Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Tranquillityite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O4
System:
Hexagonal
Colour:
Dark red-brown
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]

Classification of Tranquillityite

Approved 1971
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
mindat.org URL:
http://www.mindat.org/min-4006.html
Please feel free to link to this page.

Type Occurrence of Tranquillityite

Year of Discovery:
1971

Physical Properties of Tranquillityite

Diaphaneity (Transparency):
Opaque
Colour:
Dark red-brown

Crystallography of Tranquillityite

Crystal System:
Hexagonal
Cell Parameters:
a = 11.69Å, c = 22.25Å
Ratio:
a:c = 1 : 1.903
Unit Cell Volume:
V 2,633.24 ų (Calculated from Unit Cell)

Optical Data of Tranquillityite

Type:
Biaxial
RI values:
nα = 2.120
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
Dispersion:
r < v

Chemical Properties of Tranquillityite

Formula:
(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O4
Essential elements:
All elements listed in formula:
Common Impurities:
Hf,Al,Cr,Nb,Nd,Mn,Ca

Relationship of Tranquillityite to other Species

9.AG.05AbswurmbachiteCuMn63+(SiO4)O8
9.AG.05BrauniteMn2+Mn63+(SiO4)O8
9.AG.05NeltneriteCaMn63+(SiO4)O8
9.AG.05Braunite-IICaMn143+(SiO4)O20
9.AG.10Långbanite(Mn2+,Ca)4(Mn3+,Fe3+)9Sb5+(SiO4)2O16
9.AG.15MalayaiteCaSn(SiO4)O
9.AG.15TitaniteCaTi(SiO4)O
9.AG.15VanadomalayaiteCaV4+(SiO4)O
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)O
9.AG.20Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
9.AG.20Cerite-(La)(La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3(HSiO4)4(OH)3
9.AG.20Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2O
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2O
9.AG.40aNatisiteNa2Ti(SiO4)O
9.AG.40bParanatisiteNa2Ti(SiO4)O
9.AG.45Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
9.AG.45Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5
9.AG.55ChantaliteCaAl2(SiO4)(OH)4
9.AG.60MozartiteCaMn3+(SiO4)(OH)
9.AG.60VuagnatiteCaAl(SiO4)(OH)
9.AG.65HatruriteCa3(SiO4)O
9.AG.70JasmunditeCa11(SiO4)4O2S
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2O
9.AG.80BultfonteiniteCa2(HSiO4)F · H2O
9.AG.85ZoltaiiteBaV24+V123+(SiO4)2O19
14.10.1ZirconZrSiO4
14.10.2HafnonHfSiO4
14.10.3ZektzeriteLiNa(Zr,Ti,Hf)Si6O15
14.10.4ParakeldyshiteNa2ZrSi2O7
14.10.5VlasoviteNa2ZrSi4O11
14.10.6Keldyshite(Na,H)2ZrSi2O7
14.10.7GaidonnayiteNa2Zr(Si3O9) · 2H2O
14.10.8TerskiteNa4ZrSi6O16 · 2H2O
14.10.9ElpiditeNa2ZrSi6O15 · 3H2O
14.10.10HilairiteNa2Zr[SiO3]3 · 3H2O
14.10.11PetarasiteNa5Zr2(Si6O18)(Cl,OH) · 2H2O
14.10.12KhibinskiteK2ZrSi2O7
14.10.13WadeiteK2Zr(Si3O9)
14.10.14DalyiteK2ZrSi6O15
14.10.15KostyleviteK2Zr(Si3O9) · H2O
14.10.16UmbiteK2(Zr,Ti)Si3O9 · H2O
14.10.17ParaumbiteK3Zr2H(Si3O9)2 · nH2O
14.10.18GeorgechaoiteNaKZr[Si3O9] · 2H2O
14.10.19GittinsiteCaZrSi2O7
14.10.20CalciocatapleiiteCaZr(Si3O9) · 2H2O
14.10.21CalciohilairiteCaZr[SiO3]3 · 3H2O
14.10.22ArmstrongiteCaZr[Si6O15] · 3H2O
14.10.23Lemoynite(Na,K)2CaZr2Si10O26 · 5H2O
14.10.24CatapleiiteNa2Zr(Si3O9) · 2H2O
14.10.25BaghdaditeCa3(Zr,Ti)(Si2O7)O2
14.10.26LovozeriteNa2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2O
14.10.27Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2
14.10.28PenkvilksiteNa4Ti2Si8O22 · 4H2O
14.10.29DarapiositeKNa2(Zn,Li)3(Mn,Zr)2[Si12O30]
14.10.30BaziriteBaZr(Si3O9)
14.10.31KomkoviteBaZr[Si3O9] · 3H2O
14.10.32ZirsinaliteNa6(Ca,Mn2+,Fe2+)Zr(Si6O18)

Other Names for Tranquillityite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Tranquillityite

Reference List:
Proceedings of the 2nd Lunar Scientific Conference (1971): 1: 39-45.

American Mineralogist (1973): 58: 140-141.

Proceedings of the 8th. Lunar Scientific Conference (1977): 2: 1831.

Rasmussen, B. et al (2012) Tranquillityite: the last lunar mineral comes down to Earth. Geology, 40(1) 83-86.

Internet Links for Tranquillityite

Localities for Tranquillityite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • Western Australia
    • Derby-West Kimberley Shire
Rasmussen et. al, 2011, Tranquillityite: The last lunar mineral comes down to Earth, in Geology, January 2012; v. 40; no. 1; p. 83–86
    • East Pilbara Shire
Rasmussen et. al, 2011, Tranquillityite: The last lunar mineral comes down to Earth, in Geology, January 2012; v. 40; no. 1; p. 83–86.
Rasmussen et. al, 2011, Tranquillityite: The last lunar mineral comes down to Earth, in Geology, January 2012; v. 40; no. 1; p. 83–86.; Hickman, A.H. (1978) Nullagine, Western Australia: Geological Survey of Australia 1:250,000 Geological Series Explanatory Notes, 22p. Rasmussen, B., and Fletcher, I.R. (2004) Zirconolite, a new U-Pb geochronometer. Geology, 32, 785-788. doi:10.1130/G20658.1. Rasmussen, B. et al (2012) Tranquillityite: the last lunar mineral comes down to Earth. Geology, 40(1) 83-86.
      • Shaw River District
Rasmussen et. al, 2011, Tranquillityite: The last lunar mineral comes down to Earth, in Geology, January 2012; v. 40; no. 1; p. 83–86.
Rasmussen et. al, 2011, Tranquillityite: The last lunar mineral comes down to Earth, in Geology, January 2012; v. 40; no. 1; p. 83–86
      • Yarrie Station
http://geology.gsapubs.org/content/40/1/83.abstract
India
 
  • Bihar
    • Gaya District
U. Bläß, F. Langenhorst (2011): High-pressure phase transformation of SiO2 polymorphs to Seifertite. Joint Meeting of the DGK, DMG and ÖMG, Salzburg, Austria, September 20-24, 2011; Abstracts Volume, p. 46.
Oman
 
  • Dhofar Province (Al Janubiyah Province)
Taylor, L. A., Nazarov, M. A., Demidova, S. I., & Patchen, A. D. (2001). Dhofar 287: A new lunar mare basalt from Oman. Meteoritics and Planetary Science Supplement, 36, 204.
Meteoritical Bulletin No. 86
The Meteoritical Bulletin, No. 88, 2004 JULY, Meteoritics & Planetary Science 39, Axxx–Axxx (2004)
The Moon (TL)
 
Proc. 2nd Lunar Sci.Conf.(1971) 1, 39-45; Nikischer, Tony and Joe Orosz (2007) Lunar Mineral Found at Franklin, Sussex Co., New Jersey. Mineral News: 23(8): 1, 2, 9, 14.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: August 4, 2015 20:58:08 Page generated: July 31, 2015 16:10:09