Tsepinite-Sr Mineral Data (original) (raw)

General Tsepinite-Sr Information

Help on Chemical Formula: Chemical Formula:

(Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O)

Help on Composition: Composition:

Molecular Weight = 572.95 gm

Potassium 1.09 % K 1.32 % K2O

Barium 3.83 % Ba 4.28 % BaO

Sodium 0.44 % Na 0.59 % Na2O

Strontium 4.28 % Sr 5.06 % SrO

Calcium 0.63 % Ca 0.88 % CaO

Titanium 11.03 % Ti 18.40 % TiO2

Niobium 11.19 % Nb 16.01 % Nb2O5

Aluminum 0.09 % Al 0.18 % Al2O3

Zinc 0.23 % Zn 0.28 % ZnO

Iron 0.10 % Fe 0.13 % FeO

Silicon 19.51 % Si 41.74 % SiO2

Hydrogen 1.24 % H 11.12 % H2O

Oxygen 46.33 % O

______ ______

100.00 % 99.99 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Sr0.28Ba0.16K0.16Na0.11Ca0.09Zn0.02Ti1.32Nb0.69Fe2+0.01Si3.98Al0.02O12(OH)1.89O0.11�2.59(H2O)

Help on Environment: Environment:

Found in hydrothermal paragenesis in cavities of nepheline-syenite pegmatite. Labuntsovite group (the vuoriyarvite subgroup)

Help on IMA Status: IMA Status:

Approved IMA 2004 (Dana # Added)

Help on Locality: Locality:

Eveslogchorr Mountain, Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named as the Sr analog of tsepinite--Na, -K, and -Ca.

Help on Synonym: Synonym:

IMA2004-008

Tsepinite-Sr Image

Click Here for Larger Tsepinite-Sr Image in a New Browser Window Images:

Click Here for Larger Tsepinite-Sr Image Tsepinite-Sr Comments: BSE image of crystals of tsepinite-Sr with Ba-enriched (light parts) margin zones.. Location: Mt. Eveslogchorr, Khibiny. Russia..Scale: See Image. © New Data on Minerals. M., 2005. Vol. 40

Tsepinite-Sr Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.0192:1:0.5543

Help on Cell Dimensions: Cell Dimensions:

a = 14.49, b = 14.216, c = 7.88, Z = 4; beta = 117.1° V = 1,444.99 Den(Calc)= 2.63

Help on Crystal System: Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Cm

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.23(1), 7.1(0.9), 2.51(0.8),3.135(0.8), 1.728(0.5), 6.45(0.5), 1.57(0.45), 5.01(0.4),

Physical Properties of Tsepinite-Sr

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Colorless, White.

Help on Density: Density:

2.67

Help on Diaphaneity: Diaphaneity:

Translucent to transparent

Help on Hardness: Hardness:

5 - Apatite

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

white

Optical Properties of Tsepinite-Sr

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2631,KPDmeas= 0.2592,KC= 0.2593
Ncalc = 1.68 - 1.69

Help on Optical Data: Optical Data:

Biaxial (+), a=1.649, b=1.657, g=1.77, bire=0.1210, 2V(Calc)=32, 2V(Meas)=20. Dispersion very weak r,v.

Calculated Properties of Tsepinite-Sr

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.61 gm/cc
note: Specific Gravity of Tsepinite-Sr =2.67 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PETsepinite-Sr = 39.54 barns/electron
U=PETsepinite-Sr x relectron= 103.04 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 15.38 (Gamma Ray American Petroleum Institute Units)
Concentration of Tsepinite-Sr per GRapi unit = 6.50 (%)

Estimated Radioactivity from Tsepinite-Sr - barely detectable

Tsepinite-Sr Classification

Help on Dana Class: Dana Class:

60.01.03b.06 (60)Cyclosilicate Four-Membered Rings

(60.01)as Titanosilicates

(60.01.03b)Labuntsovite Group (Vuoriyarvite subgroup Monoclinic [Cm])

60.01.03b.01 Vuoriyarvite-K! (K,Na)2(Nb,Ti)2Si4O12(O,OH)2•4(H2O) Cm m

60.01.03b.02 Tsepinite-Na! (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2•3(H2O) Cm m

60.01.03b.03 Tsepinite-K! (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O) Cm m

60.01.03b.04 Tsepinite-Ca! (Ca,K,Na,[])2(Ti,Nb)2(Si4O12)(OH,O)2•4(H2O) C 2/m 2/m

60.01.03b.05 Paratsepinite-Ba! (Ba,Na,K)2-x(Ti,Nb)2(Si4O12)(OH,O)2•4(H2O) C 2/m 2/m

60.01.03b.06 Tsepinite-Sr! (Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O) Cm m

Help on Strunz Class: Strunz Class:

09.CE.30b 09 - SILICATES (Germanates)

09.C - Cyclosilicates

09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),

09.CE.30b Vuoriyarvite-K! (K,Na)2(Nb,Ti)2Si4O12(O,OH)2•4(H2O) Cm m

09.CE.30b Tsepinite-Sr! (Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O) Cm m

09.CE.30b Tsepinite-Ca! (Ca,K,Na,[])2(Ti,Nb)2(Si4O12)(OH,O)2•4(H2O) C 2/m 2/m

09.CE.30b Tsepinite-K! (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O) Cm m

09.CE.30b Tsepinite-Na! (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2•3(H2O) Cm m

Other Tsepinite-Sr Information

Help on References: References:

NAME( New Data on Minerals, v40:11) PHYS. PROP.(New Data on Minerals, v40:11) OPTIC PROP.(New Data on Minerals, v40:11)

Help on See Also: See Also:

Links to other databases for Tsepinite-Sr :
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

Search for Tsepinite-Sr using:

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

Visit our Advertisers for Tsepinite-Sr :

A Bijoux Google Search for Tsepinite-Sr
Adam's Minerals Google Search for Tsepinite-Sr
Cape Minerals Google Search for Tsepinite-Sr
Dakota Matrix Minerals Google Search for Tsepinite-Sr
Excalibur Mineral Corp. Google Search for Tsepinite-Sr
Exceptional Minerals Google Search for Tsepinite-Sr
John Betts Fine Minerals Search for Tsepinite-Sr
McDougall Minerals Google Search for Tsepinite-Sr
Mineral News Website Link
Rock and Mineral Shows Google Search for Tsepinite-Sr
Weinrich Minerals, Inc. Google Search for Tsepinite-Sr

Ask about Tsepinite-Sr 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 Espa�ol

Print or Cut-and-Paste your Tsepinite-Sr Specimen Label here :

Tsepinite-Sr

(Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O)
Dana No: 60.01.03b.06 Strunz No: 09.CE.30b
Locality:

Notes: