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Kentrolite

A valid IMA mineral species - grandfathered
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06203530017061179071760.jpg
Kentrolite

LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden
00241650017061179089444.jpg
Kentrolite, etc.

Big Chief Mine, Percha Creek, Hillsboro, Hillsboro Mining District, Sierra County, New Mexico, USA
04256890014977651562276.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
01096740015838485806629.jpg
Kentrolite

LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden
02661800015570099221665.jpg
Kentrolite, etc.

Big Chief Mine, Percha Creek, Hillsboro, Hillsboro Mining District, Sierra County, New Mexico, USA
02519380014951216842901.jpg
Kentrolite

Torr Works Quarry, Cranmore, Mendip, Somerset, England, UK
09717750017061179083741.jpg
Kentrolite

LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden
00241650017061179089444.jpg
Kentrolite, etc.

Big Chief Mine, Percha Creek, Hillsboro, Hillsboro Mining District, Sierra County, New Mexico, USA
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About KentroliteHide

Formula:
Pb2Mn3+2(Si2O7)O2
Colour:
Black, sometimes with dark red internal reflections
Lustre:
Sub-Adamantine, Resinous, Greasy
Hardness:
5
Specific Gravity:
6.26
Crystal System:
Orthorhombic
Name:
Named in 1880 by Alexis Damour and Gerhard von Rath from the Greek ÎșÎ”ÎœÏ„ÏÎŻ for "thorn" or "spike", in allusion to its habit. The type locality is given by Damour & von Rath (1881) as "im sĂŒdlichen Chile" (in southern Chile).
Type Locality:
ⓘ Chile
Kentrolite-Melanotekite Series.

A synthetic aluminium analogue is known.


Unique IdentifiersHide

Mindat ID:
2185
Long-form identifier:
mindat:1:1:2185:8
GUID
(UUID V4):
0a85c4d2-f295-4881-bd9d-c733b02fa6be

IMA Classification of KentroliteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Pb2Mn3+2O2(Si2O7)

Classification of KentroliteHide

Strunz-mindat (2024):
9.BE.80

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
Dana 8th ed.:
56.2.10.2

56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Hey's CIM Ref.:
14.13.7

14 : Silicates not Containing Aluminum
13 : Silicates of Pb

Mineral SymbolsHide

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

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

Physical Properties of KentroliteHide

Lustre:
Sub-Adamantine, Resinous, Greasy
Transparency:
Translucent
Colour:
Black, sometimes with dark red internal reflections
Streak:
Brown to yellowish brown
Hardness:
5 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Distinct/Good
{110}
Fracture:
Irregular/Uneven
Density:
6.26 g/cm3 (Measured)    6.29 g/cm3 (Calculated)

Optical Data of KentroliteHide

Type:
Biaxial (+)
RI values:
nα = 2.100 nβ = 2.200 nγ = 2.310
2V:
Measured: 88° , Calculated: 88°
Birefringence:
0.21
Max Birefringence:
δ = 0.210
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
strong r < v
Optical Extinction:
Parallel
Pleochroism:
Strong
Comments:
X= bright yellowish pink
Y= reddish brown
Z= deep brownish red

Chemistry of KentroliteHide

Mindat Formula:
Pb2Mn3+2(Si2O7)O2
Elements listed:
Mn, O, Pb, Si - search for minerals with similar chemistry
Common Impurities:
Ti,Al,Fe,Zn,Mg

Chemical AnalysisHide

Oxide wt%:
 1
SiO2 28.35 %
TiO20.05 %
Al2O3 2.37 %
Fe2O330.82 %
MnO28.99 %
MgO0.81 %
CaO2.10 %
BaO2.29 %
PbO0.86 %
Na2O1.35 %
K2O0.40 %
P2O50.05 %
H2O0.48 %
S0.01 %
Total:98.93 %
Sample references:
IDLocalityReferenceNotes
1Klint mine, FolkÀrna, Avesta, Dalarna County, Sweden
Geijer, P. (1939) Kentrolite in a Metamorphic Manganese-Iron Ore of Sedimentary Origin. Geologiska Föreningen i Stockholm Förhandlingar. 61: 204-208
Wet chemical analysis by Dr. A. Bygdén of the Geological Survey of Sweden.

Crystallography of KentroliteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcm
Cell Parameters:
a = 6.961 Å, b = 11.018 Å, c = 9.964 Å
Ratio:
a:b:c = 0.632 : 1 : 0.904
Unit Cell V:
764.20 ų (Calculated from Unit Cell)
Morphology:
Prismatic to equant. Isolated crystals or rosettes, sheaflike groups, massive.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001395KentroliteMoore P B, Sen Gupta P K, Shen J, Schlemper E O (1991) The kentrolite-melanotekite series, 4Pb2(Mn,Fe)2O2[Si2O7]: Chemical crystallographic relations, lone-pair splitting, and cation relation to 8URe2 American Mineralogist 76 1389-139919910293
0004536KentroliteDorsam G, Liebscher A, Wunder B, Franz G (2008) Crystal structures of synthetic melanotekite (Pb2Fe2Si2O9), kentrolite (Pb2Mn2Si2O9), and the aluminum analogue (Pb2Al2Si2O9) American Mineralogist 93 573-5832008synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.56 Å(60)
3.71 Å(80)
3.51 Å(80)
3.24 Å(80)
2.96 Å(50)
2.90 Å(100)
2.86 Å(100)
2.74 Å(100)
Comments:
20-586 (natural)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits
Geological Setting:
Oxide zinc deposits.

Type Occurrence of KentroliteHide

Other Language Names for KentroliteHide

Relationship of Kentrolite to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
40 photos of Kentrolite associated with RhodochrositeMnCO3
7 photos of Kentrolite associated with VanadinitePb5(VO4)3Cl
6 photos of Kentrolite associated with Arsenic-bearing VanadinitePb5[(V,As)O4]3Cl
5 photos of Kentrolite associated with CalciteCaCO3
5 photos of Kentrolite associated with BaryteBaSO4
4 photos of Kentrolite associated with Axinite-(Mn)Ca2Mn2+Al2BSi4O15(OH)
2 photos of Kentrolite associated with CerussitePbCO3
2 photos of Kentrolite associated with BrauniteMn2+Mn3+6(SiO4)O8
2 photos of Kentrolite associated with AragoniteCaCO3
2 photos of Kentrolite associated with QuartzSiO2

