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Chladniite

A valid IMA mineral species
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01450880017073437669744.jpg
Ernst Florens Friedrich Chladni
Formula:
Na3CaMg11(PO4)9
Formerly given, i.a., as {Ca}{Na8}{Ca4Na4}{(Mg,Fe2+)43}(PO4)36; the above given IMA formula is wrong.
May contain Y (see chladniite).
Colour:
Colorless
Lustre:
Sub-Vitreous, Resinous
Hardness:
4½ - 5
Specific Gravity:
3.017 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
Named in honour of Ernst Florens Friedrich Chladni (30 November 1756, Wittenberg, Electorate of Saxony - 3 April 1827, Breslau, Prussia), physicist at the University of Riga, Latvia. He has been referred to as the "father" of meteoritics, for theorizing the origin of meteorites. He is also called the father of acoustics.
The Mg analogue of fillowite and johnsomervilleite.

Chemically close minerals (also anhydrous) include czochralskiite, brianite, and merrillite - all known from meteorites.

Originally found as a single grain (975 x 175 micrometers) with chlorapatite, olivine, pyroxene, plagioclase, schreibersite, and troilite.

Just recently a terrestrial occurrence evidence was reported by Rius (2016). It is of pegmatitic origin and was determined using a relatively new technique: through-the-substrate microdiffraction (tts-μXRD). This terrestrial chladniite is different from the meteoritic one in cation (Mg, Fe+Mn & Ca) ordering, and is said to have the M(1) site dominated by Mn (the question thus arises if this is still chladniite).


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Unique IdentifiersHide

Mindat ID:
1008
Long-form identifier:
mindat:1:1:1008:1
GUID
(UUID V4):
b582cd8d-d459-4c5c-a149-9f505139304a

IMA Classification of ChladniiteHide

Approved
Approval year:
1993
First published:
1994
Approval history:

Classification of ChladniiteHide

8.AC.50

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
Dana 7th ed.:
38.2.9.3
38.2.5.3

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
2 : (AB)5(XO4)3

Mineral SymbolsHide

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

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

Physical Properties of ChladniiteHide

Sub-Vitreous, Resinous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
4½ - 5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
Rhombohedral
Fracture:
Irregular/Uneven
Density:
3.017(2) g/cm3 (Calculated)

Optical Data of ChladniiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.600 nε = 1.620
Birefringence:
0.02
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Anisotropism:
weak
Colour in reflected light:
Gray
Internal Reflections:
orange-brown
Pleochroism:
Non-pleochroic
Comments:
Weakly anisotropic

Chemistry of ChladniiteHide

Mindat Formula:
Na3CaMg11(PO4)9

Formerly given, i.a., as {Ca}{Na8}{Ca4Na4}{(Mg,Fe2+)43}(PO4)36; the above given IMA formula is wrong.
May contain Y (see chladniite).
Common Impurities:
Fe,Mn,Si

Chemical AnalysisHide

Empirical formulas:
Sample IDEmpirical Formula
1M13(Na0.560.44)M212(Na0.81Ca0.19)M312(Na0.970.03)M126(Ca0.64Na0.36)M16MnM2(Mg0.54Ca0.46)M3-9Mg30M10(Mg0.94Ca0.06)M116Mg6(P33.53As2.47)O144

Crystallography of ChladniiteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Setting:
R3
Cell Parameters:
a = 14.967(2) Å, c = 42.595(4) Å
Ratio:
a:c = 1 : 2.846
Unit Cell V:
8,263.40 ų (Calculated from Unit Cell)
Z:
18
Morphology:
Rims around other phosphates and silicates.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0004225Stornesite-(Y)Grew E S, Armbruster T, Medenbach O, Yates M G, Carson C J (2006) Stornesite-(Y), (Y, Ca)Vacancy2Na6(Ca,Na)8(Mg,Fe)43(PO4)36, the first terrestrial Mg-dominant member of the fillowite group, from granulite-facies paragneiss in the Larsemann Hills, Prydz Bay, East Antarctica American Mineralogist 91 1412-14242006Larsemann Hills, Prydz Bay, East Antarctica0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.69 Å(strong)
3.56 Å(medium)
3.08 Å(weak)
2.96 Å(strong)
2.50 Å(medium)
2.75 Å(strong)
2.13 Å(medium)
1.851 Å(medium)
Comments:
American Mineralogist 79:375 (1994)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration4.566-4.550
5 : Primary asteroid phases4.566–4.560
6 : Secondary asteroid phases4.566-4.560
Geological Setting:
Iron and primitive achondrite meteorites

Type Occurrence of ChladniiteHide

General Appearance of Type Material:
A single grain, which measures 175 x 975 µm.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, number 2707.
Geological Setting of Type Material:
In type IIICD iron meteorite and primitive achondrite meteorite.
Associated Minerals at Type Locality:

Synonyms of ChladniiteHide

Other Language Names for ChladniiteHide

German:Chladniit
Spanish:Chladniita

Varieties of ChladniiteHide

Stornesite-(Y)An Y-bearing chladniite. Originally described as a new mineral, the Y-dominant analogue of Chladniite by Grew et al. (2006).

Discredited by the IMA in February 2020 (IMA Newsletter 54).

Relationship of Chladniite to other SpeciesHide

Member of:
Other Members of this group:
FillowiteNa3CaMn2+11(PO4)9Trig. 3 : R3
GalileiiteNa3Fe2+Fe2+11(PO4)9Trig. 3 : R3
JohnsomervilleiteNa3CaFe11(PO4)9Trig. 3 : R3

Related Minerals - Strunz-mindat GroupingHide

8.AC.AngarfiteNaFe3+5(PO4)4(OH)4 · 4H2O Orth. 2 2 2 : C2 2 21
8.AC.WopmayiteCa6Na3◻Mn(PO4)3(PO3OH)4 Trig. 3m : R3c
8.AC.XDyrnaesite-(La)Na8Ce4+(La,REE)2(PO4)6Orth. mmm (2/m 2/m 2/m) : Pnma
8.AC.EdtolliteK2NaCu5Fe3+O2(AsO4)4Tric. 1 : P1
8.AC.AlumoedtolliteK2NaCu5AlO2(AsO4)4Tric. 1 : P1
8.AC.CrocobeloniteCaFe3+2O(PO4)2Orth. mmm (2/m 2/m 2/m) : Pnma
8.AC.ManganobadaloviteNaNaMn(MgFe3+)(AsO4)3Mon. 2/m : B2/b
8.AC.BeershevaiteCaFe3+3(PO4)3OMon. 2/m : P21/m
8.AC.CalciohatertiteNaNaCa(CaFe3+)(AsO4)3Mon. 2/m : B2/b
8.AC.KabaloviteFe2+3Fe3+4(PO4)6Tric. 1 : P1
8.AC.Nazarchukite Ca2NiFe3+2(PO4)4Orth. mmm (2/m 2/m 2/m) : Pbca
8.AC.Changesite–(Y)(Ca8Y)◻Fe2+(PO4)7Trig. 3m : R3c
8.AC.Crocobelonite-1MCaFe3+2O(PO4)2Mon. 2/m : P21/m
8.AC.Ebnerite(NH4)Zn(PO4)Hex. 6 : P63
8.AC.MagnesioqingheiiteNa2Mg(MgAl)(PO4)3Mon. 2/m
8.AC.Epiebnerite(NH4)Zn(PO4)Mon. 2 : P21
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.05CalciojohilleriteNaCaMg3(AsO4)3Mon. 2/m : B2/b
8.AC.05HowardevansiteNaCuFe2(VO4)3Tric. 1 : P1
8.AC.05O'DanieliteNa(Zn,Mg)3(AsO4)(AsO3OH)2Mon. 2/m : B2/b
8.AC.05 vaAlluaudite-Na□4Na4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
8.AC.05 vaAlluaudite-Ca□4Ca4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
8.AC.05 vaFerroalluaudite-NaNaNa4Na4Fe2+4Fe3+8(PO4)12Mon. 2/m : B2/m
8.AC.05Hagendorfite-NaNaNaNaFe2+(Mn2+,Mn3+)(PO4)3 (?)Mon. 2/m : B2/b
8.AC.05ErikapohliteCu3(Zn,Cu,Mg)4Ca2(AsO4)6 · 2H2O Mon. 2/m : B2/m
8.AC.05HatertiteNa2(Ca,Na)(Fe3+,Cu)2(AsO4)3Mon. 2/m : B2/b
8.AC.05Unnamed (Na-Mg Arsenate Hydroxyarsenate)NaMg3(AsO4)(AsO3OH)2Mon. 2/m : B2/b
8.AC.05Unnamed (Na-Zn-H Arsenate Hydrxyarsenate)Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2Mon. 2/m : B2/b
8.AC.05ZincobradaczekiteNaZn2Cu2(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.05Magnesiohatertite(Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3Mon. 2/m : B2/b
8.AC.05KhrenoviteNa3Fe3+2(AsO4)3Mon. 2/m : B2/b
8.AC.05ParaberzeliiteNaCa2Mg2(AsO4)3Mon. 2/m : B2/b
8.AC.05CamanchacaiteNaCaMg2[AsO4][AsO3(OH)]2Mon. 2/m : B2/b
8.AC.05ManganohatertiteNaNaCa(MnFe3+)(AsO4)3Mon. 2/m : B2/b
8.AC.07ZhanghuifeniteNa3Mn4Mg2Al(PO4)6Mon. 2/m
8.AC.07FerrobobfergusoniteNa2Fe2+5Fe3+Al(PO4)6Mon.
8.AC.10Alluaudite(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3Mon. 2/m : B2/b
8.AC.10ArseniopleiteNaCaMnMn2(AsO4)3Mon. 2/m
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.10HagendorfiteNaCaMn2+Fe2+2(PO4)3Mon. 2/m : B2/b
8.AC.10JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
8.AC.10Maghagendorfite(Na,◻)MgMn2+(Fe2+,Fe3+)2(PO4)3Mon. 2/m
8.AC.10NickenichiteNa0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3Mon. 2/m : B2/b
8.AC.10VaruliteNaCaMn2+Mn2+2(PO4)3Mon. 2/m : B2/b
8.AC.10FerrohagendorfiteNaCaFe2+Fe2+2(PO4)3Mon.
8.AC.10BradaczekiteNaCu4(AsO4)3Mon. 2/m : B2/b
8.AC.10GroatiteNaCaMn2(PO4)[PO3(OH)]2Mon. 2/m : B2/b
8.AC.15BobfergusoniteNa2Mn5FeAl(PO4)6Mon. 2/m : P2/b
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.15Wyllieite(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3Mon. 2/m
8.AC.15Ferrorosemaryite◻NaFe2+Fe3+Al(PO4)3Mon. 2/m
8.AC.15FerroqingheiiteNaNaFe2+(MgAl)(PO4)3Mon. 2/m : P21/m
8.AC.17CzochralskiiteNa4Ca3Mg(PO4)4Orth. mmm (2/m 2/m 2/m) : Pnma
8.AC.18ManitobaiteNa16Mn2+ 25Al8(PO4)30Mon. m : Pb
8.AC.20MarićiteNaFe2+(PO4)Orth. mmm (2/m 2/m 2/m) : Pmna
8.AC.25Berzeliite(NaCa2)Mg2(AsO4)3Iso. m3m (4/m 3 2/m) : Ia3d
8.AC.25Manganberzeliite(NaCa2)Mn2+2(AsO4)3Iso. m3m (4/m 3 2/m) : Ia3d
8.AC.25Palenzonaite(NaCa2)Mn2+2(VO4)3Iso. m3m (4/m 3 2/m) : Ia3d
8.AC.25Schäferite(NaCa2)Mg2(VO4)3Iso. m3m (4/m 3 2/m) : Ia3d
8.AC.25Hedegaardite(Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH)Trig. 3m : R3c
8.AC.25MatyhiteCa18(Ca,◻)2Fe2+2(PO4)14Trig. 3m : R3c
8.AC.30BrianiteNa2CaMg(PO4)2Mon. 2/m : P21/b
8.AC.35Vitusite-(Ce)Na3(Ce,La,Nd)(PO4)2Orth. mm2 : Pca21
8.AC.40Olgite(Sr,Ba)(Na,Sr,REE)2Na(PO4)2Trig. 3m (3 2/m) : P3m1
8.AC.40Bario-olgite(Ba,Sr)(Na,Sr,REE)2Na(PO4)2 · Trig. 3 : P3
8.AC.45StrontiowhitlockiteSr9Mg(PO4)6(PO3OH)Trig. 3m : R3c
8.AC.45WhitlockiteCa9Mg(PO4)6(PO3OH)Trig. 3m : R3c
8.AC.45MerrilliteCa9NaMg(PO4)7Trig. 3m : R3m
8.AC.45TuiteCa3(PO4)2Trig. 3m (3 2/m) : R3m
8.AC.45FerromerrilliteCa9NaFe2+(PO4)7Trig. 3m : R3c
8.AC.47IwateiteNa2BaMn(PO4)2Trig. 3 : P3
8.AC.47YurmariniteNa7(Fe3+,Mg,Cu)4(AsO4)6Trig. 3m (3 2/m) : R3c
8.AC.47OzerovaiteNa2KAl3(AsO4)4Orth. mmm (2/m 2/m 2/m) : Cmca
8.AC.47AnatolyiteNa6(Ca,Na)(Mg,Fe3+)3Al(AsO4)6Trig. 3m (3 2/m) : R3c
8.AC.47PansneriteK3Na3(Fe3+,Al)6(AsO4)8Orth. mmm (2/m 2/m 2/m)
8.AC.50FillowiteNa3CaMn2+11(PO4)9Trig. 3 : R3
8.AC.50JohnsomervilleiteNa3CaFe11(PO4)9Trig. 3 : R3
8.AC.50GalileiiteNa3Fe2+Fe2+11(PO4)9Trig. 3 : R3
8.AC.50XenophylliteNa4Fe2+7(PO4)6Tric. 1 : P1
8.AC.50UdinaiteNaMg4(VO4)3Tet. 4 2m : I4 2d
8.AC.50ArsenudinaiteNaMg4(AsO4)3Tet. 4 2m : I4 2d
8.AC.52Lasnierite(Ca,Sr)(Mg,Fe2+)2Al(P[O,F]4)3Orth. mmm (2/m 2/m 2/m) : Pbcn
8.AC.55PharmazinciteKZnAsO4Hex. 6 : P63
8.AC.57ZubkovaiteCa3Cu3(AsO4)4Mon. 2 : B2
8.AC.60KosnariteKZr2(PO4)3Trig. 3m (3 2/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

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 ChladniiteHide

References for ChladniiteHide

Reference List:

Localities for ChladniiteHide

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.
Antarctica
 
  • Eastern Antarctica
    • Princess Elizabeth Land
      • Ingrid Christensen Coast
        • Prydz Bay
          • Larsemann Hills
[var: Stornesite-(Y)] Grew et al. (2006)
            • Stornes Peninsula
[var: Stornesite-(Y)] Grew et al. (2006) +1 other reference
    • Wisconsin Range
Floss (1999)
Floss (1999)
Argentina
 
Vallcorba et al. (2017)
    • Pocho Department
      • Parroquia District
Vallcorba O et al. (2016)
Russia
 
  • Kamchatka Krai
    • Milkovsky District
      • Tolbachik Volcanic field
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • Second scoria cone
Pekov et al. (2023)
  • Sakha
    • Oymyakonsky District
Litasov et al. (2017) +1 other reference
USA (TL)
 
  • Texas
    • Hamilton County
      • Carlton
McCoy et al. (1994)
 
Mineral and/or Locality  
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