Mineralogy Database

Palmierite Mineral Data

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General Palmierite Information

Help on Chemical  Formula: Chemical Formula: (K,Na)2Pb(SO4)2
Help on Composition: Composition: Molecular Weight = 469.47 gm
   Potassium  12.49 %  K    15.05 % K2O
   Sodium      2.45 %  Na    3.30 % Na2O
   Lead       44.13 %  Pb   47.54 % PbO
   Sulfur     13.66 %  S    34.11 % SO3
   Oxygen     27.26 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.5Na0.5Pb(SO4)2
Help on Environment: Environment: Fumarolic sublimate.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1907
Help on Locality: Locality: Vesuvius, Campania, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Luigi Palmieri (1807-1896), Italian physicist, Director of the Vesuvius Observatory, Italy.
Help on Name Pronunciation: Name Pronunciation: Palmierite + Pronunciation Say PALMIERITE
Help on Synonym: Synonym: ICSD 27652
  PDF 29-1015

Palmierite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.79417
Help on Cell Dimensions: Cell Dimensions: a = 5.495, c = 20.849, Z = 3; V = 545.19 Den(Calc)= 4.29
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.14(1), 1.24(0.9), 1.76(0.9),

Physical Properties of Palmierite

Help on Color: Color: Colorless, White.
Help on Density: Density: 4.33
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Palmierite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.032 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.041 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.166,KPDmeas= 0.1644,KC= 0.1594
Ncalc = 1.68 - 1.69
Help on Optical Data: Optical Data: Uniaxial (-), w=1.712.

Calculated Properties of Palmierite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.91 gm/cc
note: Specific Gravity of Palmierite =4.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEPalmierite = 752.49 barns/electron
U=PEPalmierite x relectron=2,942.69 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 162.78 (Gamma Ray American Petroleum Institute Units)
Concentration of Palmierite per GRapi unit = 0.61 (%)

Estimated Radioactivity from Palmierite - barely detectable


Palmierite Classification

Help on  Dana Class: Dana Class: (28)Anhydrous Acid and Sulfates
  (28.04)with miscellaneous formulae
  (28.04.03)Dana Group Palmierite (K,Na)2Pb(SO4)2 R 3m 3 2/m Kalistrontite K2Sr(SO4)2 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 07.AD.40 07 - SULFATES (SELENATES, TELLURATES)
  07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O
  07.AD -With only large cations
07.AD.40 Kalistrontite K2Sr(SO4)2 R 3m 3 2/m
07.AD.40 Palmierite (K,Na)2Pb(SO4)2 R 3m 3 2/m

Other Palmierite Information

Help on References: References: NAME( AntBidBlaNic5) 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 Palmierite :
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

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Dana No: Strunz No: 07.AD.40





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