Calcium-catapleiite Mineral Data

Calcium-catapleiite Mineral Data +

General Calcium-catapleiite Information

Chemical Formula:

(Ca,[ ])ZrSi3O9·2(H2O)

Composition:

Molecular Weight = 391.58 gm

Calcium 9.21 % Ca 12.89 % CaO

Zirconium 23.30 % Zr 31.47 % ZrO₂

Silicon 21.52 % Si 46.03 % SiO₂

Hydrogen 1.03 % H 9.20 % H₂O

Oxygen 44.94 % O

______ ______

100.00 % 99.59 % = TOTAL OXIDE

Empirical Formula:

Ca_0.9ZrSi₃O₉·2(H₂O)

IMA Status:

Approved IMA 1964

Locality:

Burpala massif, northern Baikal area, Siberia, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the composition and from the Greek for "wholly' and "full", because it is always accompanied by a number of rare minerals.

Synonym:

Catapleiite-Ca

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Calcium-catapleiite Crystallography

Axial Ratios:

a:b:c =0.5773:1:0.79

Cell Dimensions:

a = 7.378, b = 12.779, c = 10.096, Z = 4; V = 951.89 Den(Calc)= 2.73

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbnn

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

By Intensity(I/I_o): 2.96(1), 3.06(0.8), 3.96(0.8),

Physical Properties of Calcium-catapleiite

Color:

Light yellow, Reddish brown, Cream.

Density:

2.77

Diaphaniety:

Translucent to Opaque

Hardness:

4.5-5 - Near Apatite

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Calcium-catapleiite

Gladstone-Dale:

CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2275,KPDmeas= 0.2242,KC= 0.2205

Optical Data:

Uniaxial (+), w=1.603, e=1.639, bire=0.0360.

Calculated Properties of Calcium-catapleiite

Electron Density:

r_electron=2.72 gm/cc
note: r_{Calcium-catapleiite}=2.77 gm/cc.

Fermion Index

Fermion Index = 0.03652
Boson Index = 0.96348

Photoelectric:

PE_{Calcium-catapleiite}= 32.55 barns/electron
U=PE_{Calcium-catapleiite} x r_electron= 88.43 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Calcium-catapleiite is Not Radioactive

Calcium-catapleiite Classification

Dana Class:

59.2.2.2 (59)Cyclosilicate Three-Membered Rings

(59.2)hydrated

(59.2.2)Catapleiite group

59.2.2.1 Catapleiite (Na,Ca,[])2ZrSi3O9·2(H2O) B2/b (pseudo-HEX) 2/m

59.2.2.2 Calcium-catapleiite (Ca,[])ZrSi3O9·2(H2O) Pbnn 2/m 2/m 2/m

59.2.2.3 Gaidonnayite Na2ZrSi3O9·2(H2O) P 2₁nb mm2

59.2.2.4 Georgechaoite KNaZrSi3O9·2(H2O) P 2₁nb mm2

59.2.2.5 Loudounite NaCa5Zr4Si16O40(OH)11·8(H2O) Mono

59.2.2.6 Bobtraillite! Na15Sr12Zr14Si42B6O138(OH)6·12(H2O) P 6₃cm 6mm

Strunz Class:

VIII/EX.00-00 VIII - Silicates

VIII/EX - Unclassified Strunz Cyklosilicates

VIII/EX.00 - Catapleiite group

Other Calcium-catapleiite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990, CanMin, 42:1037) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Calcium-catapleiite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Calcium-catapleiite Specimen Label here :

Calcium-catapleiite

(Ca,[ ])ZrSi3O9·2(H2O)
Dana No: 59.2.2.2 Strunz No: VIII/EX.00-00
Locality:

Notes: