Calciohilairite Mineral Data

General Calciohilairite Information

Chemical Formula:

CaZrSi3O9•3(H2O)

Composition:

Molecular Weight = 413.60 gm

Calcium 9.69 % Ca 13.56 % CaO

Zirconium 22.06 % Zr 29.79 % ZrO₂

Silicon 20.37 % Si 43.58 % SiO₂

Hydrogen 1.46 % H 13.07 % H₂O

Oxygen 46.42 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaZrSi₃O₉•3(H₂O)

Environment:

In miarolitic cavities in a perialkalic alaskitic border granite of batholith.

IMA Status:

Approved IMA 1988

Locality:

From Washington Pass, on Liberty Bell Mountain, Okanogan Co., Washington, USA. Link to MinDat.org Location Data.

Name Origin:

For the "calcium" content and relation to "hilairite."

Name Pronunciation:

Calciohilairite + Pronunciation

Calciohilairite Image

Images:

Calciohilairite Kuzmenkoite-Mn

Comments: White rhombododecahedral crystals of calciohilairite associated with orange=brown stout prismatic kuzmenkoite-Mn on matrix.
Location: Flora Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: FOV ~1x1 cm.
© Pavel M. Kartashov

Calciohilairite Crystallography

Axial Ratios:

a:c = 1:0.76674

Cell Dimensions:

a = 20.87, c = 16.002, Z = 24; V = 6,036.01 Den(Calc)= 2.73

Crystal System:

Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: R 32

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

By Intensity(I/I_o): 5.23(1), 3.02(0.34), 1.817(0.31),

Physical Properties of Calciohilairite

Cleavage:

None

Color:

Blue white, White.

Density:

2.68

Diaphaneity:

Translucent

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Calciohilairite

Gladstone-Dale:

CI meas= -0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2273,KPDmeas= 0.2315,KC= 0.2264
Ncalc = 1.61 - 1.62

Optical Data:

Uniaxial (-), e=1.619, w=1.622, bire=0.0030.

Calculated Properties of Calciohilairite

Electron Density:

Bulk Density (Electron Density)=2.69 gm/cc
note: Specific Gravity of Calciohilairite =2.73 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_{Calciohilairite}= 30.77 barns/electron
U=PE_{Calciohilairite} x rElectron Density= 82.88 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Calciohilairite is Not Radioactive

Calciohilairite Classification

Dana Class:

59.02.03.02 (59)Cyclosilicate Three-Membered Rings

(59.02)hydrated

(59.02.03)Hilairite group

59.02.03.01 Hilairite Na2ZrSi3O9•3(H2O) R 3m 3 2/m

59.02.03.02 Calciohilairite CaZrSi3O9•3(H2O) R 32 3 2

59.02.03.03 Sazykinaite-(Y) Na5YZrSi6018•6(H2O) R 32 3 2

59.02.03.04 Pyatenkoite-(Y)! Na5(Y,Dy,Gd)TiSi6O18•6(H2O) R 32 3 2

Strunz Class:

09.DM.10 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DM -Inosilicates with 6-periodic single chains

09.DM.10 Calciohilairite CaZrSi3O9•3(H2O) R 32 3 2

09.DM.10 Hilairite Na2ZrSi3O9•3(H2O) R 3m 3 2/m

09.DM.10 Komkovite BaZrSi3O9•3(H2O) R 32 3 2

09.DM.10 Pyatenkoite-(Y)! Na5(Y,Dy,Gd)TiSi6O18•6(H2O) R 32 3 2

09.DM.10 Sazykinaite-(Y) Na5YZrSi6018•6(H2O) R 32 3 2

Other Calciohilairite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.73,p1191-1194,1988) OPTIC PROP.(Am.Min.,Vol.73,p1191-1194,1988)

See Also:

Links to other databases for Calciohilairite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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Calciohilairite

CaZrSi3O9•3(H2O)
Dana No: 59.02.03.02 Strunz No: 09.DM.10
Locality:

Notes:

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