours-les-Roches ⓘ Puy de Lemptégy	[Pseudobrookite] Vernay (1996)
ⓘ Puy de Ténuzet quarry	[Pseudobrookite] Mboungou-Kongo (2002)
French Polynesia Society Islands Windward Islands Tahiti Island Papeete ⓘ Faataua River (Fautaua)	[Pseudobrookite] COUREAU
French Southern and Antarctic Lands ⓘ Kerguelen Islands	[Armalcolite, Pseudobrookite] Ionov et al. (1995) +1 other reference
Occitanie Aveyron Rodez Sévérac-d'Aveyron ⓘ Lapanouse-de-Sévérac slag locality	[Pseudobrookite] Ł. Kruszewski EPMA/PXRD/Rietveld data +1 other reference
Hérault Béziers ⓘ Saint-Thibéry	[Pseudobrookite] photo and collection Bernard Bouissac
Réunion Saint-Joseph ⓘ Remparts river	[Pseudobrookite] Ko Jansen collection

Germany
Baden-Württemberg Karlsruhe Region Neckar-Odenwald-Kreis Waldbrunn Waldkatzenbach ⓘ Katzenbuckel	[Pseudobrookite] Stähle et al. (2003)
ⓘ Michelsberg Quarry	[Pseudobrookite] Stähle et al. (2002)
Bavaria Upper Bavaria Traunstein District ⓘ Chiemsee pseudocrater	[Armalcolite] Neumair et al. (2016)
Upper Palatinate Neustadt an der Waldnaab District Waidhaus ⓘ Hagendorf	[Pseudobrookite] Dill (2009)
Hesse Kassel Region Schwalm-Eder Frielendorf Großropperhausen ⓘ Sterkelsberg Quarry	[Pseudobrookite] Collection of Walter Göttler
Werra-Meißner Eschwege ⓘ Blaue Kuppe	[Pseudobrookite] Belendorff (2005)
ⓘ Nördlinger Ries Crater	[Armalcolite] J. W. Anthony et al.: Handbook of Mineralogy (1997)
North Rhine-Westphalia Arnsberg Märkischer Kreis Iserlohn Letmathe Helmke quarry nature reserve ⓘ Genna zinc smelter slag locality	[Pseudobrookite] Bender et al. (1994)
Cologne Aachen Stolberg ⓘ Binsfeldhammer lead smelter slag locality	[Pseudobrookite] Blaß et al. (1995)
ⓘ Birkengang zinc smelter slag locality	[Pseudobrookite]
ⓘ Münsterbusch zinc smelter slag locality	[Pseudobrookite] International Association of Collectors of Slag Minerals (3)
Euskirchen Kall ⓘ Copper smelter slag locality	[Pseudobrookite] Blaß et al. (1995)
Rhineland-Palatinate Ahrweiler Bad Breisig Brohl-Lützing ⓘ Leilenkopf	[Pseudobrookite] Brauns (1922)
Brohltal Burgbrohl ⓘ Herchenberg quarry	[Pseudobrookite] Hentschel (1983) +1 other reference
Wassenach ⓘ Kunkskopf quarry	[Pseudobrookite] Hentschel (1975) +1 other reference
Bernkastel-Wittlich Wittlich-Land Bettenfeld ⓘ Mosenberg	[Pseudobrookite] Weiß (1990)
Mayen-Koblenz Maifeld Ochtendung ⓘ Eiterköpfe quarry	[Pseudobrookite] Weiß (1990)
ⓘ Karmelenberg quarry	[Pseudobrookite] Weiß (1990)
ⓘ Langenberg quarry	[Pseudobrookite] Personally collected by Günter Frenz
ⓘ Wannenköpfe Quarry	[Pseudobrookite] Rondorf et al. (1988) +1 other reference
Mendig Bell ⓘ Rothenberg Quarry	[Pseudobrookite] Hentschel (1975)
Mendig ⓘ In den Dellen quarries	[Pseudobrookite] Blaß et al. (2003)
ⓘ Thelenberg	[Pseudobrookite]
Wingertsberg ⓘ Pumice quarries	[Pseudobrookite]
ⓘ Scoria quarry	[Pseudobrookite] collection C.&H. Schäfer
Pellenz Kruft ⓘ Korretsberg	[Pseudobrookite] Brauns (1922)
ⓘ Krufter Ofen	[Pseudobrookite]
ⓘ Tönchesberg	[Pseudobrookite] Leu (2017)
Nickenich ⓘ Nickenicher Sattel	[Pseudobrookite] Hentschel (1975)
ⓘ Nickenicher Weinberg	[Armalcolite, Pseudobrookite] Schäfer (2021)
Vordereifel ⓘ Bellerberg volcano	[Pseudobrookite] www.mindat.org (n.d.)
Ettringen ⓘ Caspar quarry	[Pseudobrookite] Hentschel (1983)
Sankt Johann Hochsimmer volcano ⓘ Hochsimmer quarries	[Pseudobrookite] Weiß (1990)
Vulkaneifel Daun Daun ⓘ Firmerich	[Pseudobrookite] Hentschel (1987)
Oberstadtfeld ⓘ Kahlenberg	[Pseudobrookite] Hentschel (1987)
Strohn ⓘ Wartgesberg	[Pseudobrookite] Weiß (1990)
Üdersdorf ⓘ Emmelberg	[Pseudobrookite] Schäfer (1979)
ⓘ Löhley	[Pseudobrookite] Guth (2000)
Utzerath ⓘ Hummerich	[Pseudobrookite] Weiß (1990)
Gerolstein Gerolstein Roth ⓘ Rother Kopf	[Pseudobrookite] Blaß et al. (2012)
Hillesheim ⓘ Graulay quarry	[Pseudobrookite] Hentschel (1993)
Niederbettingen ⓘ Wolfsbeul	[Pseudobrookite] Hentschel (1987)
Hohenfels-Essingen ⓘ Feuerberg	[Pseudobrookite] Collection of Bernd Ternes.
Oberbettingen ⓘ Lühwald	[Pseudobrookite] Hentschel (1987)
Rockeskyll Rockeskyll volcanic complex ⓘ Mäuseberg quarry	[Pseudobrookite] Hentschel (1987)
Walsdorf ⓘ Goßberg	[Pseudobrookite] Hentschel (1987)
Kelberg Drees ⓘ Niveligsberg	[Pseudobrookite] Schüller (1990)
Thuringia Greiz District Kauern ⓘ Lichtenberg Absetzer dump	[Pseudobrookite] Witzke et al. (1998)
Schmalkalden-Meiningen District Dolmar-Salzbrücke Kühndorf ⓘ Großer Dolmar	[Pseudobrookite] Schüller (1953)

Greece
Western Macedonia Grevena Grevena ⓘ Aetoraches Mine	[Pseudobrookite]
Kozani Kozani ⓘ Rodiani	[Pseudobrookite] ...

Greenland
Qeqertalik ⓘ Disko Island	[Armalcolite, Ferropseudobrookite] J. W. Anthony et al.: Handbook of Mineralogy (1997) +1 other reference
ⓘ Asuk	[Armalcolite] Pedersen (1979)

Hungary
Nógrád County Mátrakeresztes ⓘ Szalajkás Hill	[Pseudobrookite]

Indian Ocean
ⓘ Dirck Hartog Ridge	[Pseudobrookite] Maciąg et al. (2019)

Israel
Haifa District Kishon river Kishon Mid Reach zone 2 ⓘ Mount Carmel	[Griffinite, Sassite] Miyawaki et al. (2022)
Southern District Beersheba Subdistrict Tamar Regional Council Hatrurim Basin ⓘ Aravaite type locality	[Pseudobrookite] Britvin et al. (2021) +1 other reference
Har Parsa (Mt. Parsa) ⓘ Kahlenbergite occurrence	[Pseudobrookite] Krüger et al. (2021)

Italy
Aosta Valley Bard ⓘ Plan d'Albard	[Pseudobrookite] Wagner et al. (1985)
Campania Benevento Cusano Mutri ⓘ Regia Piana bauxite deposit	[Pseudobrookite] Mondillo N. et al. (2011)
Metropolitan City of Naples Ercolano ⓘ Le Novelle Quarry	[Pseudobrookite] Russo et al. (2011)
ⓘ Mount Vesuvius	[Pseudobrookite] Russo et al. (2004)
ⓘ Ottaviano	[Pseudobrookite] Matteo Chinellato collection
Sant'Anastasia ⓘ Lagno Amendolare	[Pseudobrookite] Imma Punzo find and collection
Somma Vesuviana ⓘ Trapolino Quarry (Cava Nuova)	[Pseudobrookite] Russo et al. (2004)
Lazio Viterbo Province Cellere ⓘ Monte di Cellere ?	[Pseudobrookite] Burli et al. (2010)
ⓘ Montefiascone	[Pseudobrookite] Bortolozzi (n.d.)
ⓘ Vetralla	[Pseudobrookite]
ⓘ Fosso Ricomero	[Pseudobrookite] Parodi et al. (1989)
ⓘ Pian di San Martino	[Pseudobrookite] Signoretti et al. (2004) +1 other reference
Sardinia Oristano Province Marrubiu ⓘ Funtanafigu quarry	[Pseudobrookite] Conti-Vecchi et al. (1991)
ⓘ Zuarbara quarry	[Pseudobrookite] Bortolozi G. (1986)
Sassari Province ⓘ Castelsardo	[Pseudobrookite] Bortolozzi (n.d.)
Sicily Agrigento Province Pelagie Islands (Pelagian Islands) Lampedusa (Lampedusa Island) ⓘ Baia dei conigli	[Pseudobrookite] Bortolozzi (n.d.)
Metropolitan City of Catania Biancavilla ⓘ Mt Calvario	[Pseudobrookite] Gianfagna et al. (2001) +2 other references
Veneto Padova Province Vo' ⓘ Zovon	[Pseudobrookite] Bortolozzi (n.d.)
Vicenza Province Altissimo ⓘ Santa Caterina pass	[Pseudobrookite] Boscardin et al. (2011)
Trissino ⓘ Faldo Mountain	[Pseudobrookite] Daleffe et al. (2000)
ⓘ Contrada Righettini	[Pseudobrookite] M. Boscardin (2002)

Japan
Fukushima Prefecture Sukagawa City Mt Uzumine (Utsumine) ⓘ Uzumine mine (Udumine mine; Uzumine pegmatite)	[Pseudobrookite] Nakajima et al. (2006)

Kazakhstan
Ulytau Region Satpayev ⓘ Satpayevskoye deposit	[Pseudobrookite] Akhmetova et al. (2025)

Madagascar
Amoron'i Mania Ambositra District Tsarasaotra ⓘ Unnamed tonalite quarry	[Pseudobrookite] Berger et al. (2014)
Betsiboka Tsaratanàna District Bekapaika Commune ⓘ Berere Pegmatite Field ?	[Ferropseudobrookite] - (2021)

Mauritius
Black River District ⓘ Le Morne Brabant	[Pseudobrookite] Favreau (n.d.)

Mexico
Chihuahua Pueblito de Allende ⓘ Allende meteorite	[Armalcolite] Brearley et al. (1998)
Durango Coneto de Comonfort Municipality América-Sapioris District (Potrillos) Sierra de San Francisco Potrillos ⓘ Orozco Mine	[Pseudobrookite] Panczner (1987)
Durango Municipality Cerro de los Remedios Victoria de Durango ⓘ Cerro de Mercado Mine	[Pseudobrookite] "Rock-magnetism and ore microscopy of ...
Guanajuato San Felipe Municipality San Felipe ⓘ Santa Bárbara Mine	[Pseudobrookite] Panczner (1987)
San Luis Potosí ⓘ El Toro cinder cone	[Armalcolite] J. W. Anthony et al.: Handbook of Mineralogy (1997)

Mongolia
Dornogovi Province Erdene District ⓘ Khamaryn– Khural–Khiid combustion metamorphic complex	[Ferropseudobrookite, Pseudobrookite] Peretyazhko et al. (2024)
Khovd Province Myangad District ⓘ Khaldzan Buragtag massif	[Armalcolite] Pavel M. Kartashov (n.d.)

New Zealand
Bay of Plenty Region Rotorua District Mount Ngongotaha ⓘ Hendersons Quarry	[Pseudobrookite] Martin Stolworthy Collection
Northland Region Kaipara District Aranga ⓘ Aranga Quarry	[Pseudobrookite] Essence of Microscope
Tasman Region Collingwood ⓘ Parapara Inlet Quarry	[Pseudobrookite] Challis et al. (1995) +1 other reference
Waikato Region Taupo District Atiamuri ⓘ Ongaroto Road	[Pseudobrookite] Collection of RJ Martin correlated to ...
Lake Taupo ⓘ Whakaipo Bay	[Pseudobrookite] Collection of RJ Martin
Poihipi Road ⓘ Roadcut Section	[Pseudobrookite] Collection of RJ Martin correlated to ...

Nigeria
Bauchi Ningi Kalato ⓘ Tibchi complex	[Ferropseudobrookite, Pseudobrookite] Sakoma et al. (2002)

Northwest Africa Meteorites
ⓘ ~~Northwest Africa 8182 Lunar meteorite (NWA 8182)~~	[Armalcolite] Zhang et al. (2020)

Norway
Telemark Bamble Havredal Midtre Havredal ⓘ ~~Wagnerite Prospect~~	[Pseudobrookite] Brøgger (1888) +1 other reference

Oman
Al Wusta Governorate Sayh al Uhaymir ⓘ Sayh al Uhaymir 290 meteorite	[Pseudobrookite] Zhang et al. (2015)
Dhofar Governorate ⓘ Dhofar 301 Lunar meteorite (Dho 301)	[Armalcolite] Meteoritical Bulletin No. 86
ⓘ Dhofar 733 Lunar meteorite (Dho 733)	[Armalcolite] Russell et al. (2003)
ⓘ Dhofar 925 Lunar meteorite (Dho 925)	[Armalcolite] - (2004, July)

Poland
Lower Silesian Voivodeship Kłodzko County Gmina Nowa Ruda Przygórze Bolesław Mine ⓘ Przygórze heap ?	[Pseudobrookite, Pseudobrookite var: Chromium-bearing Kennedyite] Kruszewski et al. (Lower Silesian Coal Basin)

Portugal
Azores São Miguel ⓘ Água de Pau Volcano	[Pseudobrookite] Sturla et al. (2020)
Ribeira Grande ⓘ Ruins of Lombadas syenite xenolith occurrence	[Pseudobrookite] Sturla et al. (2020)
Faro Loulé ⓘ Salir	[Pseudobrookite] Alves (n.d.)
Madeira Madeira Island Funchal São Martinho ⓘ Pico da Cruz	[Pseudobrookite] Alves (n.d.)

