Mineralogy Database

Palermoite Mineral Data

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General Palermoite Information

Help on Chemical  Formula: Chemical Formula: (Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4
Help on Composition: Composition: Molecular Weight = 653.48 gm
   Sodium       1.76 %  Na    2.37 % Na2O
   Strontium   10.06 %  Sr   11.89 % SrO
   Lithium      1.59 %  Li    3.43 % Li2O
   Calcium      1.53 %  Ca    2.15 % CaO
   Aluminum    16.52 %  Al   31.21 % Al2O3
   Phosphorus  18.96 %  P    43.44 % P2O5
   Hydrogen     0.62 %  H     5.51 % H2O
   Oxygen      48.97 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr0.75Ca0.25Li1.5Na0.5Al4(PO4)4(OH)4
Help on Environment: Environment: In cavities in a pegmatite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1952
Help on Locality: Locality: Palermon No. 1 mine, North Groton, New Hampshire, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Palermoite + Pronunciation Say PALERMOITE
Help on Synonym: Synonym: ICSD 4262
  PDF 18-950
 

Palermoite Image

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  Palermoite

Comments: Less than 1cm, vug with micro crystals of palermoite.
Location: Palermo mine, New Hampshire, USA. Scale: Picture size 0.5 cm.
© John Veevaert

Palermoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4615:1:0.7291
Help on Cell Dimensions: Cell Dimensions: a = 7.315, b = 15.849, c = 11.556, Z = 4; V = 1,339.75 Den(Calc)= 3.24
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: I mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.089(1), 4.36(0.64), 3.129(0.6),
Help on Forms: Forms:

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

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

Help on Above

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

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

 

Physical Properties of Palermoite

Help on Cleavage: Cleavage: {100} Perfect, {001} Distinct
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.22
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Splintery - Brittle fracture leaving splintery fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luminescence: Luminescence: Fluorescent, Short UV=white in direct x-ray beam.
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: white
 

Optical Properties of Palermoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1968,KPDmeas= 0.198,KC= 0.1996
Ncalc = 1.64 - 1.65
Help on Optical Data: Optical Data: Biaxial (-), a=1.627, b=1.642, g=1.644, bire=0.0170, 2V(Calc)=38, 2V(Meas)=20.
 

Calculated Properties of Palermoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.15 gm/cc
note: Specific Gravity of Palermoite =3.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0084908828
Boson Index = 0.9915091172
Help on Photoelectric: Photoelectric: PEPalermoite = 12.51 barns/electron
U=PEPalermoite x rElectron Density= 39.39 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Palermoite is Not Radioactive
 

Palermoite Classification

Help on  Dana Class: Dana Class: 41.07.01.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.07)where (A B)m (XO4)4 Zq
  (41.07.01)Palermoite Group
 
41.07.01.01 Palermoite (Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4 I mmm 2/m 2/m 2/m
 
41.07.01.02 Bertossaite Li2CaAl4(PO4)4(OH)4 Imaa,Iaa2 Ortho
Help on  Strunz Class: Strunz Class: 08.BH.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1
 
08.BH.25 Bertossaite Li2CaAl4(PO4)4(OH)4 Imaa,Iaa2 Ortho
 
08.BH.25 Palermoite (Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4 I mmm 2/m 2/m 2/m
 

Other Palermoite Information

Help on References: References: NAME( Dana8) 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 Palermoite :
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

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

Palermoite

(Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4
Dana No: 41.07.01.01 Strunz No: 08.BH.25
Locality:

 

Notes:

 

 
   
 


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