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Whitlockite

A valid IMA mineral species - grandfathered
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About WhitlockiteHide

00268830017271927725077.jpg
Herbert P. Whitlock
Formula:
Ca9Mg(PO4)6(PO3OH)
The IMA formula for whitlockite originally showed the monofluorophosphate (PO3F)2- ion rather than hydroxylated phosphate (PO3OH)2- ion. The latter anionic group is correct; the former, attributed to the now-discredited whitlockite group mineral bobdownsite, was determined to be an analytical error (see McCubbin et al., 2018).
Colour:
Colourless, grey-white, light pink, light yellow; colourless in transmitted light.
Lustre:
Vitreous, Resinous
Hardness:
5
Specific Gravity:
3.12
Crystal System:
Trigonal
Name:
Named after Herbert Percy Whitlock (31 July 1868, New York City, New York, USA - 22 February 1948), Curator of Minerals, American Museum of Natural History, New York (USA).
Whitlockite Group.
Structurally related to wopmayite.

All non-terrestrial whitlockites are actually merrillite (Dowty, 1977).




Unique IdentifiersHide

Mindat ID:
4280
Long-form identifier:
mindat:1:1:4280:8

IMA Classification of WhitlockiteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ca9Mg(PO4)6(PO3F)
First published:
1941

Classification of WhitlockiteHide

8.AC.45

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
38.3.4.1

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2
19.4.8

19 : Phosphates
4 : Phosphates of Ca

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
WhtIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
WhtWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371

Physical Properties of WhitlockiteHide

Vitreous, Resinous
Transparency:
Transparent, Translucent
Colour:
Colourless, grey-white, light pink, light yellow; colourless in transmitted light.
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
3.12 g/cm3 (Measured)    3.102 g/cm3 (Calculated)

Optical Data of WhitlockiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.629 nε = 1.626
Max. Birefringence:
δ = 0.003
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic (convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis centred and vertical. The coloured rings are isochromatics, computed with the same physics as the Michel-Lévy bar above; the dark cross is the isogyre.

For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.

Chemistry of WhitlockiteHide

Mindat Formula:
Ca9Mg(PO4)6(PO3OH)

The IMA formula for whitlockite originally showed the monofluorophosphate (PO3F)2- ion rather than hydroxylated phosphate (PO3OH)2- ion. The latter anionic group is correct; the former, attributed to the now-discredited whitlockite group mineral bobdownsite, was determined to be an analytical error (see McCubbin et al., 2018).
Element Weights:
Element% weight
O42.632 %
Ca34.326 %
P20.633 %
Mg2.313 %
H0.096 %

