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Phillipsite-K Mineral Data

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General Phillipsite-K Information

Help on Chemical  Formula: Chemical Formula: (K,Na,Ca)1-2(Si,Al)8O16•6(H2O)
Help on Composition: Composition: Molecular Weight = 661.10 gm
   Potassium   4.73 %  K     5.70 % K2O
   Sodium      2.43 %  Na    3.28 % Na2O
   Calcium     4.24 %  Ca    5.94 % CaO
   Aluminum   11.43 %  Al   21.59 % Al2O3
   Silicon    22.09 %  Si   47.26 % SiO2
   Hydrogen    1.83 %  H    16.35 % H2O
   Oxygen     53.24 %  O
             ______        ______ 
             100.00 %      100.12 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.8Na0.7Ca0.7Si5.2Al2.8O16•6(H2O)
Help on Environment: Environment: Common zeolite in volcanic rocks, ore veins, diagenetically altered rhyolitic vitric tuffs, saline lake deposits, and ocean floor sediments. Shows solid solution toward harmotome.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Capo di Bove, south of Rome, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after William Phillips (1775-1829), English mineralogist and founder of the Geological Society of London. The K-dominant member of the phillipsite series.
Help on Name Pronunciation: Name Pronunciation: Phillipsite-K + Pronunciation Say PHILLIPSITE-K
Help on Synonym: Synonym: Abrazite
  Cross stone

Phillipsite-K Image

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Comments: Clear crystalline ball of phillipsite-K crystals.
Location: Bova, Calabria, Italy. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Phillipsite-K Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7021:1:0.6141
Help on Cell Dimensions: Cell Dimensions: a = 9.9, b = 14.1, c = 8.66, Z = 2; beta = 124.75° V = 993.25 Den(Calc)= 2.21
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.21(1), 7.16(1), 7.18(1),

Physical Properties of Phillipsite-K

Help on Cleavage: Cleavage: {010} Distinct, {001} Indistinct
Help on Color: Color: White, Reddish white, Light yellow, Pink.
Help on Density: Density: 2.2
Help on Diaphaneity: Diaphaneity: Translucent to opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudo Tetragonal - Crystals show a tetragonal shape.
Help on Habit: Habit: Twinning Common - Crystals are usually twinned.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Phillipsite-K

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.225,KPDmeas= 0.226,KC= 0.2285
Ncalc = 1.5
Help on Optical Data: Optical Data: Biaxial (+/-), a=1.483-1.505, b=1.484-1.511, g=1.486-1.514, bire=0.0030-0.0090, 2V(Calc)=70-72, 2V(Meas)=60-90. Dispersion r > v or r < v.

Calculated Properties of Phillipsite-K

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.22 gm/cc
note: Specific Gravity of Phillipsite-K =2.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEPhillipsite-K = 2.24 barns/electron
U=PEPhillipsite-K x relectron= 4.97 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 69.02 (Gamma Ray American Petroleum Institute Units)
Concentration of Phillipsite-K per GRapi unit = 1.45 (%)

Estimated Radioactivity from Phillipsite-K - barely detectable


Phillipsite-K Classification

Help on  Dana Class: Dana Class: (77)Tectosilicate Zeolite group
  (77.01)true zeolites
  (77.01.03)Gismondine and related species Gismondine Ca2Al4Si4O16•9(H2O) P 21/c 2/m Amicite K2Na2Al4Si4O16•5(H2O) I2 2 Garronite Na2Ca5Al12Si20O64•27(H2O) I 41/a 4/m Gobbinsite (Na2,Ca)2K2Al6Si10O32•12(H2O) P mn21 mm2 Harmotome (Ba,Na,K)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m Phillipsite-Na (Na,K,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m Phillipsite-Ca! (Ca,K,Na)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m Phillipsite-K! (K,Na,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m Perlialite K8Tl4Al12Si24O72•20(H2O) P 6/mmm 6/m 2/m 2/m Paulingite-K (K2,Ca,Na2,Ba)5Al10Si35O90•45(H2O) Im3m 4/m 3 2/m Paulingite-Na! (Na2,K2,Ca,Ba)5Al10Si35O90•45(H2O) Im3m 4/m 3 2/m Paulingite-Ca! (Ca,K,Na,Ba)5[Al10Si35O84]•34(H2O) Im3m 4/m 3 2/m Mazzite-Mg K2CaMg2(Al,Si)36O72•28(H2O) P 63/mmc 6/m 2/m 2/m Mazzite-Na! Na8Al8Si28O72•30H2O P 63/mmc 6/m 2/m 2/m Merlinoite (K,Ca,Na,Ba)7Si23Al9O64•23(H2O) I mmm 2/m 2/m 2/m Montesommaite (K,Na)9Al9Si23O64•10(H2O) F dd2 mm2
Help on  Strunz Class: Strunz Class: 09.GC.10 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GC -Chains of doubly-connected 4-membered rings
09.GC.10 Harmotome (Ba,Na,K)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
09.GC.10 Phillipsite-Na (Na,K,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
09.GC.10 Phillipsite-Ca! (Ca,K,Na)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
09.GC.10 Phillipsite-K! (K,Na,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m

Other Phillipsite-K Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Phillipsite-K :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 09.GC.10





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