Romania
Argeş County Stoenești ⓘ Unnamed mining waste dump	[Pseudobrookite] Udubasa et al. (2011)
Covasna County ⓘ Bixad	[Pseudobrookite] Szakáll et al. (2010)
Hunedoara County Simeria ⓘ Uroi Hill (Arany Hill)	[Pseudobrookite] Koch +3 other references
Timiș Gătaia ⓘ Sumiga Hill	[Armalcolite] Seghedi I. (2006)

Russia
Buryatia Baunt District ⓘ Veseloe	[Ferropseudobrookite, Pseudobrookite] Doroshkevich et al. (2007)
Ulan-Ude ⓘ Ulan-Ude fluorite occurrence	[Ferropseudobrookite] Ripp et al. (2019)
Chelyabinsk Oblast ⓘ Chelyabinsk coal basin	[Pseudobrookite] Cesnokov et al. (1998)
ⓘ Kopeysk	[Armalcolite] Cesnokov et al. (1998)
Korkinsky District ⓘ Korkino	[Armalcolite] Sharygin et al. (2010)
Kabardino-Balkaria Chereksky District ⓘ Kulham complex	[Pseudobrookite] Kaigorodova (2017)
Kamchatka Krai Milkovsky District Tolbachik Volcanic field Great Fissure eruption (Main Fracture) Northern Breakthrough (North Breach) Second scoria cone ⓘ Arsenatnaya fumarole	[Pseudobrookite] doi.org (n.d.) +4 other references
ⓘ Yadovitaya fumarole	[Pseudobrookite] Pekov et al. (2012)
Krasnoyarsk Krai Taymyrskiy Autonomous Okrug Taimyr Peninsula ⓘ Khungtukun Massif	[Armalcolite] Pavel M. Kartashov (n.d.)
Taymyrsky Dolgano-Nenetsky District Kureika river ⓘ Dzheltul'skii massif (Dzhaltul)	[Armalcolite] Vereshchagin et al. (2025)
Murmansk Oblast Kovdorsky District ⓘ Kovdor Massif	[Pseudobrookite]
Primorsky Krai Dalnerechensky District ⓘ Ariadnoe Ultramafic Intrusion	[Pseudobrookite] Ishiwatari et al. (2004)
ⓘ Sakha	[Armalcolite] [World of Stones 12:49]
Oymyakonsky District ⓘ Elga meteorite	[Armalcolite] Litasov et al. (2017) +1 other reference
ⓘ Sikhote-Alin Mountains	[Armalcolite] 6th orogenic lherzolite conference 2014 ...
Zabaykalsky Krai Kalarsky District ⓘ Katugin Ta-Nb deposit	[Pseudobrookite] Victor V. Sharygin analytycal data (2012)

Serbia
Central Serbia Pčinja District Preševo ⓘ Cer occurrence	[Armalcolite, Pseudobrookite] Kostić +3 other references

Slovakia
Banská Bystrica Region Banská Bystrica District Brusno ⓘ Sopotnická Valley	[Armalcolite] Uher
Prešov Region Vranov nad Topľou District Vechec ⓘ ~~Vechec quarry~~	[Pseudobrookite] Ďuďa

South Africa
Free State Xhariep District Municipality Kopanong Local Municipality Jagersfontein ⓘ Jagersfontein Mine	[Armalcolite] Cairncross et al. (1995)
Limpopo Mopani District Municipality Ba-Phalaborwa Local Municipality ⓘ Phalaborwa	[Pseudobrookite] Cairncross et al. (1995)
Waterberg District Municipality Mogalakwena Local Municipality Mokopane Mogalakwena Mine ⓘ Sandsloot Mine	[Armalcolite] MCDONALD I. (2005)
Northern Cape Frances Baard District Municipality Sol Plaatje Local Municipality Kimberley KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine) ⓘ Bultfontein Mine	[Armalcolite] J. W. Anthony et al.: Handbook of Mineralogy (1997)
ⓘ Dutoitspan Mine	[Armalcolite] J. W. Anthony et al.: Handbook of Mineralogy (1997)

Spain
Andalusia Granada Colomera ⓘ Colomera meteorite	[Armalcolite] Prinz et al. (1983, March)
Aragon Huesca Estopiñán del Castillo ⓘ Soriana Quarry	[Pseudobrookite] B. Azambre et al. +1 other reference
Sopeira ⓘ Aulet	[Pseudobrookite] B. Azambre et al. +1 other reference
Canary Islands Las Palmas Province Gran Canaria Las Palmas de Gran Canaria ⓘ Cantera de La Esfinge	[Pseudobrookite] Personally collected in January 2013 +1 other reference
Lanzarote Tinajo ⓘ Tinguatòn	[Pseudobrookite] Sauro et al. (2021) +2 other references
Cantabria Santa María de Cayón ⓘ Totero	[Pseudobrookite] B. Azambre et al. +1 other reference
Castile-La Mancha Albacete Hellín ⓘ Cancarix lamproite intrusion	[Armalcolite] Venturelli et al. (1984) +2 other references
ⓘ Sierra de las Cabras	[Armalcolite, Pseudobrookite] Salvioli-Mariani et al. (1996)
Catalonia Lleida Alta Ribagorça El Pont de Suert ⓘ Unnamed diabase outcrop	[Pseudobrookite] Calvo Rebollar et al. (2022)
Pallars Jussà Tremp Casterner de les Olles ⓘ Les Collades ravine (Escales reservoir)	[Armalcolite] Joan Rosell
ⓘ Ophite outcrop	[Armalcolite] Joan Rosell SEM-EDS analysis
Murcia Cartagena La Aljorra ⓘ La Aljorra Quarries	[Armalcolite, Ferropseudobrookite, Pseudobrookite] Brigatti et al. (1993)
ⓘ Jumilla	[Armalcolite] J. W. Anthony et al.: Handbook of Mineralogy (1997)
ⓘ La Celia lamproite outcrops	[Pseudobrookite] Nobel +11 other references
ⓘ Nuestra Señora del Carmen Mines	[Pseudobrookite] Lewis (1883)

Taiwan
Taoyuan City Daxi district ⓘ Tsaolingshan volcano	[Pseudobrookite] Chen et al. (2003) +1 other reference

Tanzania
Dodoma Region Kongwa District Kongwa ⓘ Mautia Hill	[Pseudobrookite] McKie (1963)

UK
Northern Ireland County Antrim Cushendall ⓘ Tievebulliagh	[Pseudobrookite] Agrell et al. (1958) +1 other reference
Scotland Argyll and Bute Isle of Mull ⓘ Loch Scridain area	[Griffinite] Frank K. Mazdab collection
ⓘ Pennycross sapphire occurrence (Sgeir an Fhèidh to Crois an Ollaimb) ?	[Pseudobrookite] J.Ralph 2007
ⓘ Sithean Sluaigh	[Pseudobrookite] Smith (1965) +1 other reference

Ukraine
Crimea Alushta ⓘ Ayu-Dag Mountain	[Armalcolite, Pseudobrookite] Spiridonov et al. (2019)
Donetsk Oblast Volnovakha Raion ⓘ Dmitrievskii quarry	[Ferropseudobrookite] Sharygin et al. (2011)
Kirovohrad Oblast ⓘ Central Ukrainian Uranium Province	[Ferropseudobrookite] Cuney et al. (2012)

