Mackelveyite-(Y) Mineral Data

General Mackelveyite-(Y) Information

Chemical Formula:

NaBa3CaY(CO3)3(OH)6•3H2O

Composition:

Molecular Weight = 900.07 gm

Barium 45.77 % Ba 51.10 % BaO

Sodium 2.55 % Na 3.44 % Na₂O

Calcium 4.45 % Ca 6.23 % CaO

Yttrium 9.88 % Y 12.54 % Y₂O₃

Hydrogen 1.34 % H 12.01 % H₂O

Carbon 4.00 % C 14.67 % CO₂

Oxygen 32.00 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaBa₃CaY(CO₃)₃(OH)₆•3(H₂O)

Environment:

Donnayite group. Withdrawn because it is a monoclinic polytype of mackelveyite-(Y).

IMA Status:

Withdrawn IMA 2007, Proposed IMA 2005

Locality:

Fabi quarry, near Lanzada, Valmalenco, Sondrio, Lombardy, Italy Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals, Nomenclature and Classification (CNMNC)

Synonym:

IMA2005-012a

Mckelveyite-(Y)

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Mackelveyite-(Y) Crystallography

Axial Ratios:

a:b:c =0.9994:1:1.5064

Cell Dimensions:

a = 9.1526, b = 9.1574, c = 13.7953, Z = 2; alpha = 109.43°, beta = 109.33°, gamma = 60° V = 891.07 Den(Calc)= 3.35

Crystal System:

Triclinic - PedialH-M Symbol (1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.114(1), 4.312(0.48), 6.394(0.36),2.614(0.35), 2.032(0.29), 3.187(0.28), 2.013(0.27), 2.641(0.27),

Optical Properties of Mackelveyite-(Y)

Optical Data:

NCalc= 1.58 - from Gladstone-Dale relationship (KC = 0.1781) where Ncalc=Dcalc*KC+1

Calculated Properties of Mackelveyite-(Y)

Electron Density:

Bulk Density (Electron Density)=2.96 gm/cc
note: Specific Gravity of Mackelveyite-(Y) =3.23 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_{Mackelveyite-(Y)}= 213.80 barns/electron
U=PE_{Mackelveyite-(Y)} x rElectron Density= 632.21 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mackelveyite-(Y) is Not Radioactive

Mackelveyite-(Y) Classification

Dana Class:

13.00.00.00 (13)Carbonate Minerals

(13.00)Without Dana Classification Numbers

(13.00.00)Carbonate, Basic Hydrated

13.00.00.00 Aldzhanite* CaMgB2O4Cl•7(H2O)(?) Unk Ortho

13.00.00.00 Alfredstelznerite Ca4(H2O)4[B4O4(OH)6]4{H2O}15 P ca2₁ mm2

13.00.00.00 Balavinskite? Sr2B6O11•4(H2O) Mono ? Mono

13.00.00.00 IMA2008-069 Na3Y(CO3)3•6H2O P 6₃ 6

13.00.00.00 Mackelveyite-(Y) NaBa3CaY(CO3)3(OH)6•3H2O P1 1

Strunz Class:

05.XX.00 05 - CARBONATES (NITRATES)

05.X - Unclassified Strunz CARBONATES (NITRATES)

05.XX -Carbonate, Basic Hydrated

05.XX.00 Mackelveyite-(Y) NaBa3CaY(CO3)3(OH)6•3H2O P1 1

05.XX.00 IMA2009-013 NaCe2(CO3)2[(CO3)1-xF2x]F P 6 m2 6 m2

Other Mackelveyite-(Y) Information

See Also:

Links to other databases for Mackelveyite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Mackelveyite-(Y) Specimen Label here :

Mackelveyite-(Y)

NaBa3CaY(CO3)3(OH)6•3H2O
Dana No: 13.00.00.00 Strunz No: 05.XX.00
Locality:

Notes: