Vuagnatite Mineral Data

General Vuagnatite Information

Chemical Formula: CaAlSiO4(OH) Composition: Molecular Weight = 176.15 gm    Calcium   22.75 %  Ca   31.84 % CaO    Aluminum  15.32 %  Al   28.94 % Al₂O₃    Silicon   15.94 %  Si   34.11 % SiO₂    Hydrogen   0.57 %  H     5.11 % H₂O    Oxygen    45.41 %  O             ______        ______              100.00 %      100.00 % = TOTAL OXIDE Empirical Formula: CaAl(SiO₄)(OH) Environment: In rodingitized dikes of pegmatitic anorthositic gabbro crosscutting harzburgite-serpentines in an ophiolite IMA Status: Approved IMA 1976 Locality: Bogurtlen Tepe Hill, 10 km northeast of Do¸ganbaba, Taurus Mountains, Burdur Province, Turkey. Link to MinDat.org Location Data. Name Origin: Named for Mark Bernard Vuagnat (1922- ), student of ophiolites, University of Geneva, Geneva, Switzerland. Name Pronunciation: Vuagnatite + Pronunciation Synonym: ICSD 12127   PDF 29-289  

Vuagnatite Image

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Vuagnatite Crystallography

Axial Ratios: a:b:c =0.8259:1:0.6653 Cell Dimensions: a = 7.055, b = 8.542, c = 5.683, Z = 4; V = 342.48 Den(Calc)= 3.42 Crystal System: Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁2₁2₁ X Ray Diffraction: By Intensity(I/I_o): 2.993(1), 2.635(0.7), 2.517(0.6), Crystal Structure:

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McNear E , Vincent M G , Parthe E , American Mineralogist , 61 (1976) p.831-838, The crystal structure of vuagnatite, CaAl(OH)SiO4

 

Physical Properties of Vuagnatite

Cleavage: {???} Perfect Color: Colorless, White, Light pink. Density: 3.2 - 3.25, Average = 3.22 Diaphaneity: Transparent to Translucent Hardness: 6 - Orthoclase Luster: Vitreous (Glassy) Streak: white  

Optical Properties of Vuagnatite

Gladstone-Dale: CI meas= -0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.21,KPDmeas= 0.2227,KC= 0.2151
Ncalc = 1.69 - 1.74 Optical Data: Biaxial (-), a=1.7, b=1.725, g=1.73, bire=0.0300, 2V(Calc)=46, 2V(Meas)=48.  

Calculated Properties of Vuagnatite

Electron Density: Bulk Density (Electron Density)=3.42 gm/cc
note: Specific Gravity of Vuagnatite =3.42 gm/cc.
Fermion Index: Fermion Index = 0.0079718879
Boson Index = 0.9920281121 Photoelectric: PE_Vuagnatite = 3.86 barns/electron
U=PE_Vuagnatite x rElectron Density= 13.17 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vuagnatite is Not Radioactive  

Vuagnatite Classification

Dana Class: 52.04.02.02 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O   (52.04)with cations in [6] and/or > [6] coordination   (52.04.02)Vuagnatite group  

52.04.02.01 Mozartite CaMnSiO4(OH) P 2₁2₁2₁ 2 2 2

 

52.04.02.02 Vuagnatite CaAlSiO4(OH) P 2₁2₁2₁ 2 2 2

Strunz Class: 09.AG.60 09 - SILICATES (Germanates)   09.A - Nesosilicates   09.AG -Nesosilicates with additional anions; cations in > [6] ± [6] coordination  

09.AG.60 Mozartite CaMnSiO4(OH) P 2₁2₁2₁ 2 2 2

 

09.AG.60 Vuagnatite CaAlSiO4(OH) P 2₁2₁2₁ 2 2 2

 

Other Vuagnatite Information

References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) See Also: Links to other databases for Vuagnatite :
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
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

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

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