Partheite Mineral Data

Partheite Mineral Data
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General Partheite Information

Help on Chemical Formula: Chemical Formula: Ca2Al4Si4O15(OH)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 646.49 gm
   Calcium   12.40 %  Ca   17.35 % CaO
   Aluminum  16.69 %  Al   31.54 % Al2O3
   Silicon   17.38 %  Si   37.18 % SiO2
   Hydrogen   1.56 %  H    13.93 % H2O
   Oxygen    51.97 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Al4Si4O15(OH)2•4(H2O)
Help on Environment: Environment: Ophiolite zone in rodingitic rocks. Dimorph of lawsonite.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Taurus Mountains, Burdur Province, southwestern Trukey. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Erwin Parthe (1928-), crystallographer at the University of Geneva.
Help on Name Pronunciation: Name Pronunciation: Partheite + Pronunciation Say PARTHEITE
 

Partheite Image

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Partheite

Comments: 3 mm thick white band of partheite in matrix.
Location: Denezhkin, Kamen, Nord Urals, Russia. Scale: 0.9 x 1.6 cm.
© John Veevaert

Partheite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =2.4589:1:1.0603
Help on Cell Dimensions: Cell Dimensions: a = 21.59, b = 8.78, c = 9.31, Z = 4; beta = 91.47° V = 1,764.22 Den(Calc)= 2.43
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.79(1), 8.12(0.8), 6.1(0.7),
Click Here for Large Partheite Structure Window Crystal Structure:

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Engel N , Yvon K , Zeitschrift fur Kristallographie , 169 (1984) p.165-175, The crystal structure of partheite, Locality: Taurus mountains, Southwest Turkey

 

Physical Properties of Partheite

Help on Cleavage: Cleavage: {100} Distinct, {110} Distinct
Help on Color: Color: White, Colorless.
Help on Density: Density: 2.39 - 2.45, Average = 2.42
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Partheite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2278,KPDmeas= 0.2288,KC= 0.2264
Ncalc = 1.54 - 1.55
Help on Optical Data: Optical Data: Biaxial (+), a=1.547-1.55, b=1.549-1.552, g=1.559-1.565, bire=0.0120-0.0150, 2V(Calc)=44-50, 2V(Meas)=48. Dispersion r > v moderate.
 

Calculated Properties of Partheite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.45 gm/cc
note: Specific Gravity of Partheite =2.43 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.008534331
Boson Index = 0.991465669
Help on Photoelectric: Photoelectric: PEPartheite = 2.69 barns/electron
U=PEPartheite x rElectron Density= 6.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Partheite is Not Radioactive
 

Partheite Classification
Help on Dana Class: Dana Class: 77.02.04.01 (77)Tectosilicate Zeolite group
  (77.02)related species
  (77.02.04)Dana Group
 
77.02.04.01 Partheite Ca2Al4Si4O15(OH)2•4(H2O) C 2/c 2/m
Help on Strunz Class: Strunz Class: 09.GB.35 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GB -Chains of single connected 4-membered rings
 
09.GB.35 Partheite Ca2Al4Si4O15(OH)2•4(H2O) C 2/c 2/m
 

Other Partheite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Partheite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
16 - Zeolite Database by Bruno Herreros

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

Partheite

Ca2Al4Si4O15(OH)2•4(H2O)
Dana No: 77.02.04.01 Strunz No: 09.GB.35
Locality:

 

Notes: