Mineralogy Database

Tengerite-(Y) Mineral Data

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General Tengerite-(Y) Information

Help on Chemical  Formula: Chemical Formula: Y2(CO3)3•2-3(H2O)
Help on Composition: Composition: Molecular Weight = 402.88 gm
   Yttrium   44.14 %  Y    56.05 % Y2O3
   Hydrogen   1.25 %  H    11.18 % H2O
   Carbon     8.94 %  C    32.77 % CO2
   Oxygen    45.67 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y2(CO3)3•2.5(H2O)
Help on Environment: Environment: Alteration product of gadolinite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1838
Help on Locality: Locality: Ytterby, northeast of Stockholm, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for C. Tenger, Swedish geologist.
Help on Name Pronunciation: Name Pronunciation: Tengerite-(Y) + Pronunciation Say TENGERITE-(Y)
Help on Synonym: Synonym: ICSD 72940
  PDF 47-1828

Tengerite-(Y) Image

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Comments: White microcrystalline tengerite-(Y) seams on matrix.
Location: Evans-Lou Quarry, Quebec, Canada. Scale: Specimen Size 2x3 cm.
© Diederik Visser

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Comments: Pearly white platy tengerite-(Y) crystals in radial sprays to 2mm and fine layers on matrix. Partially replaced by an unidentified green mineral with bright blue centers that is probable decrespignyite-(Y).
Location: Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia. Scale: Overall: 4.5 x 1 x 4 cm.
© Tom Loomis / Dakota Matrix

Tengerite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6637:1:1.6505
Help on Cell Dimensions: Cell Dimensions: a = 6.078, b = 9.157, c = 15.114, Z = 4; V = 841.19 Den(Calc)= 3.18
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pb21m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.58(1), 3.89(0.9), 7.53(0.9),

Physical Properties of Tengerite-(Y)

Help on Color: Color: White.
Help on Density: Density: 3.12
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Pulverulent - Forms a loose, poorly-coherent powdery mass.
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white

Optical Properties of Tengerite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.064 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.082 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1858,KPDmeas= 0.1894,KC= 0.2024
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (+), a=1.587, b=1.57, g=1.616, bire=0.0290

Calculated Properties of Tengerite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.99 gm/cc
note: Specific Gravity of Tengerite-(Y) =3.12 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012049212
Boson Index = 0.9987950788
Help on Photoelectric: Photoelectric: PETengerite-(Y) = 54.22 barns/electron
U=PETengerite-(Y) x rElectron Density= 162.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tengerite-(Y) is Not Radioactive

Tengerite-(Y) Classification

Help on  Dana Class: Dana Class: (15)Hydrated Carbonates
  (15.04)Dana Type
  (15.04.03)Dana Group Tengerite-(Y) Y2(CO3)3•2-3(H2O) Pb21m mm2
Help on  Strunz Class: Strunz Class: 05.CC.10 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CC -With rare-earth elements (REE)
05.CC.10 Tengerite-(Y) Y2(CO3)3•2-3(H2O) Pb21m mm2

Other Tengerite-(Y) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tengerite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 05.CC.10





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