USA
Arizona ⓘ Greenlee County	[Pseudobrookite]
Big Lue Mountains (Big Laue Mountain) ⓘ State highway 78 roadcuts	[Pseudobrookite] Anthony et al. (1995)
Mohave County Cerbat Mountains Wallapai Mining District ⓘ Kingman Feldspar Mine (Kingman Feldspar Quarry)	[Pseudobrookite] Dr. Robert Housley
Pima County Ajo Mining District Little Ajo Mountains ⓘ Phelps Dodge Corporation Well No. 1	[Pseudobrookite] Anthony et al. (1995)
Batamote Mountains ⓘ Batamote Crater	[Pseudobrookite] Data provided by Janet Clifford
Pinal County Hayden ⓘ Ash Creek rhyolite	[Pseudobrookite] White (1992)
Saddle Mountain Mining District Winkelman area Saddle Mountain area ⓘ Ash Creek	[Pseudobrookite] White (1992) +1 other reference
Arkansas Hot Spring County ⓘ Magnet Cove	[Pseudobrookite] George C. Branner (1927)
California Kern County Boron ⓘ Kramer Borate deposit	[Pseudobrookite] U.S. Borax
Los Angeles County Agoura Hills ⓘ Lobo Canyon	[Pseudobrookite] R. Housley
San Bernardino County Trojan ⓘ Dish Hill Crater (Dish Hill; Siberia Hill; Siberia Hill Crater)	[Pseudobrookite] MarekC
Ventura County Thousand Oaks ⓘ Rolling Oaks Drive	[Pseudobrookite] DeVito (1992)
Colorado Chaffee County Nathrop ⓘ Ruby Mountain	[Pseudobrookite] USGS Bull 1716C +1 other reference
Eagle County Gore Mountains ⓘ Piney Ridge	[Pseudobrookite] Eckel et al. (1997)
Larimer County ⓘ Big Narrows area	[Pseudobrookite] Eckel et al. (1997)
Park County ⓘ McGuire pegmatite (Lone Lode; Lonesome pegmatite)	[Pseudobrookite] AmMin 84:754-763
Hawaii Kauai County ⓘ Kauai Island	[Pseudobrookite] Johnston et al. (1984)
ⓘ Koloa Volcanic Series	[Pseudobrookite, Pseudobrookite var: Kennedyite] Johnston et al. (1985)
Montana Garfield County ⓘ Smoky Butte (Smoky Butte Lamproite)	[Armalcolite, Pseudobrookite] Velde (1975) +1 other reference
Nevada Lander County ⓘ Izenhood Mining District	[Pseudobrookite] Fries +1 other reference
ⓘ Roosters Comb	[Pseudobrookite] USGS Bulletin 931-1 +1 other reference
Pershing County Farrell Mining District ⓘ Unnamed Locality	[Pseudobrookite] Walstrom (n.d.)
White Pine County ⓘ Robinson Mountain	[Pseudobrookite] Tony Nikischer specimen
New Hampshire Grafton County ⓘ Lincoln	[Pseudobrookite] Rice et al. (1971)
New Mexico Catron County ⓘ Old Horse Springs	[Pseudobrookite] Northrop et al. (1996)
Taylor Creek Mining District Sawmill Creek ⓘ Unnamed prospects	[Pseudobrookite] NMGS 37th Field Conference
ⓘ Squaw Creek Mine	[Pseudobrookite] - (1989)
Grant County ⓘ Big Lue Mountains	[Pseudobrookite] Northrop et al. (1996)
ⓘ Coal Creek	[Pseudobrookite] Ronald Gibbs
Sierra County ⓘ 74 Draw deposits	[Pseudobrookite] Jerry Cone Collection
ⓘ Black Range	[Pseudobrookite] Maxwell et al. (1986)
ⓘ Burro Ridge	[Pseudobrookite] Henderson (1985)
Hillsboro Mining District Hillsboro ⓘ Warm Springs Canyon	[Pseudobrookite] Steve Stuart collection- from giveaway ...
ⓘ Monticello Tin District	[Pseudobrookite] Northrop et al. (1996)
ⓘ Willow Springs Draw	[Pseudobrookite] Northrop et al. (1996)
ⓘ New Mexico Highway 1 roadcut	[Pseudobrookite] Gibbs (2013)
