Apophyllite-(NaF)  Mineral Data

Apophyllite-(NaF) Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About

Advertisment
For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an
Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.
Adamsminerals.com- Online mineral store front for mineral collectors
Your premier supplier of quality mineral specimens from Southern Africa and the world at large

General Apophyllite-(NaF) Information

Help on Chemical  Formula: Chemical Formula: NaCa4Si8O20F•8(H2O)
Help on Composition: Composition: Molecular Weight = 891.09 gm
   Sodium     2.58 %  Na    3.48 % Na2O
   Calcium   17.99 %  Ca   25.17 % CaO
   Silicon   25.21 %  Si   53.94 % SiO2
   Hydrogen   1.81 %  H    16.17 % H2O
   Oxygen    50.27 %  O
   Fluorine   2.13 %  F     2.13 % F
               -   %   F    -0.90 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCa4Si8O20F•8(H2O)
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek apophylliso - "it flakes off" and the composition.
Help on Name Pronunciation: Name Pronunciation: Apophyllite-(NaF) + Pronunciation Say APOPHYLLITE-(NAF)
Help on Synonym: Synonym: Natroapophyllite - Renamed to Apophyllite-(NaF) by Mineralogical Record, v39, (2008), p 131
 

Apophyllite-(NaF) Image

Click Here for Larger Apophyllite-(NaF) Image in a New Browser Window Images:
Click Here for Larger Apophyllite-(NaF) Image

Apophyllite-(NaF)

Comments: Pale pink opaque blocky crystal natroapophyllite aggregate.
Location: Boghil Quarry, Glengormley, Newtownabbey, County Antrim, Northern Ireland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Apophyllite-(NaF) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9993:1:1.7779
Help on Cell Dimensions: Cell Dimensions: a = 8.875, b = 8.881, c = 15.79, Z = 2; V = 1,244.55 Den(Calc)= 2.38
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.96(1), 2.98(0.63), 7.83(0.2),
Click Here for Large Apophyllite-(NaF) Structure Window 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


Miura Y , Kato T , Rucklidge J C , Matsueda H , American Mineralogist , 66 (1981) p.410-423, Natroapophyllite, a new orthorhombic sodium analog of apophyllite, II. Crystal structure

 

Physical Properties of Apophyllite-(NaF)

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: White, Pink, Green, Yellow, Violet.
Help on Density: Density: 2.3 - 2.4, Average = 2.34
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Pseudo Cubic - Crystals show a cubic outline.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Apophyllite-(NaF)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2266,KPDmeas= 0.2295,KC= 0.2277
Ncalc = 1.52 - 1.55
Help on Optical Data: Optical Data: Biaxial (+), a=1.536, b=1.538, g=1.544, bire=0.0080, 2V(Calc)=62, 2V(Meas)=32.
 

Calculated Properties of Apophyllite-(NaF)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.41 gm/cc
note: Specific Gravity of Apophyllite-(NaF) =2.38 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEApophyllite-(NaF) = 3.23 barns/electron
U=PEApophyllite-(NaF) x rElectron Density= 7.81 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Apophyllite-(NaF) is Not Radioactive
 

Apophyllite-(NaF) Classification

Help on  Dana Class: Dana Class: 72.03.01.03 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
  (72.03)with 3-, 4-, or 5-membered rings and 8-membered rings
  (72.03.01)Apophyllite group (4- & 8-membered rings)
 
72.03.01.00 Apophyllite* KCa4(Si4O10)2F•8(H2O) P 4/mnc 4/m 2/m 2/m
 
72.03.01.01 Apophyllite-(KF) (K,Na)Ca4Si8O20(F,OH)•8(H2O) P 4/mnc 4/m 2/m 2/m
 
72.03.01.02 Apophyllite-(KOH) KCa4Si8O20(OH,F)•8(H2O) P 4/mnc 4/m 2/m 2/m
 
72.03.01.03 Apophyllite-(NaF) NaCa4Si8O20F•8(H2O) Pnnm 2/m 2/m 2/m
 
72.03.01.04 Carletonite KNa4Ca4Si8O18(CO3)4(OH,F)•(H2O) P 4/mbm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.EA.15 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EA -Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
 
09.EA.15 Apophyllite* KCa4(Si4O10)2F•8(H2O) P 4/mnc 4/m 2/m 2/m
 
09.EA.15 Apophyllite-(KOH) KCa4Si8O20(OH,F)•8(H2O) P 4/mnc 4/m 2/m 2/m
 
09.EA.15 Apophyllite-(KF) (K,Na)Ca4Si8O20(F,OH)•8(H2O) P 4/mnc 4/m 2/m 2/m
 
09.EA.15 Apophyllite-(NaF) NaCa4Si8O20F•8(H2O) Pnnm 2/m 2/m 2/m
 

Other Apophyllite-(NaF) Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Apophyllite-(NaF) :
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 Apophyllite-(NaF) using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Apophyllite-(NaF) :

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

Ask about Apophyllite-(NaF) 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 Espaņol

Print or Cut-and-Paste your Apophyllite-(NaF) Specimen Label here :

Apophyllite-(NaF)

NaCa4Si8O20F•8(H2O)
Dana No: 72.03.01.03 Strunz No: 09.EA.15
Locality:

 

Notes: