Hilairite Mineral Data

Hilairite Mineral Data +

[What's New] [Mineral Galleries] [Sale Items] [About Us] [Contacts]
At AA Mineral Specimens, we source quality Mineral Specimens, Fossils, Gemstones,
Decorative Stones, Lapidary Material and Specimen Sets world-wide

General Hilairite Information

Chemical Formula:

Na2ZrSi3O9·3(H2O)

Composition:

Molecular Weight = 419.50 gm

Sodium 10.96 % Na 14.77 % Na₂O

Zirconium 21.75 % Zr 29.37 % ZrO₂

Silicon 20.08 % Si 42.97 % SiO₂

Hydrogen 1.44 % H 12.88 % H₂O

Oxygen 45.77 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₂ZrSi₃O₉·3(H₂O)

IMA Status:

Approved IMA 1974

Locality:

Link to MinDat.org Location Data.

Synonym:

IMA1972-019

Search for Hilairite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Hilairite Crystallography

Axial Ratios:

a:c = 1:1.50161

Cell Dimensions:

a = 10.556, c = 15.851, Z = 6; V = 1,529.63 Den(Calc)= 2.73

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 5.28(1), 6(0.6), 3.17(0.5),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 1 1 0] [ 0 1 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Ilyushin G D , Voronkov A A , Nevskii N N , Ilyukhin V V , Belov N V , Doklady Akademii Nauk SSSR , 260 (1981) p.1118-1120, Crystal structure of hilairite, Na2ZrSi3O9*3H2O

Physical Properties of Hilairite

Cleavage:

None

Color:

Light brown.

Density:

2.72

Diaphaniety:

Transparent

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Hilairite

Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2207,KPDmeas= 0.2215,KC= 0.2232

Optical Data:

Uniaxial (-), e=1.596, w=1.609, bire=0.0130.

Calculated Properties of Hilairite

Electron Density:

r_electron=2.67 gm/cc
note: r_Hilairite=2.72 gm/cc.

Fermion Index

Fermion Index = 0.034
Boson Index = 0.966

Photoelectric:

PE_Hilairite= 29.45 barns/electron
U=PE_Hilairite x r_electron= 78.68 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hilairite is Not Radioactive

Hilairite Classification

Dana Class:

59.2.3.1 (59)Cyclosilicate Three-Membered Rings

(59.2)hydrated

(59.2.3)Hilairite group

59.2.3.1 Hilairite Na2ZrSi3O9·3(H2O) R 3m 3 2/m

59.2.3.2 Calciohilairite CaZrSi3O9·3(H2O) R 32 3 2

59.2.3.3 Sazykinaite-(Y) Na5YZrSi6018·6(H2O) R 32 3 2

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

Strunz Class:

VIII/F.29-10 VIII - Silicates

VIII/F - Inosilicates (chain and band) Six chains [Si6O18]12- and six bands [Si12O30]12-

VIII/F.29 - Hilairite - Stokesite series

VIII/F.29-10 Hilairite Na2ZrSi3O9·3(H2O) R 3m 3 2/m

VIII/F.29-20 Calciohilairite CaZrSi3O9·3(H2O) R 32 3 2

VIII/F.29-24 Pyatenkoite-(Y)! Na5(Y,Dy,Gd)TiSi6O18·6(H2O) R 32 3 2

VIII/F.29-25 Sazykinaite-(Y) Na5YZrSi6018·6(H2O) R 32 3 2

VIII/F.29-30 Stokesite CaSnSi3O9·2(H2O) Pnna 2/m 2/m 2/m

Other Hilairite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Search for Hilairite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Hilairite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Hilairite Mineral Data :

Ask about Hilairite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Hilairite Specimen Label here :

Hilairite

Na2ZrSi3O9·3(H2O)
Dana No: 59.2.3.1 Strunz No: VIII/F.29-10
Locality:

Notes: