Perlialite Mineral Data + Say PERLIALITE

General Perlialite Information
Help on Chemical Formula: Chemical Formula: K8Tl4Al12Si24O72·20(H2O)
Help on Composition: Composition: Molecular Weight = 3,027.26 gm
   Potassium  10.33 %  K    12.45 % K2O
   Aluminum   10.70 %  Al   20.21 % Al2O3
   Thallium    6.75 %  Tl    7.54 % Tl2O3
   Silicon    22.27 %  Si   47.63 % SiO2
   Hydrogen    1.33 %  H    11.90 % H2O
   Oxygen     48.62 %  O
             ______        ______ 
             100.00 %       99.74 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K8TlAl12Si24O72·20(H2O)
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Pegmatites of Mt.Eveslogchorr and Mt. Yukspor, Khibina alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Lily Alekseevna Perekrest, teacher of mineralogy at the Kirovsk Mining Technical School
Help on Synonym: Synonym: ICSD 69404
  PDF 38-395
 

Perlialite Image

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Perlialite

Comments: Opaque white fibrous perlialite coating on syenite rock.
Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Perlialite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.40616
Help on Cell Dimensions: Cell Dimensions: a = 18.49, c = 7.51, Z = 1; V = 2,223.54 Den(Calc)= 2.26
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.306(1), 4.62(1), 16(1),
Click Here for Large Perlialite Structure Window Crystal Structure:

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Artioli G , Kvick A , European Journal of Mineralogy , 2 (1990) p.749-759, Synchrotron X-ray Rietveld study of perlialite, the natural counterpart of synthetic zeolite-L, Sample: data collected with synchrotron radiation

View Additional jPOWD Structure files for Perlialite
[1]
 

Physical Properties of Perlialite

Help on Color: Color: Pearl white.
Help on Density: Density: 2.14
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Pearly
Help on Streak: Streak: white
 

Optical Properties of Perlialite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.082 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2148,KPDmeas= 0.2269,KC= 0.2098
Help on Optical Data: Optical Data: Biaxial (?), a=1.483, g=1.488, bire=0.0050
 

Calculated Properties of Perlialite

Help on Electron Density: Electron Density:

relectron=2.24 gm/cc
note: rPerlialite =2.26 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01064
Boson Index = 0.98936
Help on Photoelectric: Photoelectric:

PEPerlialite = 102.38 barns/electron
U=PEPerlialite x relectron= 229.46 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 147.85 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Perlialite - barely detectable

 

Perlialite Classification
Help on Dana Class: Dana Class: 77.1.3.8 (77)Tectosilicate Zeolite group
  (77.1)true zeolites
  (77.1.3)Gismondine and related species
 
77.1.3.1 Gismondine Ca2Al4Si4O16·9(H2O) P 21/c 2/m
 
77.1.3.2 Amicite K2Na2Al4Si4O16·5(H2O) I2 2
 
77.1.3.3 Garronite Na2Ca5Al12Si20O64·27(H2O) I 41/a 4/m
 
77.1.3.4 Gobbinsite (Na2,Ca)2K2Al6Si10O32·12(H2O) P mn21 mm2
 
77.1.3.5 Harmotome (Ba,Na,K)1-2(Si,Al)8O16·6(H2O) P 21/m 2/m
 
77.1.3.6 Phillipsite-Na (Na,K,Ca)1-2(Si,Al)8O16·6(H2O) P 21/m 2/m
 
77.1.3.6a Phillipsite-Ca! (Ca,K,Na)1-2(Si,Al)8O16·6(H2O) P 21/m 2/m
 
77.1.3.6b Phillipsite-K! (K,Na,Ca)1-2(Si,Al)8O16·6(H2O) P 21/m 2/m
 
77.1.3.8 Perlialite K8Tl4Al12Si24O72·20(H2O) P 6/mmm 6/m 2/m 2/m
 
77.1.3.9 Paulingite-K (K2,Ca,Na2,Ba)5Al10Si35O90·45(H2O) Im3m 4/m 3 2/m
 
77.1.3.9a Paulingite-Na! (Na2,K2,Ca,Ba)5Al10Si35O90·45(H2O) Im3m 4/m 3 2/m
 
77.1.3.9b Paulingite-Ca! (Ca,K,Na,Ba)5[Al10Si35O84]·34(H2O) Im3m 4/m 3 2/m
 
77.1.3.10 Mazzite K2CaMg2(Al,Si)36O72·28(H2O) P 63/mmc 6/m 2/m 2/m
 
77.1.3.11 Merlinoite (K,Ca,Na,Ba)7Si23Al9O64·23(H2O) I mmm 2/m 2/m 2/m
 
77.1.3.12 Montesommaite (K,Na)9Al9Si23O64·10(H2O) F dd2 mm2
Help on Strunz Class: Strunz Class: VIII/J.26-100 VIII - Silicates
  VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites
  VIII/J.26 - Zeolite group, Willhendersonite - Chabazite - Perialite series
 
VIII/J.26-10 Willhendersonite KCaAl3Si3O12·5(H2O) P1 1
 
VIII/J.26-20 Chabazite-Na! (Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m
 
VIII/J.26-25 Chabazite-K! (K2,Ca,Na2,Mg)[Al2Si4O12]·6(H2O) R 3m 3 2/m
 
VIII/J.26-30 Chabazite-Ca (Ca0.5,Na,K)4[Al4Si8O24]·12H2O P1 1
 
VIII/J.26-35 Chabazite-Sr! (Sr,Ca,K2,Na2)[Al2Si4O12]·6(H2O) R 3m 3 2/m
 
VIII/J.26-40 Tschernichite (Ca,Na)(Si6Al2)O16·4-8(H2O) P 4/mmm 4/m 2/m 2/m
 
VIII/J.26-50 Gmelinite-Na (Na2,Ca)Al2Si4O12·6(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-52 Gmelinite-K! (K,Na,Ca)6(Al7Si17O48)·22(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-54 Gmelinite-Ca! (Ca,Na2)Al2Si4O12·6(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-58 Levyne-Na! (Na2,Ca,K2)Al2Si4O12·6(H2O) R 3m 3 2/m
 
VIII/J.26-60 Levyne-Ca (Ca,Na2,K2)Al2Si4O12·6(H2O) R 3m 3 2/m
 
VIII/J.26-70 Offretite (K2,Ca,Mg)2.5Al5Si13O36·15(H2O) P 6m2 6 m2
 
VIII/J.26-80 Mazzite K2CaMg2(Al,Si)36O72·28(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-90 Erionite-Na (Na2,K2,Ca)2[Al4Si14O36]·15(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-92 Erionite-K! (K2,Ca,Na2)2[Al4Si14O36]·15(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-94 Erionite-Ca! (Ca,K2,Na2)2[Al4Si14O36]·15(H2O) P 63/mmc 6/m 2/m 2/m
 
VIII/J.26-95 Bellbergite (K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O) P 63/mmc, P 62c-, P 63mc Hex
 
VIII/J.26-100 Perlialite K8Tl4Al12Si24O72·20(H2O) P 6/mmm 6/m 2/m 2/m
 

Other Perlialite Information
Help on References: References: 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 Perlialite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Perlialite

K8Tl4Al12Si24O72·20(H2O)
Dana No: 77.1.3.8 Strunz No: VIII/J.26-100
Locality:

 

Notes:

 
 
   
 
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