Related Minerals - Strunz-mindat GroupingHide

9.BE.ParalomonosoviteNa6◻4Ti4(Si2O7)2[PO3OH][PO2(OH)2]O2(OF)Tric. 1 : P1
9.BE.CĂĄmaraiteBa3Na(Fe2+,Mn)8Ti4(Si2O7)4O4(OH,F)7Tric. 1
9.BE.ChristofschÀferite-(Ce)Ce3CaMnTiFe(3+)Ti2(Si2O7)2O8 Mon. 2/m : P21/m
9.BE.BobshannoniteNa2KBa(Mn,Na)8(Nb,Ti)4(Si2O7)4O4(OH)4(O,F)2Tric.
9.BE.Calciomurmanite(Na,◻)2Ca(Ti,Mg,Nb)4[Si2O7]2O2(OH,O)2(H2O)4Tric. 1 : P1
9.BE.Batievaite-(Y)Y2Ca2Ti(Si2O7)2(OH)2(H2O)4Tric. 1 : P1
9.BE.Delhuyarite-(Ce)Ce4Mg(Fe3+,W)3◻(Si2O7)2O6(OH)2Mon. 2/m : B2/m
9.BE.XAsimowiteFe2+4O(Si2O7)Orth. mmm (2/m 2/m 2/m) : Imma
9.BE.MoxuanxueiteNaCa6Zr(Si2O7)2OF3Tric. 1 : P1
9.BE.Alexkuznetsovite-(Ce)Ce2Mn(CO3)(Si2O7)Mon. 2/m : P21/b
9.BE.Biraite-(La)La2Fe2+(CO3)(Si2O7)Mon. 2/m : P21/b
9.BE.ZinkgruvaniteBa4Mn2+4Fe3+2(Si2O7)2(SO4)2O2(OH)2Tric. 1 : P1
9.BE.MadeiraiteNa2Ca2Fe2Zr2(Si2O7)2O2F2Mon. 2/m : P21/b
9.BE.BortolaniteCa2(Ca1.5Zr0.5)Na(NaCa)Ti(Si2O7)2(OF)F2Tric. 1 : P1
9.BE.Nacareniobsite-(Y)Na3Ca3YNb(Si2O7)2OF3Mon. 2/m : P21/b
9.BE.PilanesbergiteNa2Ca2Fe2Ti2(Si2O7)2O2F2Mon. 2/m : P21/b
9.BE.AlfredcaspariteSr2TiO(Si2O7)Tet. 4mm : P4bm
9.BE.02WadsleyiteMg4O(Si2O7)Orth. mmm (2/m 2/m 2/m) : Imma
9.BE.05HennomartiniteSrMn3+2(Si2O7)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
9.BE.05LawsoniteCaAl2(Si2O7)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
9.BE.05NoelbensoniteBaMn3+2(Si2O7)(OH)2 · H2OOrth. mm2
9.BE.05ItoigawaiteSrAl2(Si2O7)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
9.BE.05CortesognoiteCaV2(Si2O7)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
9.BE.07IlvaiteCaFe3+Fe2+2(Si2O7)O(OH)Orth. mmm (2/m 2/m 2/m)
9.BE.07ManganilvaiteCaFe2+Fe3+Mn2+(Si2O7)O(OH)Mon. 2/m : P21/b
9.BE.07Amamoorite CaMn2+2Mn3+(Si2O7)O(OH)Mon. 2/m : P21/b
9.BE.10SuoluniteCa2(H2Si2O7) · H2OOrth. mm2 : Fdd2
9.BE.12JaffeiteCa6(Si2O7)(OH)6Trig. 3 : P3
9.BE.15FresnoiteBa2Ti(Si2O7)OTet. 4mm : P4bm
9.BE.17BaghdaditeCa6Zr2(Si2O7)2O4Mon. 2/m : P21/b
9.BE.17BurpaliteNa2CaZr(Si2O7)F2Mon. 2/m : P21/b
9.BE.17CuspidineCa8(Si2O7)2F4Mon. 2/m : P21/b
9.BE.17HiortdahliteNa2Ca4(Ca0.5Zr0.5)Zr(Si2O7)2OF3Tric. 1 : P1
9.BE.17Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2Mon. 2/m : P21/m
9.BE.17LĂ„veniteNa2Ca2Mn2Zr2(Si2O7)2O2F2Mon. 2/m : P21/b
9.BE.17Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2Mon. m
9.BE.17NormanditeNaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OFMon. 2/m : P21/b
9.BE.17WöhleriteNa2Ca4ZrNb(Si2O7)2O3FMon. 2 : P21
9.BE.20Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.5◻0.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
9.BE.20Nacareniobsite-(Ce)Na3Ca3(Ce,REE)Nb(Si2O7)2OF3Mon. 2/m : P21/b
9.BE.20Roumaite(Ca,Na,REE,◻)7(Nb,Ti)[Si2O7]2OF3Mon. m : Bb
9.BE.20Rinkite-(Y)Na2Ca4YTi(Si2O7)2OF3Mon. 2/m : P21/b
9.BE.22GötzeniteNaCa6Ti(Si2O7)2OF3Tric. 1 : P1
9.BE.22Hainite-(Y)Na2Ca4(Y,REE)Ti(Si2O7)2OF3Tric. 1 : P1
9.BE.22RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
9.BE.22KochiteNa3Ca2MnZrTi(Si2O7)2OF3Tric. 1 : P1
9.BE.22Fogoite-(Y)Na3Ca2Y2Ti(Si2O7)2OF3Tric. 1 : P1
9.BE.23DovyreniteCa6Zr(Si2O7)2(OH)4Orth. mmm (2/m 2/m 2/m) : Pnnm
9.BE.25Barytolamprophyllite(Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F)Mon.
9.BE.25EricssoniteBaMn2+2Fe3+(Si2O7)O(OH)Mon. 2/m : B2/m
9.BE.25Lamprophyllite(Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2Mon. 2/m
9.BE.25Ericssonite-2OBaMn2+2Fe3+(Si2O7)O(OH)Orth.
9.BE.25SeidozeriteNa4MnZr2Ti(Si2O7)2O2F2Mon. 2/m : P2/b
9.BE.25Nabalamprophyllite(BaNa)Ti2Na3Ti(Si2O7)2O2(OH)2Mon. 2/m : P2/m
9.BE.25GrenmariteNa4MnZr3(Si2O7)2O2F2Mon. 2/m : P2/b
9.BE.25SchĂŒlleriteBa2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4Tric. 1 : P1
9.BE.25KazanskyiteBaNa3Ti2Nb(Si2O7)2O2(OH)2(H2O)4Tric. 1 : P1
9.BE.25LileyiteBa2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2Mon. 2/m : B2/m
9.BE.25EmmerichiteBa2Na(Na,Fe2+)2(Fe3+,Mg)Ti2(Si2O7)2O2F2Mon. 2/m : B2/m
9.BE.25SaamiteBa◻Na3Ti2Nb(Si2O7)2O2(OH)F(H2O)2Tric. 1 : P1
9.BE.25FluorlamprophylliteNa3(SrNa)Ti3(Si2O7)2O2F2Mon. 2/m : B2/m
9.BE.25Fluorbarytolamprophyllite(Ba,Sr)2[(Na,Fe2+)3(Ti,Mg)F2][Ti2(Si2O7)2O2]Mon. 2/m : B2/m
9.BE.27MurmaniteNa2Ti2(Si2O7)O2 · 2H2OTric. 1 : P1
9.BE.27VigrishiniteNaZnTi4(Si2O7)2O3(OH)(H2O)4Tric. 1 : P1
9.BE.27KolskyiteCaNa2Ti4(Si2O7)2O4(H2O)7Tric. 1 : P1
9.BE.27SelivanovaiteNaFe3+Ti4(Si2O7)2O4(H2O)4Tric. 1 : P1
9.BE.30Epistolite(Na◻)Nb2Na3Ti(Si2O7)2O2(OH)2(H2O)4Tric. 1 : P1
9.BE.32LomonosoviteNa5Ti2(Si2O7)(PO4)O2Tric. 1 : P1
9.BE.35VuonnemiteNa11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)Tric.
9.BE.37SoboleviteNa13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3Mon. m : Pb
9.BE.40Innelite Ba4Ti2Na(NaMn2+)Ti(Si2O7)2[(SO4)(PO4)]O2[O(OH)]Tric. 1 : P1
9.BE.40PhosphoinneliteNa3Ba4Ti3(Si2O7)2(PO4,SO4)2O2FTric.
9.BE.42YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)Tric. 1 : P1
9.BE.45QuadruphiteNa6Na2(CaNa)2Na2Ti2Na2Ti2(Si2O7)2(PO4)4O4F2Tric. 1 : P1
9.BE.47PolyphiteNa5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2Tric. 1 : P1
9.BE.50BornemaniteNa6BaTi2Nb(Si2O7)2(PO4)O2(OH)F Tric. 1 : P1
9.BE.50Shkatulkalite Na2Nb2Na3Ti(Si2O7)2O2(FO)(H2O)4(H2O)3Tric. 1 : P1
9.BE.55BafertisiteBa2Fe2+4Ti2(Si2O7)2O2(OH)2F2Tric.
9.BE.55HejtmaniteBa2Mn2+4Ti2(Si2O7)2O2(OH)2F2Tric. 1
9.BE.55Bykovaite(Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2OMon. 2/m
9.BE.55Nechelyustovite(Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2OMon. 2/m : B2/m
9.BE.60Delindeite(Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2OMon. 2/m : B2/m
9.BE.62Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22Orth.
9.BE.62 vaStrontium Perrierite(Ce,Sr,La,Ca)4Fe2+(Ti,Zr,Fe)2Ti2(Si2O7)2O8
9.BE.62Chevkinite-(Nd)(Nd,REE)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8 ?
9.BE.62Perrierite-(Nd)Nd4MgFe3+2Ti2(Si2O7)2O8 ?
9.BE.65BusseniteNa2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3FTric. 1 : P1
9.BE.67JinshajiangiteBaNaFe2+4Ti2(Si2O7)2O2(OH)2FTric. 1 : P1
9.BE.67PerraultiteBaNaMn2+4Ti2(Si2O7)2O2(OH)2FTric. 1
9.BE.70Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2OAmor.
9.BE.70Perrierite-(Ce)Ce4MgFe3+2Ti2(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70Strontiochevkinite(Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2Mon. 2/m : P21/b
9.BE.70Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8Mon. 2/m : B2/m
9.BE.70RengeiteSr4ZrTi4(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70MatsubaraiteSr4Ti5(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70Dingdaohengite-(Ce)(Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8Mon. 2/m : P21/b
9.BE.70Maoniupingite-(Ce)(Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8Mon. 2/m : B2/m
9.BE.70Perrierite-(La)(La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4[(Si2O7)O4]2Mon. 2/m : P21/b
9.BE.70UM2008-53-SiO:SrTiZrSr4ZrTi4(Si2O7)2O8Orth. mmm (2/m 2/m 2/m) : Pbca
9.BE.70Hezuolinite(Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8Mon. 2/m : B2/m
9.BE.72FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3Tric.
9.BE.75BelkoviteBa3(Nb,Ti)6(Si2O7)2O12Hex. 6 m2 : P62m
9.BE.77NasonitePb6Ca4(Si2O7)3Cl2Hex. 6/m : P63/m
9.BE.80MelanotekitePb2Fe3+2(Si2O7)O2Orth. 2 2 2 : C2 2 21
9.BE.82TilleyiteCa5(Si2O7)(CO3)2Mon. 2/m : P21/b
9.BE.82Alexkuznetsovite-(La)La2Mn(CO3)(Si2O7)Mon. 2/m : P21/b
9.BE.85KillalaiteCa6.4(H0.6Si2O7)2(OH)2Mon. 2/m : P21/m
9.BE.87Stavelotite-(La)(La,Nd,Ca)3Mn2+3Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30Trig. 3 : P31
9.BE.90Biraite-(Ce)Ce2Fe2+(Si2O7)(CO3)Mon. 2/m : P21/b
9.BE.90Magnesiorowlandite-(Y)Y4(Mg,Fe)(Si2O7)2F2Tric. 1 : P1
9.BE.92Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)Trig. 3m : R3m
9.BE.92Chirvinskyite(Na,Ca)13(Fe,Mn,◻)2(Ti,Zr)5(Si2O7)4(OH,O)12 · 2H2OTric. 1 : P1
9.BE.95BatisiviteBaV3+8Ti6(Si2O7)O22Tric. 1 : P1
9.BE.95RusinoviteCa10(Si2O7)3Cl2 Orth. mmm (2/m 2/m 2/m) : Cmcm
9.BE.97SchlĂŒterite-(Y)(Y,REE)2AlSi2O7(OH)2FMon. 2/m : P21/b

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 KentroliteHide

References for KentroliteHide

Localities for KentroliteHide

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.
Chile (TL)
 
France
 
  • Occitanie
    • Tarn
      • Castres
        • Montredon-LabessonniĂ©
          • Peyrebrune
Jordi Fabre specimens (more info available on fabreminerals.com forum) +1 other reference
Italy
 
  • Sardinia
    • Sassari Province
      • Ozieri
Olmi F. et al. (SS) +2 other references
  • Tuscany
    • Livorno Province
      • Rosignano Marittimo
Marco Bonifazi find & collection. +1 other reference
Kazakhstan
 
  • Ulytau Region
    • Karazhal
Frank Dzubeck +1 other reference
Frank Dzubeck
      • Zhayrem (Zhairem)
Frank Dzubeck +1 other reference
Mexico
 
  • Chihuahua
    • Chihuahua Municipality
      • Avalos
Espejel-Garcia et al. (2012, December)
Namibia
 
  • Otjozondjupa Region
    • Otavi Constituency
      • Kombat
Dunn (1991)
Norway
 
  • Viken
    • Lunner
      • Grua
        • Grua mining district
Raade (1982) +2 other references
South Africa
 
  • Northern Cape
    • John Taolo Gaetsewe District Municipality
      • Gamagara Local Municipality
Moore et al. (2011) +2 other references
      • Joe Morolong Local Municipality
Von Bezing (1991)
Sweden
 
  • Dalarna County
    • Avesta
      • FolkĂ€rna
Geijer (1939)
  • Örebro County
    • Lindesberg
      • Nyberget
Gatedal (2003)
Gatedal (2003)
  • VĂ€rmland County
    • Filipstad
      • LĂ„ngban Ore District
Holtstam et al. (1999)
Adolfsson (1979)
      • Nordmark mining district
        • Jakobsberg ore field
Knut Eldjarn Collection
Gatedal (n.d.)
      • Persberg ore district
        • Pajsberg
  • VĂ€stmanland County
    • Norberg
Ounchanum et al. (1987)
UK
 
  • England
    • Somerset
      • Mendip
        • Cranmore
Turner (2006) +2 other references
        • Nunney
Day (1999)
        • Priddy
Burr (1996)
USA
 
  • Arizona
    • Pinal County
      • Mineral Mountain Mining District
        • Reymert Canyon
Collected by
  • New Jersey
    • Sussex County
      • Franklin
Palache (1935) +2 other references
  • New Mexico
    • Sierra County
      • Hillsboro Mining District
        • Hillsboro
          • Percha Creek
NMBMMR New Mexico Mineral symposium (2001)
Min Rec 20:1 p59
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