Calculated from ideal end-member formula.
O
Ca
P
Mg
H

Crystallography of WhitlockiteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3c
Cell Parameters:
a = 10.33 Å, c = 37.103(5) Å
Ratio:
a:c = 1 : 3.592
Unit Cell V:
3,428.79 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Crystals exhibit rhombohedral development; rarely tabular {0001}. Coarse-granular to earthy. Cave pearls.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018920WhitlockiteTait K T, Barkley M C, Thompson R M, Origlieri M J, Evans S H, Prewitt C T, Yang H (2011) Bobdownsite, a new mineral species from Big Fish River, Yukon, Canada, and its structural relationship with whitlockite-type compounds The Canadian Mineralogist 49 1065-10782011Palermo #1 quarry, New Hampshire, USA0293
0004625WhitlockiteHughes J M, Jolliff B L, Rakovan J (2008) The crystal chemistry of whitlockite and merrillite and the dehydrogenation of whitlockite to merrillite American Mineralogist 93 1300-13052008synthetic0293
0004624WhitlockiteHughes J M, Jolliff B L, Rakovan J (2008) The crystal chemistry of whitlockite and merrillite and the dehydrogenation of whitlockite to merrillite American Mineralogist 93 1300-13052008synthetic0293
0004623WhitlockiteHughes J M, Jolliff B L, Rakovan J (2008) The crystal chemistry of whitlockite and merrillite and the dehydrogenation of whitlockite to merrillite American Mineralogist 93 1300-13052008Tip Top Pegmatite, Custer County, South Dakota0293
0004622WhitlockiteHughes J M, Jolliff B L, Rakovan J (2008) The crystal chemistry of whitlockite and merrillite and the dehydrogenation of whitlockite to merrillite American Mineralogist 93 1300-13052008Palermo Mine, North Groton, Grafton County, New Hampshire0293
0010333WhitlockiteTsirlin A A, Dikarev E V, Shpanchenko R V, Antipov E V (2006) A new whitlockite, Ca8.42Na1.16V(PO4)7 Acta Crystallographica C62 i13-i152006synthetic0293
0013352WhitlockiteSchroeder L W, Dickens B, Brown W E (1977) Crystallographic studies of the role of Mg as a stabilizing impurity in beta-Ca3(PO4)2. II. Refinement of Mg-containing beta-Ca3(PO4)2 Journal of Solid State Chemistry 22 253-2621977synthetic0293
0013351WhitlockiteSchroeder L W, Dickens B, Brown W E (1977) Crystallographic studies of the role of Mg as a stabilizing impurity in beta-Ca3(PO4)2. II. Refinement of Mg-containing beta-Ca3(PO4)2 Journal of Solid State Chemistry 22 253-2621977synthetic0293
0009550WhitlockiteKostiner E, Rea J R (1976) The crystal structure of manganese-whitlockite, Ca18Mn2H2(PO4)14 Acta Crystallographica B32 250-2531976synthetic0293
0012160WhitlockiteGopal R, Calvo C, Ito J, Sabine W K (1974) Crystal structure of synthetic Mg-whitlockite, Ca18Mg2H2(PO4)14 Canadian Journal of Chemistry 52 1155-11641974synthetic0293
0014686WhitlockiteGopal R, Calvo C (1972) Structural relationship of whitlockite and beta-Ca3(PO4)2 Nature Physical Science 237 30-321972Palermo Quarry0293
0014685WhitlockiteGopal R, Calvo C (1972) Structural relationship of whitlockite and beta-Ca3(PO4)2 Nature Physical Science 237 30-321972Palermo Quarry0293
0000445WhitlockiteCalvo C, Gopal R (1975) The crystal structure of whitlockite from the Palermo quarry American Mineralogist 60 120-13319750293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Loading XRD data...
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
2.88 Å(100)
3.21 Å(90)
2.60 Å(90)
5.24 Å(80)
3.47 Å(70)
1.72 Å(70)
1.93 Å(60)
6.55 Å(50)
1.88 Å(50)
1.55 Å(50)
Comments:
North Groton, New Hampshire, USA. Data from Frondel (1943).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration4.566-4.550
6 : Secondary asteroid phases4.566-4.560
Near-surface Processes
21 : Chemically precipitated carbonate, phosphate, iron formations
22 : Hydration and low-? subsurface aqueous alteration (see also #23)
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
49 : Oxic cellular biomineralization (see also #44)<0.54
Stage 10b: Anthropogenic minerals<10 Ka
57 : Other minerals formed by human processes
Geological Setting:
Pegmatites; phosphate-rock deposits.

Type Occurrence of WhitlockiteHide

General Appearance of Type Material:
Occurs as coarse granular masses with small open cavities lined with crystals. The crystals range in size from about 1 mm to 1.5 cm along the c-axis with an embedded crystal measuring about 3 cm. The crystals usually are simple rhombohedra.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, 95030; National Museum of Natural History, Washington, D.C., USA, 146196.
Geological Setting of Type Material:
Pegmatite
Associated Minerals at Type Locality:

Synonyms of WhitlockiteHide

Other Language Names for WhitlockiteHide

Varieties of WhitlockiteHide

Martinite (of Kloos)A carbonate-bearing variety of whitlockite.
ZeugiteA carbonate-bearing Whitlockite.

Relationship of Whitlockite to other SpeciesHide

Other Members of Whitlockite Subgroup:
Hedegaardite(Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH)Trig. 3m : R3c
StrontiowhitlockiteSr9Mg(PO4)6(PO3OH)Trig. 3m : R3c
WopmayiteCa6Na3◻Mn(PO4)3(PO3OH)4 Trig. 3m : R3c

Common AssociatesHide

Associations Based on Photo Data:
51 photos of Whitlockite associated with MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
27 photos of Whitlockite associated with RobertsiteCa2Mn3+3(PO4)3O2 · 3H2O
15 photos of Whitlockite associated with HydroxylapatiteCa5(PO4)3(OH)
13 photos of Whitlockite associated with KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3
12 photos of Whitlockite associated with Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
12 photos of Whitlockite associated with MitridatiteCa2Fe3+3(PO4)3O2 · 3H2O
11 photos of Whitlockite associated with QuartzSiO2
8 photos of Whitlockite associated with AlbiteNa(AlSi3O8)
8 photos of Whitlockite associated with LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2O
8 photos of Whitlockite associated with FairfielditeCa2Mn2+(PO4)2 · 2H2O

Related Minerals - Strunz-mindat GroupingHide

8.AC.'Crocobelonite-1M'CaFe3+2O(PO4)2Mon. 2/m : P21/m
8.AC.MagnesioqingheiiteNa2Mg(MgAl)(PO4)3Mon. 2/m
8.AC.ManganobadaloviteNaNaMn(MgFe3+)(AsO4)3Mon. 2/m : B2/b
8.AC.Changesite-(Y)(Ca8Y)◻Fe2+(PO4)7Trig. 3m : R3c
8.AC.Babunaite-(Nd)NdAsO4Tet. 4/m : I41/a
8.AC.CrocobeloniteCaFe3+2O(PO4)2Orth. mmm(2/m2/m2/m) : Pnma
8.AC.WopmayiteCa6Na3◻Mn(PO4)3(PO3OH)4 Trig. 3m : R3c
8.AC.BeershevaiteCaFe3+3(PO4)3OMon. 2/m : P21/m
8.AC.Epiebnerite(NH4)Zn(PO4)Mon. 2 : P21
8.AC.Ebnerite(NH4)Zn(PO4)Hex. 6 : P63
8.AC.XDyrnaesite-(La)Na8Ce4+(La,REE)2(PO4)6Orth. mmm(2/m2/m2/m) : Pnma
8.AC.EdtolliteK2NaCu5Fe3+O2(AsO4)4Tric. 1 : P1
8.AC.AngarfiteNaFe3+5(PO4)4(OH)4 · 4H2O Orth. 222 : C2221
8.AC.KabaloviteFe2+3Fe3+4(PO4)6Tric. 1 : P1
8.AC.Nazarchukite Ca2NiFe3+2(PO4)4Orth. mmm(2/m2/m2/m) : Pbca
8.AC.CalciohatertiteNaNaCa(CaFe3+)(AsO4)3Mon. 2/m : B2/b
8.AC.AlumoedtolliteK2NaCu5AlO2(AsO4)4Tric. 1 : P1
8.AC.02GrigorieviteCu3Fe3+2Al2(VO4)6Tric. 1 : P1
8.AC.02KoksharoviteCaMg2Fe3+4(VO4)6Tric. 1 : P1
8.AC.02ZiminaiteFe3+ 6 (VO4)6Tric. 1 : P1
8.AC.05HatertiteNa2(Ca,Na)(Fe3+,Cu)2(AsO4)3Mon. 2/m : B2/b
8.AC.05ErikapohliteCu3(Zn,Cu,Mg)4Ca2(AsO4)6 · 2H2OMon. 2/m : B2/m
8.AC.05'Unnamed (Na-Mg Arsenate Hydroxyarsenate)'NaMg3(AsO4)(AsO3OH)2Mon. 2/m : B2/b
8.AC.05'Unnamed (Na-Zn-H Arsenate Hydroxyarsenate)'Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2Mon. 2/m : B2/b
8.AC.05CalciojohilleriteNaCaMg3(AsO4)3Mon. 2/m : B2/b
8.AC.05Magnesiohatertite(Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3Mon. 2/m : B2/b
8.AC.05 va'Alluaudite-Na[]'4Na4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
8.AC.05 va'Alluaudite-Ca[]'4Ca4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
8.AC.05 va'Ferroalluaudite-NaNa'Na4Na4Fe2+4Fe3+8(PO4)12Mon. 2/m : B2/m
8.AC.05'Hagendorfite-NaNa'NaNaFe2+(Mn2+,Mn3+)(PO4)3 (?)Mon. 2/m : B2/b
8.AC.05O'DanieliteNa(Zn,Mg)3(AsO4)(AsO3OH)2Mon. 2/m : B2/b
8.AC.05HowardevansiteNaCuFe2(VO4)3Tric. 1 : P1
8.AC.05KhrenoviteNa3Fe3+2(AsO4)3Mon. 2/m : B2/b
8.AC.05ZincobradaczekiteNaZn2Cu2(AsO4)3Mon. 2/m : B2/b
8.AC.05ParaberzeliiteNaCa2Mg2(AsO4)3Mon. 2/m : B2/b
8.AC.05BadaloviteNa2Mg2Fe(AsO4)3Mon. 2/m : B2/b
8.AC.05MagnesiocanutiteNaMnMg2[AsO4]2[AsO2(OH)2]Mon. 2/m : B2/b
8.AC.05ManganohatertiteNaNaCa(MnFe3+)(AsO4)3Mon. 2/m : B2/b
8.AC.05CamanchacaiteNaCaMg2[AsO4][AsO3(OH)]2Mon. 2/m : B2/b
8.AC.07ZhanghuifeniteNa3Mn4Mg2Al(PO4)6Mon. 2/m
8.AC.07FerrobobfergusoniteNa2Fe2+5Fe3+Al(PO4)6Mon.
8.AC.10HagendorfiteNaCaMn2+Fe2+2(PO4)3Mon. 2/m : B2/b
8.AC.10'Ferrohagendorfite'NaCaFe2+Fe2+2(PO4)3Mon.
8.AC.10JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
8.AC.10VaruliteNaCaMn2+Mn2+2(PO4)3Mon. 2/m : B2/b
8.AC.10NickenichiteNa0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3Mon. 2/m : B2/b
8.AC.10ArseniopleiteNaCaMnMn2(AsO4)3Mon. 2/m
8.AC.10GroatiteNaCaMn2(PO4)[PO3(OH)]2Mon. 2/m : B2/b
8.AC.10Alluaudite(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3Mon. 2/m : B2/b
8.AC.10BradaczekiteNaCu4(AsO4)3Mon. 2/m : B2/b
8.AC.10Caryinite(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3Mon. 2/m
8.AC.10Ferroalluaudite(Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3Mon. 2/m : B2/b
8.AC.10Maghagendorfite(Na,◻)MgMn2+(Fe2+,Fe3+)2(PO4)3Mon. 2/m
8.AC.15Ferrowyllieite(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3Mon. 2/m : P21/b
8.AC.15QingheiiteNaNaMn2+(MgAl)(PO4)3Mon. 2/m : P21/b
8.AC.15Rosemaryite(Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3Mon. 2/m : P21/b
8.AC.15FerroqingheiiteNaNaFe2+(MgAl)(PO4)3Mon. 2/m : P21/m
8.AC.15Ferrorosemaryite◻NaFe2+Fe3+Al(PO4)3Mon. 2/m
8.AC.15BobfergusoniteNa2Mn5FeAl(PO4)6Mon. 2/m : P2/b
8.AC.15Wyllieite(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3Mon. 2/m
8.AC.17CzochralskiiteNa4Ca3Mg(PO4)4Orth. mmm(2/m2/m2/m) : Pnma
8.AC.18ManitobaiteNa16Mn2+ 25Al8(PO4)30Mon. m : Pb
8.AC.20MarićiteNaFe2+(PO4)Orth. mmm(2/m2/m2/m) : Pmna
8.AC.25Schäferite(NaCa2)Mg2(VO4)3Iso. m3m(4/m32/m) : Ia3d
8.AC.25Berzeliite(NaCa2)Mg2(AsO4)3Iso. m3m(4/m32/m) : Ia3d
8.AC.25MatyhiteCa18(Ca,◻)2Fe2+2(PO4)14Trig. 3m : R3c
8.AC.25Hedegaardite(Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH)Trig. 3m : R3c
8.AC.25Manganberzeliite(NaCa2)Mn2+2(AsO4)3Iso. m3m(4/m32/m) : Ia3d
8.AC.25Palenzonaite(NaCa2)Mn2+2(VO4)3Iso. m3m(4/m32/m) : Ia3d
8.AC.30BrianiteNa2CaMg(PO4)2Mon. 2/m : P21/b
8.AC.35Vitusite-(Ce)Na3(Ce,La,Nd)(PO4)2Orth. mm2 : Pca21
8.AC.40Bario-olgite(Ba,Sr)(Na,Sr,REE)2Na(PO4)2 · Trig. 3 : P3
8.AC.40Olgite(Sr,Ba)(Na,Sr,REE)2Na(PO4)2Trig. 3m(32/m) : P3m1
8.AC.45Magnesiochangesite-(Ce)(Ca8Ce)◻Mg(PO4)7Trig. 3m : R3c
8.AC.45TuiteCa3(PO4)2Trig. 3m(32/m) : R3m
8.AC.45FerromerrilliteCa9NaFe2+(PO4)7Trig. 3m : R3c
8.AC.45StrontiowhitlockiteSr9Mg(PO4)6(PO3OH)Trig. 3m : R3c
8.AC.45Magnesiochangesite-(Y)(Ca8Y)◻ Mg(PO4)7Trig. 3m : R3m
8.AC.45Changesite-(Ce)(Ca8Ce)◻Fe2+(PO4)7Trig. 3m : R3c
8.AC.45MerrilliteCa9NaMg(PO4)7Trig. 3m : R3m
8.AC.47IwateiteNa2BaMn(PO4)2Trig. 3 : P3
8.AC.47OzerovaiteNa2KAl3(AsO4)4Orth. mmm(2/m2/m2/m) : Cmca
8.AC.47YurmariniteNa7(Fe3+,Mg,Cu)4(AsO4)6Trig. 3m(32/m) : R3c
8.AC.47PansneriteK3Na3(Fe3+,Al)6(AsO4)8Orth. mmm(2/m2/m2/m)
8.AC.47AnatolyiteNa6(Ca,Na)(Mg,Fe3+)3Al(AsO4)6Trig. 3m(32/m) : R3c
8.AC.50FillowiteNa3CaMn2+11(PO4)9Trig. 3 : R3
8.AC.50GalileiiteNa3Fe2+Fe2+11(PO4)9Trig. 3 : R3
8.AC.50JohnsomervilleiteNa3CaFe11(PO4)9Trig. 3 : R3
8.AC.50XenophylliteNa4Fe2+7(PO4)6Tric. 1 : P1
8.AC.50UdinaiteNaMg4(VO4)3Tet. 42m : I42d
8.AC.50ArsenudinaiteNaMg4(AsO4)3Tet. 42m : I42d
8.AC.50ChladniiteNa3CaMg11(PO4)9Trig. 3 : R3
8.AC.52Lasnierite(Ca,Sr)(Mg,Fe2+)2Al(P[O,F]4)3Orth. mmm(2/m2/m2/m) : Pbcn
8.AC.55PharmazinciteKZnAsO4Hex. 6 : P63
8.AC.57ZubkovaiteCa3Cu3(AsO4)4Mon. 2 : B2
8.AC.60KosnariteKZr2(PO4)3Trig. 3m(32/m) : R3c
8.AC.65Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
8.AC.70StanfielditeCa4Mg5(PO4)6Mon.
8.AC.75RonneburgiteK2MnV4O12Mon. 2/m
8.AC.80TillmannsiteAg3Hg[(V,As)O4]Tet. 4 : I4
8.AC.85FilatoviteK(Al,Zn)2(As,Si)2O8Mon. 2/m

Fluorescence of WhitlockiteHide

Not fluorescent.

Other InformationHide

IR Spectrum:
Spectrum very similar to that of synthetic tricalcium phosphate.
Electrical:
Piezoelectric, pyroelectric.
Notes:
Readily soluble in dilute acids.
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 WhitlockiteHide

References for WhitlockiteHide

Reference List:

Localities for WhitlockiteHide

Showing 138 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.
Hide all sections | Show all sections

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
 
  • Tlemcen Province
    • Sebdou District
Bannister (1947) +1 other reference
Anguilla
 
Palache et al. (1951)
Antarctica
 
  • East Antarctica
Semenova et al. (1992, March)
    • Queen Maud Land
      • Steingarden Nunataks site
Brandstätter et al. (2014)
Brandstätter et al. (2014)
Brandstätter et al. (2014)
Argentina
 
  • Buenos Aires Province
    • Coronel Suaréz
      • D'Orbigny
Hwang et al. (2014)
  • Chaco Province
    • Doce de Octubre Department
      • Gancedo
Bunch et al. (1970)
Australia
 
  • South Australia
    • District Council of Mount Remarkable
      • Wilmington
Pring et al. (1999) +1 other reference
    • Naracoorte Lucindale Council
      • Naracoorte Caves National Park
Forbes et al. (2006)
    • Pastoral Unincorporated Area
      • Gammon Ranges
        • Vulkathunha-Gammon Ranges National Park
Snow et al. (2014)
      • Weekeroo Station
Bunch et al. (1970)
  • Western Australia
    • Dundas Shire
      • Cocklebiddy Roadhouse
Caves: processes +1 other reference
      • Madura Roadhouse
Bridge (1977)
Austria
 
  • Carinthia
    • Spittal an der Drau District
      • Millstatt lake
Walter (1998) +1 other reference
      • Spittal an der Drau
        • Wolfsberg
Pichler (2009)
Bahamas
 
  • San Salvador District
    • San Salvador Island
Onac et al. (2001) +1 other reference
Brazil
 
  • Ceará
    • Salitre
adsabs.harvard.edu (n.d.)
  • Minas Gerais
    • Martinho Campos
      • Ibitira
Heim et al. (March 1999)
  • Paraíba
    • Picuí
Sergio Varvello collection
  • Rio de Janeiro
    • Angra dos Reis
      • Ilha Grande
Prinz et al. (1977) +1 other reference
Canada
 
  • Manitoba
    • Lac-du-Bonnet area
      • Bernic Lake
153-155. +2 other references
  • Newfoundland and Labrador
    • Labrador
      • Seal Lake alkaline complex (Letitia Lake)
GSC locality database +1 other reference
  • Saskatchewan
    • Springwater
Davis et al. (1989, March)
  • Yukon
    • Dawson mining district
Horvath (2003) +1 other reference
Richard Gunter Collection.
[MinRec 23:Yukon 34] +1 other reference
Cape Verde
 
  • Barlavento Islands
    • Sal Island
Maffeis et al. (2026)
Maffeis et al. (2026)
Chile
 
  • Antofagasta
    • Antofagasta Province
      • Taltal
Kimura et al. (1991)
China
 
  • Anhui
    • Bozhou
      • Qiaocheng District
        • Xiaoyanzhuang
Kuiren Wang and Junxin Wang (1987)
  • Guangdong
    • Shaoguan
      • Wengyuan Co.
Xie et al. (2014)
  • Hubei
    • Suizhou
      • Zengdu District
        • Xihe
Chen et al. (2008) +1 other reference
  • Jiangsu
    • Taizhou
      • Gaogang District
        • Sixiangkou
Chen et al. (2004)
  • Jilin
    • Jilin
      • Chuanying District
Wankang Huang et al. (1978)
  • Shaanxi
    • Hanzhong
      • Ningqiang County
Wang et al. (2009)
  • Xinjiang
    • Changji Autonomous Prefecture (Sanji Autonomous Prefecture)
      • Fukang Co.
Connolly et al. (2006)
Cuba
 
  • Santiago de Cuba Province
Anthony et al. (2016)
Curaçao
 
Palache et al. (1951) +1 other reference
France
 
  • Provence-Alpes-Côte d'Azur
    • Alpes-Maritimes
      • Grasse Arrondissement
        • Saint-Cézaire-sur-Siagne
Audra et al. (2019)
Germany
 
  • Bavaria
    • Upper Bavaria
      • Traunstein District
Neumair et al. (2016)
    • Upper Palatinate
      • Neustadt an der Waldnaab District
        • Waidhaus
          • Hagendorf
Dill (2015)
  • Hesse
    • Giessen Region
      • Lahn-Dill-Kreis
        • Lahnau
          • Waldgirmes
Weiß (1990)
  • North Rhine-Westphalia
    • Cologne
      • Aachen
        • Stolberg
Blaß et al. (1995)
  • Saxony-Anhalt
    • Altmarkkreis Salzwedel
      • Salzwedel
        • Hohenlangenbeck
Matthes (1995)
  • Schleswig-Holstein
    • Nordfriesland
      • Joldelund
Wittern (2001)
  • Thuringia
    • Greiz District
      • Kauern
Witzke et al. (1998)
India
 
  • Bihar
    • Gaya District
Lundberg et al. (1988)
  • Tamil Nadu
    • Dindigul district
Kurat et al. (2005)
Iran
 
  • Kurdistan Province
    • Divandarreh County
Amin et al. (2022)
  • Markazi Province
    • Delijan County
      • Naragh (Naraq; Narāq; Narāk)
Adib D. (1979)
Italy
 
  • Marche
    • Macerata Province
      • Pollenza
Maras et al. (1979)
  • Sicily
    • Agrigento Province
      • Agrigento
Levi-Donati G.R. (1972)
Kenya
 
  • Laikipia County
Schulze et al. (1993) +1 other reference
Malaysia
 
  • Sarawak
    • Miri Division
Bridge et al. (1983) +1 other reference
Mexico
 
  • Coahuila
    • Cuatro Ciénegas Municipality
      • Cuatro Ciénegas
        • Limestone caves
Forti (2006)
  • Durango
    • Mapimí Municipality
      • Mapimí
Panczner (1987)
  • Guerrero
    • Acapulco de Juárez Municipality
Michel-Lévy et al. (1978)
Middle East
 
Vapnik et al. (2006)
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Amerzgane Cercle
        • Ouisselsate Caïdat
Favreau (2012)
  • Marrakesh-Safi Region
    • Rehamna Province
      • Sidi Bou Othmane Cercle
        • Jebilet Mountain (Djebilet Mountain)
          • Sidi Bou Othmane
Favreau (2012)
Namibia
 
  • Erongo Region
    • Dâures Constituency
von Bezing (2007)
Keller (1974)
    • Karibib Constituency
      • Okatjimukuju Farm 55 (Friedrichsfelde Farm)
Keller et al. (1989)
  • Oshikoto Region
    • Tsumeb
New Mineral Names. Mineral News et al. (January 2012)
Nigeria
 
  • Katsina
    • Faskari
McCoy et al. (1999) +2 other references
Northwest Africa Meteorites
 
Greshake (2014)
Norway
 
  • Telemark
    • Bamble
Morton (1961)
Oman
 
  • Al Wusta Governorate
    • Sayh al Uhaymir
MPS 37 (2002)
Meteoritical Bulletin et al. (2003)
  • Dhofar Governorate
Taylor et al. (2000)
Yukio et al. (2006)
Philippines
 
  • Luzon
    • Calabarzon Region
      • Quezon province
H. J. Axon and M. J. Nasir (1977)
Poland
 
  • Greater Poland Voivodeship
    • Poznań
Karwowski et al. (2015)
  • Lower Silesian Voivodeship
    • Dzierżoniów County
      • Gmina Niemcza
        • Gilów
Pieczka A. et al. (2004)
    • Świdnica County
      • Gmina Świdnica
Włodek et al. (2011)
Pieczka et al. (2015)
Pieczka et al. (2017)
  • Masovian Voivodeship
    • Warsaw
Stepniewski et al. (1998)
  • Silesian Voivodeship
    • Rybnik County
      • Gmina Czerwionka-Leszczyny
Kruszewski et al. (2012)
Portugal
 
  • Viana do Castelo
    • Ponte da Barca
      • Touvedo (São Lourenço e Salvador)
Leal Gomes et al. (2009)
Romania
 
  • Galați County
    • Galați
HÎRTOPANU et al. (2014)
  • Maramureș County
    • Târgu Lăpuș
HÎRTOPANU et al. (2025)
  • Mehedinti County
    • Dubova
Puşcaş et al. (2014)
Russia
 
  • Altai Krai
Sokol et al. (2022)
  • Buryatia
    • Zakamensky District
      • Dzhida W-Mo District
Pavel M. Kartashov (n.d.)
  • Chukotka Autonomous Okrug
    • Chaunskii District (Chaun)
Zaslavskaya et al. (1991, March)
  • Magadan Oblast
    • Severo-Evensky District
Sharygin et al. (2006)
  • Murmansk Oblast
    • Kolsky District
- (2010)
Saint Helena, Ascension and Tristan da Cunha
 
[var: Martinite (of Kloos)] Richards (1928) +1 other reference
Saudi Arabia
 
  • Mecca Region
Saudi Geological Survey Open-File ... +1 other reference
South Africa
 
  • Gauteng
    • West Rand District Municipality
      • Far West Rand
        • Western Sector
          • Carletonville
Martini et al. (1978)
  • Mpumalanga
    • Ehlanzeni District Municipality
      • Mbombela Local Municipality
        • Mbombela
Martini (1997)
  • North West
    • Dr Kenneth Kaunda District Municipality
      • JB Marks Local Municipality
        • Ventersdorp
Martini et al. (1978)
  • Western Cape
    • West Coast District Municipality
      • Cederberg Local Municipality
Miller et al. (2016)
Spain
 
  • Andalusia
    • Granada
      • Colomera
Takeda et al. (2003)
  • Aragon
    • Huesca
      • Isábena
        • Roda de Isábena
Domanik et al. (2005)
  • Castile and Leon
    • Salamanca
      • Garcirrey
Calvo (2015)
  • Catalonia
    • Barcelona
      • Vallès Occidental
        • Montcada i Reixac
Rosell et al. (2010)
USA
 
  • California
    • Trinity County
      • Klamath Mountains
        • Hyampom
Lydon (1964) +3 other references
  • Illinois
    • Jo Daviess County
      • Woodbine
Bunch et al. (1970)
  • Iowa
    • Emmet County
Fuchs L H (1967)
  • Kentucky
    • Carroll County
Davis et al. (1989, March)
  • Maine
    • Oxford County
      • Newry
King et al. (1994) +1 other reference
Anthony et al. (2016)
King et al. (6)
  • Nevada
Barrick Gold Corporation
    • Humboldt County
      • Osgood Mountains
        • Potosi Mining District
          • Twin Creeks Mine
Min News (1999)
    • Mineral County
      • Candelaria Mining District
Kampf et al. (2016)
        • Candelaria Silver Mine
Adams (2019)
  • New Hampshire
    • Grafton County
      • Groton
Rocks & Minerals: 16: 208-211. +6 other references
    • Strafford County
      • Strafford
Rocks & Min.:64:504. +1 other reference
  • Puerto Rico
    • Mayagüez
[var: Martinite (of Kloos)] Anthony et al. (2016)
Wise (1997)
  • South Dakota
    • Custer County
      • Custer Mining District
        • Custer
Januzzi et al. (1976)
        • Fourmile
Rocks & Minerals: 60: 117. +2 other references
        • Pringle
          • Cicero Peak
Smith et al. (2000)
  • Texas
    • Castro County
      • Dimmitt
Rubin et al. (1983)
  • Utah
    • Rich County
      • Crawford Mountains
- (2005)
- (2005)
- (2005)
- (2005)
- (2005)
- (2005)
- (2005)
      • Laketown Mining District
- (2005)
      • Woodruff Creek
- (2005)
  • West Virginia
    • Grant County
      • Landes
Meteoritics
  • Wisconsin
    • Waushara County
      • Saxeville
Bunch et al. (1970)
Venezuela
 
  • Federal Dependencies
Frondel (1943) +1 other reference
  • Miranda
Urbani (1996)
Franco Urbani (2009)
Outer Space
 
  • Main Belt Asteroids
Terada et al. (2018)
The Moon
 
  • Descartes Highlands
Dowty et al. (1974)
  • Mare Imbrium
    • Palus Putredinis
Peckett et al. (1972) +1 other reference
 
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