Paramount Canyon ⓘ Beryllium Virgin claim	[Pseudobrookite] New Mexico rocks & minerals: the collecting guide (including maps) +2 other references
Sierra Cuchillo (Cuchillo Negro Mts) ⓘ Cuchillo Negro Mining District	[Pseudobrookite] Northrop et al. (1996)
ⓘ Taylor Creek Tin Mining District (Black Range Tin District)	[Pseudobrookite] Northrop et al. (1996)
ⓘ Willow Creek	[Pseudobrookite] DeMark (1989) +1 other reference
Taos County No Agua Mining District ⓘ Brushy Mountain	[Pseudobrookite] Ramon DeMark and Jessie Kline
ⓘ United Perlite Mine	[Pseudobrookite] NMBMMR New Mexico Mineral symposium (2000)
Oregon Douglas County Diamond Lake ⓘ Lake Creek Quarry	[Pseudobrookite] K. Starnes
ⓘ Lemolo Lake	[Pseudobrookite] Henderson (1985)
ⓘ Lemolo Lake Quarry	[Pseudobrookite] Don Howard and Kent England Micro Probe ...
Klamath County ⓘ Summit Rock	[Pseudobrookite] Kleck (1970)
Texas Uvalde County Knippa ⓘ Knippa Quarry (Whites mines; Texas Traprock quarries; Traprock Hill) ?	[Armalcolite] Smith (1991)
Utah Beaver County ⓘ Mountain Spring Peak area	[Pseudobrookite] Ream (1979)
ⓘ Ruby Violet claims	[Pseudobrookite] Nassau et al. (1968)
Juab County ⓘ Thomas Range	[Pseudobrookite]
ⓘ Cubic claim	[Pseudobrookite] Foord et al. (1995)
ⓘ Eagles Nest Claim	[Pseudobrookite] Collected by Joe Marty
Pismire Knolls ⓘ Lookout prospect	[Pseudobrookite] Microprobe 7:9 pp 12-14
ⓘ Maynard's Mine	[Pseudobrookite] Ream (1979) +1 other reference
ⓘ SK Star Claim #2	[Pseudobrookite]
ⓘ Solar Wind claim	[Pseudobrookite] Grüll (2014)
ⓘ Starvation Canyon	[Pseudobrookite] Personally Collected by Dr. Scott ...
ⓘ Holfertite pit	[Pseudobrookite] Rick Dalrymple Collection
ⓘ Red Beryl Pit	[Pseudobrookite] Collected by and in the collection of ...
ⓘ Topaz Mountain	[Pseudobrookite] Palache (1934) +1 other reference
ⓘ The Cove (Topaz Valley)	[Pseudobrookite] Holfert et al. (1996)
Millard County ⓘ Smelter Knolls	[Pseudobrookite] Personally Collected by Dr. Scott ...
Piute County ⓘ Bixbyite occurrence north of Marysvale	[Pseudobrookite] Steve Rust collection
ⓘ Pine Canyon	[Armalcolite, Pseudobrookite] Mineralogical Magazine 1998 62 : 265-269
Washington Skamania County ⓘ Washougal Basalt Rock Quarry ?	[Armalcolite] Zach Capel
Wisconsin Marathon County Wausau Intrusive Complex Nine Mile pluton ⓘ Ladick Trucking & Excavating weathered granite quarry	[Pseudobrookite] Buchholz et al. (2007)
Wyoming Sweetwater County ⓘ Leucite Hills Mining District	[Armalcolite] gsa.confex.com (n.d.)

Zimbabwe
Masvingo ⓘ Mwenezi District	[Armalcolite] J. W. Anthony et al.: Handbook of Mineralogy (1997)

The Moon
Descartes Highlands ⓘ Apollo 16 landing site	[Armalcolite] Dowty et al. (1974) +1 other reference
Mare Tranquillitatis (Sea of Tranquility) ⓘ Tranquillity Base (Apollo 11 landing site)	[Armalcolite, Ferropseudobrookite] Locock et al. (2026)
Taurus-Littrow Valley ⓘ Apollo 17 landing site	[Armalcolite, Ferropseudobrookite] ... +2 other references

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Pseudobrookite Group

About Pseudobrookite GroupHide

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