Terranovaite Mineral Data

General Terranovaite Information

Chemical Formula:

(Na,Ca)8(Si68Al12)O160•29(H2O)

Composition:

Molecular Weight = 5,573.13 gm

Potassium 0.14 % K 0.17 % K₂O

Sodium 1.73 % Na 2.34 % Na₂O

Calcium 2.66 % Ca 3.72 % CaO

Magnesium 0.09 % Mg 0.14 % MgO

Aluminum 5.95 % Al 11.25 % Al₂O₃

Silicon 34.12 % Si 72.99 % SiO₂

Hydrogen 1.05 % H 9.37 % H₂O

Oxygen 54.26 % O

______ ______

100.00 % 99.99 % = TOTAL OXIDE

Empirical Formula:

Na_4.2K_0.2Mg_0.2Ca_3.7Al_12.3Si_67.7O₁₆₀•29(H₂O)

Environment:

In cavities in dolorites.

IMA Status:

Approved IMA 1997 (Dana # Added)

Locality:

The southwest crest, just below the summit of Mt. Adamson, Northern Victoria Land, Antarctica. Link to MinDat.org Location Data.

Name Origin:

For the Italian Antarctic Station at Terranova Bay, Antarctica.

Name Pronunciation:

Terranovaite + Pronunciation

Synonym:

ICSD 83466

IMA1995-026

Terranovaite Image

Images:

Terranovaite

Comments: B&W image of terranovaite crystal. (AmMin, v82:423).
Location: Jurassic Ferrar dolerites of Mt. Adamson, Northern Victoria Land, Antarctica. Scale: See Image.
© American Mineralogist

Terranovaite Crystallography

Axial Ratios:

a:b:c =0.4081:1:0.8403

Cell Dimensions:

a = 9.747, b = 23.88, c = 20.068, Z = 1; V = 4,670.99 Den(Calc)= 1.98

Crystal System:

Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mcm

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

By Intensity(I/I_o): 3.79(1)(025,240), 10.16(0.65)(002), 11.94(0.4)(020),3.61(0.4)(153), 9.04(0.33)(110),

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: ( 0 1 0) ( 1 1 0) ( 0 0 1)

Warning: this java applet does not work in some browsers because of security restrictions.

Physical Properties of Terranovaite

Cleavage:

{010} Perfect, {001} Parting

Color:

Colorless, Bluish white.

Density:

1.98 - 2.13, Average = 2.05

Diaphaneity:

Transparent

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Globular - Spherical, or nearly so, rounded forms (e.g. wavellite).

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Terranovaite

Gladstone-Dale:

CI meas= -0.06 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.1 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2419,KPDmeas= 0.2331,KC= 0.2199
Ncalc = 1.44 - 1.47

Optical Data:

Biaxial (+), a=1.476, b=1.478, g=1.483, bire=0.0070

Calculated Properties of Terranovaite

Electron Density:

Bulk Density (Electron Density)=2.07 gm/cc
note: Specific Gravity of Terranovaite =2.06 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Terranovaite= 1.87 barns/electron
U=PE_Terranovaite x r_electron= 3.87 barns/cc.

Radioactivity:

GRapi = 2.06 (Gamma Ray American Petroleum Institute Units)
Concentration of Terranovaite per GRapi unit = 48.53 (%)

Estimated Radioactivity from Terranovaite - barely detectable

Terranovaite Classification

Dana Class:

77.01.06.09 (77)Tectosilicate Zeolite group

(77.01)true zeolites

(77.01.06)Mordenite and related species

77.01.06.01 Mordenite (Ca,Na2,K2)Al2Si10O24•7(H2O) C mc2₁ mm2

77.01.06.02 Epistilbite CaAl2Si6O16•5(H2O) C1 1

77.01.06.03 Maricopaite Pb7Ca2(Si,Al)48O100•32(H2O) Cm2m 2/m 2/m 2/m

77.01.06.04 Dachiardite-Ca (Ca,Na2,K2)5Al10Si38O96•25(H2O) C 2/m 2/m

77.01.06.05 Dachiardite-Na (Na2,Ca,K2)4Al4Si20O48•13(H2O) C 2/m 2/m

77.01.06.06 Ferrierite-Mg (Mg,Na,K)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

77.01.06.06a Ferrierite-K! (K,Na)2Mg(Si,Al)18O36•9(H2O) Pnnm 2/m 2/m 2/m

77.01.06.06b Ferrierite-Na! (Na,K)2Mg(Si,Al)18O36•9(H2O) P 2₁/n 2/m

77.01.06.07 Boggsite NaCa2(Al5Si19O48)•17(H2O) I mma 2/m 2/m 2/m

77.01.06.08 Gottardiite! Na3Mg3Ca5Al19Si117O272•93(H2O) C mca 2/m 2/m 2/m

77.01.06.09 Terranovaite! (Na,Ca)8(Si68Al12)O160•29(H2O) C mcm 2/m 2/m 2/m

77.01.06.10 Mutinaite! Na3Ca4Si85Al11O192•60(H2O) P nma 2/m 2/m 2/m

77.01.06.12 Direnzoite! NaK6MgCa2(Al13Si47O120)•36H2O Pmmn 2/m 2/m 2/m

Strunz Class:

09.GF.05 09 - SILICATES (Germanates)

09.G - Tektosilicates with Zeolitic H2O

09.GF -Other Rare Zeolites

09.GF.05 Terranovaite! (Na,Ca)8(Si68Al12)O160•29(H2O) C mcm 2/m 2/m 2/m

Other Terranovaite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.82,p423-429,1997) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Terranovaite :
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
11 - WWW-MINCRYST

Search for Terranovaite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Terranovaite :

Ask about Terranovaite 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 Terranovaite Specimen Label here :

Terranovaite

(Na,Ca)8(Si68Al12)O160•29(H2O)
Dana No: 77.01.06.09 Strunz No: 09.GF.05
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.