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Tranquillityite

A valid IMA mineral species
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01323000014949045562918.jpg
Science experiments at Tranquility Base

Tranquillity Base, Mare Tranquillitatis, The Moon
Formula:
(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12
Colour:
gray, Dark red-brown
Specific Gravity:
4.7 (Calculated)
Crystal System:
Hexagonal
Name:
Named in 1971 by J. F. Lovering, D. A. Wark, A. F. Reid, N. G. Bunch, A. El Goresy, Paul Ramdohr, G. M. Brown, A. Peckett, R. Phillips, Eugene N. Cameron, J. A. V. Douglas, and A. G. Plant after its discovery locality at the Sea of Tranquility, the Moon.
Lunar rock samples brought back from the Moon by the Apollo 11 mission in 1969 were found to contain three minerals that had never been seen on Earth. Terrestrial occurrences for pyroxferroite and armalcolite were discovered in the next few years, but until 2011, tranquillityite was only known from returned moon rock samples and from lunar and martian meteorites. However, the mineral has now been discovered as an uncommon accessory phase in terrestrial mafic rocks, at six localities in Western Australia. [http://geology.gsapubs.org/content/40/1/83.abstract]


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Unique IdentifiersHide

Mindat ID:
4006
Long-form identifier:
mindat:1:1:4006:4
GUID
(UUID V4):
8f99ccc3-fae6-4ea4-b257-e83cc58fe9a0

IMA Classification of TranquillityiteHide

Classification of TranquillityiteHide

9.AG.90

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
78.7.16.1

78 : Unclassified Silicates
7 :
14.10.33

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf

Mineral SymbolsHide

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

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

Physical Properties of TranquillityiteHide

Transparency:
Translucent, Opaque
Colour:
gray, Dark red-brown
Density:
4.7(1) g/cm3 (Calculated)

Optical Data of TranquillityiteHide

Type:
Biaxial
RI values:
nα = 2.120(1)
2V:
Measured: 40°
Max Birefringence:
δ = 2.120
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Anisotropism:
weakly anisotropic
Dispersion:
r < v
Colour in reflected light:
grey
Pleochroism:
Non-pleochroic

Chemistry of TranquillityiteHide

Mindat Formula:
(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12
Common Impurities:
Hf,Al,Cr,Nb,Nd,Mn,Ca

Crystallography of TranquillityiteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 11.69(5) Å, c = 22.25(10) Å
Ratio:
a:c = 1 : 1.903
Unit Cell V:
2,633.24 ų (Calculated from Unit Cell)
Z:
3
Comment:
Point Group: n.d.; Space Group: n.d.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.23 Å(100)
1.781 Å(70)
2.155 Å(60)
4.04 Å(50)
3.34 Å(40)
3.18 Å(40)
3.13 Å(40)

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
Stage 3a: Earth’s earliest Hadean crust>4.50
8 : Mafic igneous rocks

Type Occurrence of TranquillityiteHide

General Appearance of Type Material:
thin laths and sheaves of laths
Place of Conservation of Type Material:
The Lunar Science Institute, Houston, Texas
Geological Setting of Type Material:
Lunar basalts
Associated Minerals at Type Locality:
Reference:
Lovering, J.F., Wark, D.A., Reid, A.F., Ware, N.G., Keil, K., Prinz, M., Bunch, T.E., El Goresy, A., Ramdohr, P., Brown, G.M., Peckett, A., Phillips, R., Cameron, E.N., Douglas, J.A.V., Plant, A.G. (1971) Tranquillityite: a new silicate mineral from Apollo 11 and Apollo 12 basaltic rocks. Proceedings of the Second Lunar Science Conference: 1: 39-45.

Synonyms of TranquillityiteHide

Other Language Names for TranquillityiteHide

Related Minerals - Strunz-mindat GroupingHide

9.AG.Ivanyukite-Na-TNa2Ti4(SiO4)3(OH)O3 · 7H2OTrig. 3m : R3m
9.AG.Ivanyukite-Na-CNa2Ti4(SiO4)3(OH)2O2 · 6H2OIso. 4 3m : P4 3m
9.AG.EdgrewiteCa9(SiO4)4F2 Mon. 2/m : P21/b
9.AG.Aluminotaipingite-(CeCa)(Ce6Ca3)◻Al(SiO4)3[SiO3(OH)]4F3Trig. 3m : R3c
9.AG.02GatedaliteZrMn2+2Mn3+4SiO12Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.2SkogbyiteZr(Mg2Mn3+4)SiO12Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05AbswurmbachiteCuMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.10LångbaniteMn2+4Mn3+9Sb5+O16(SiO4)2Trig. 3m : P3m1
9.AG.12Taipingite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3[SiO3(OH)]4F3Trig. 3m : R3c
9.AG.15MalayaiteCaSn(SiO4)OMon. 2/m
9.AG.15TitaniteCaTi(SiO4)OMon. 2/m : P21/b
9.AG.15VanadomalayaiteCaV4+(SiO4)OMon. 2/m : B2/b
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)OMon. 2/m : B2/b
9.AG.15ŻabińskiiteCa[Al0.5(Ta,Nb)0.5)](SiO4)OTric. 1
9.AG.20Cerite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3Trig. 3m : R3c
9.AG.20Ferricerite-(LaCa)(La6Ca3)◻Fe3+(SiO4)3(SiO3OH)4(OH)3Trig. 3m : R3c
9.AG.20Aluminocerite-(CeCa)(Ce6Ca3)◻Al(SiO4)3[SiO3(OH)]4(OH)3Trig. 3m : R3c
9.AG.20Nipeiite-(Ce)Ce9Fe3+(SiO4)6[SiO3(OH)](OH)3Trig. 3m : R3c
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5Mon. 2/m : P21/b
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.25Mieite-(Y)Y4Ti(SiO4)2O[F,(OH)]6Orth. mmm (2/m 2/m 2/m) : Cmcm
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2OTet. 4/mmm (4/m 2/m 2/m) : P42/mcm
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
9.AG.40aNatisiteNa2Ti(SiO4)OTet. 4/mmm (4/m 2/m 2/m)
9.AG.40bParanatisiteNa2Ti(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pmma
9.AG.45Törnebohmite-(Ce)Ce2Al(SiO4)2(OH)Mon. 2/m : P21/b
9.AG.45Törnebohmite-(La)La2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5Tric. 1 : P1
9.AG.50Ivanyukite-NaNa2Ti4(SiO4)3(OH)2O2 · 6H2OTrig. 3m : R3m
9.AG.50Ivanyukite-KK2Ti4(SiO4)3(OH)2O2 · 9H2OIso. 4 3m : P4 3m
9.AG.50Ivanyukite-CuCuTi4(SiO4)3(OH)2O2 · 7H2OIso. 4 3m : P4 3m
9.AG.50HydroxyledgrewiteCa9(SiO4)4(OH)2 Mon. 2/m : P21/b
9.AG.52Ulfanderssonite-(Ce)(Ce15Ca)Σ16Mg2(SiO4)10(SiO3OH)(OH,F)5Cl3Mon. m : Bm
9.AG.55ChantaliteCaAl2(SiO4)(OH)4Tet. 4/m : I41/a
9.AG.60MozartiteCaMn3+(SiO4)(OH)Orth. 2 2 2 : P21 21 21
9.AG.60VuagnatiteCaAl(SiO4)(OH)Orth. 2 2 2 : P21 21 21
9.AG.65HatruriteCa3(SiO4)OTrig.
9.AG.70JasmunditeCa11(SiO4)4O2STet. 4 2m : I4m2
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2OMon. m : Bb
9.AG.80BultfonteiniteCa2(HSiO4)F · H2OTric. 1 : P1
9.AG.85ZoltaiiteBaV4+2V3+12(SiO4)2O19Trig. 3 : P3

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 TranquillityiteHide

References for TranquillityiteHide

Localities for TranquillityiteHide

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
Semenova et al. (1992, March)
Australia
 
  • Tasmania
    • Kingborough municipality
      • Snug
Melluso et al. (2014)
  • Western Australia
    • Ashburton Shire
      • Barradale
Rasmussen et. al +3 other references
    • East Pilbara Shire
Rasmussen et. al +3 other references
Rasmussen et. al +4 other references
      • Yarrie Station
geology.gsapubs.org (n.d.)
Rasmussen et. al +3 other references
Rasmussen et. al +3 other references
India
 
  • Bihar
    • Gaya District
Abstracts Volume +1 other reference
Northwest Africa Meteorites
 
Srinivasan et al. (2018)
Lindner et al. (2022)
Leroux et al. (2006)
Oman
 
  • Dhofar Governorate
Taylor et al. (2001)
Meteoritical Bulletin No. 86
The Meteoritical Bulletin et al. (2004)
The Moon
 
  • Fra Mauro Highlands
El Goresy et al. (1971)
  • Mare Tranquillitatis (Sea of Tranquility)
Lovering J F et al. (1971)
  • Oceanus Procellarum (Ocean of Storms)
Lovering J F et al. (1971)
Tian et al. (2021)
  • Taurus-Littrow Valley
Meyer et al. (1974)
 
矿物 and/or 产地  
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