Mineralogy Database

Moydite-(Y) Mineral Data

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General Moydite-(Y) Information

Help on Chemical  Formula: Chemical Formula: YB(OH)4(CO3)
Help on Composition: Composition: Molecular Weight = 227.75 gm
   Yttrium   39.04 %  Y    49.57 % Y2O3
   Boron      4.75 %  B    15.28 % B2O3
   Hydrogen   1.77 %  H    15.82 % H2O
   Carbon     5.27 %  C    19.32 % CO2
   Oxygen    49.17 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: YB(OH)4(CO3)
Help on Environment: Environment: Secondary mineral in quartz in a zoned granite pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Evans-Lou quarry, near Wakefield Lake, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Louis Moyd (1916- ), Canadian mineralogist, Emeritus Curator, National Museum of Natural Sciences, Ottawa, Canada.
Help on Name Pronunciation: Name Pronunciation: Moydite-(Y) Say MOYDITE-(Y)
Help on Synonym: Synonym: ICSD 63262
  PDF 40-508

Moydite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7429:1:0.729
Help on Cell Dimensions: Cell Dimensions: a = 9.08, b = 12.222, c = 8.911, Z = 8; V = 988.91 Den(Calc)= 3.06
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P bca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.11(1), 4.5(0.9), 3.179(0.7),

Physical Properties of Moydite-(Y)

Help on Cleavage: Cleavage: {010} Good, {101} Indistinct
Help on Color: Color: Yellow.
Help on Density: Density: 3.13
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Moydite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2134,KPDmeas= 0.2086,KC= 0.2117
Ncalc = 1.65 - 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.588, b=1.681, g=1.69, bire=0.1020, 2V(Calc)=32, 2V(Meas)=32.

Calculated Properties of Moydite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.96 gm/cc
note: Specific Gravity of Moydite-(Y) =3.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEMoydite-(Y) = 47.60 barns/electron
U=PEMoydite-(Y) x rElectron Density= 140.71 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Moydite-(Y) is Not Radioactive

Moydite-(Y) Classification

Help on  Dana Class: Dana Class: (27)Compound Borates
  (27.01)Dana Type
  (27.01.09)Dana Group Moydite-(Y) YB(OH)4(CO3) P bca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 06.AC.45 06 - BORATES
  06.A - Monoborates
  06.AC -B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc.
06.AC.45 Moydite-(Y) YB(OH)4(CO3) P bca 2/m 2/m 2/m

Other Moydite-(Y) Information

Help on References: References: NAME( AntBidBlaNic5) 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 Moydite-(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: 06.AC.45





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