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Phillipsite-Ca Mineral Data

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General Phillipsite-Ca Information

Help on Chemical  Formula: Chemical Formula: (Ca,K,Na)1-2(Si,Al)8O16•6(H2O)
Help on Composition: Composition: Molecular Weight = 658.41 gm
   Potassium   3.56 %  K     4.29 % K2O
   Sodium      1.40 %  Na    1.88 % Na2O
   Calcium     6.09 %  Ca    8.52 % CaO
   Aluminum   11.47 %  Al   21.68 % Al2O3
   Silicon    22.18 %  Si   47.45 % SiO2
   Hydrogen    1.84 %  H    16.42 % H2O
   Oxygen     53.46 %  O
             ______        ______ 
             100.00 %      100.24 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaK0.6Na0.4Si5.2Al2.8O16•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: Lower Salt Lake Tuff, Puuloa Road near junction with Moanalua Road, Oahu, Hawaii. 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 Ca-dominant member of the phillipsite series.
Help on Name Pronunciation: Name Pronunciation: Phillipsite-Ca + Pronunciation Say PHILLIPSITE-CA
Help on Synonym: Synonym: Abrazite
  Cross stone
  Wellsite-barian Phillipsite-Ca
 

Phillipsite-Ca Image

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  Phillipsite-Ca

Comments: White, stout-prismatic phillipsite-Ca crystals in vugs in basalt.
Location: Three Mile Creek, Ritter, Grant County, Oregon, USA. Scale: Specimen Size 2x2 cm.
© Diederik Visser

Phillipsite-Ca 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)= 2.20
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-Ca

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-Ca

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.226,KPDmeas= 0.226,KC= 0.2293
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-Ca

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.23 gm/cc
note: Specific Gravity of Phillipsite-Ca =2.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEPhillipsite-Ca = 2.33 barns/electron
U=PEPhillipsite-Ca x relectron= 5.19 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 52.02 (Gamma Ray American Petroleum Institute Units)
Concentration of Phillipsite-Ca per GRapi unit = 1.92 (%)

Estimated Radioactivity from Phillipsite-Ca - barely detectable

 

Phillipsite-Ca Classification

Help on  Dana Class: Dana Class: 77.01.03.06a (77)Tectosilicate Zeolite group
  (77.01)true zeolites
  (77.01.03)Gismondine and related species
 
77.01.03.01 Gismondine Ca2Al4Si4O16•9(H2O) P 21/c 2/m
 
77.01.03.02 Amicite K2Na2Al4Si4O16•5(H2O) I2 2
 
77.01.03.03 Garronite Na2Ca5Al12Si20O64•27(H2O) I 41/a 4/m
 
77.01.03.04 Gobbinsite (Na2,Ca)2K2Al6Si10O32•12(H2O) P mn21 mm2
 
77.01.03.05 Harmotome (Ba,Na,K)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.06 Phillipsite-Na (Na,K,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.06a Phillipsite-Ca! (Ca,K,Na)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.06b Phillipsite-K! (K,Na,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.08 Perlialite K8Tl4Al12Si24O72•20(H2O) P 6/mmm 6/m 2/m 2/m
 
77.01.03.09 Paulingite-K (K2,Ca,Na2,Ba)5Al10Si35O90•45(H2O) Im3m 4/m 3 2/m
 
77.01.03.09a Paulingite-Na! (Na2,K2,Ca,Ba)5Al10Si35O90•45(H2O) Im3m 4/m 3 2/m
 
77.01.03.09b Paulingite-Ca! (Ca,K,Na,Ba)5[Al10Si35O84]•34(H2O) Im3m 4/m 3 2/m
 
77.01.03.10 Mazzite-Mg K2CaMg2(Al,Si)36O72•28(H2O) P 63/mmc 6/m 2/m 2/m
 
77.01.03.10a Mazzite-Na! Na8Al8Si28O72•30H2O P 63/mmc 6/m 2/m 2/m
 
77.01.03.11 Merlinoite (K,Ca,Na,Ba)7Si23Al9O64•23(H2O) I mmm 2/m 2/m 2/m
 
77.01.03.12 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-Ca 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-Ca :
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

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Print or Cut-and-Paste your Phillipsite-Ca Specimen Label here :

Phillipsite-Ca

(Ca,K,Na)1-2(Si,Al)8O16•6(H2O)
Dana No: 77.01.03.06a Strunz No: 09.GC.10
Locality:

 

Notes:

 

 
   
 


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