Mineralogy Database

Pachnolite Mineral Data

Search Webmineral :

General Pachnolite Information

Help on Chemical  Formula: Chemical Formula: NaCaAlF6•(H2O)
Help on Composition: Composition: Molecular Weight = 222.06 gm
   Sodium    10.35 %  Na   13.96 % Na2O
   Calcium   18.05 %  Ca   25.25 % CaO
   Aluminum  12.15 %  Al   22.96 % Al2O3
   Hydrogen   0.91 %  H     8.11 % H2O
   Oxygen     7.21 %  O
   Fluorine  51.33 %  F    51.33 % F
               -   %   F   -21.62 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCaAlF6•(H2O)
Help on Environment: Environment: Alteration product of cryolite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1863
Help on Locality: Locality: Greenland, Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for frost and stone, in allusion to its appearance.
Help on Name Pronunciation: Name Pronunciation: Pachnolite + Pronunciation Say PACHNOLITE
Help on Synonym: Synonym: ICSD 40132
  PDF 5-356

Pachnolite Image

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


Comments: Color-zoned (darker core) prismatic translucent pachnolite crystals, with secondary white prismatic microcrystals.
Location: Ivigtut, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Pachnolite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.1638:1:1.5056
Help on Cell Dimensions: Cell Dimensions: a = 12.12, b = 10.414, c = 15.68, Z = 16; beta = 90.36° V = 1,979.05 Den(Calc)= 2.98
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: F2/d
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.95(1), 1.971(0.9), 2.79(0.7),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 2 2 1) ( 1 1 1) ( 1 1 0)

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


Physical Properties of Pachnolite

Help on Cleavage: Cleavage: {001} Poor
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.98
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudo Orthorhombic - Crystals show an orthorhombic shape.
Help on Habit: Habit: Twinning Common - Crystals are usually twinned.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white

Optical Properties of Pachnolite

Help on Optical Data: Optical Data: Biaxial (+), a=1.411, b=1.413, g=1.42, bire=0.0090

Calculated Properties of Pachnolite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.90 gm/cc
note: Specific Gravity of Pachnolite =2.98 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002796037
Boson Index = 0.9997203963
Help on Photoelectric: Photoelectric: PEPachnolite = 3.06 barns/electron
U=PEPachnolite x rElectron Density= 8.87 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pachnolite is Not Radioactive

Pachnolite Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.06)with miscellaneous formulae
  (11.06.05)Dana Group Pachnolite NaCaAlF6•(H2O) F2/d 2/m
Help on  Strunz Class: Strunz Class: 03.CB.40 03 - HALIDES
  03.C - Complex Halides
  03.CB -Neso-aluminofluorides
03.CB.40 Pachnolite NaCaAlF6•(H2O) F2/d 2/m
03.CB.40 Thomsenolite NaCaAlF6•(H2O) P 21/c 2/m

Other Pachnolite Information

Help on References: References: NAME( Ford32) 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 Pachnolite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

Search for Pachnolite using:

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

Visit our Advertisers for Pachnolite :

Ask about Pachnolite 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 Pachnolite Specimen Label here :


Dana No: Strunz No: 03.CB.40





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