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Lithosite

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Formula:
K6Al4Si8O25 · 2H2O
System:
Monoclinic
Colour:
Colourless
Lustre:
Vitreous
Hardness:
This page provides mineralogical data about Lithosite.

Classification of Lithosite

Approved
9.GB.05

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings
77.2.2.1

77 : TECTOSILICATES Zeolites
2 : Zeolite group - related species
16.3.1

16 : Silicates Containing Aluminum and other Metals
3 : Aluminosilicates of K
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First Recorded Occurrence of Lithosite

Year of Discovery:
1983

Physical Properties of Lithosite

Vitreous
Colour:
Colourless
Hardness (Mohs):

Crystallography of Lithosite

Crystal System:
Monoclinic
Cell Parameters:
a = 15.19Å, b = 10.23Å, c = 8.34Å
β = 90.21°
Ratio:
a:b:c = 1.485 : 1 : 0.815
Unit Cell Volume:
V 1,295.97 ų (Calculated from Unit Cell)

Optical Data of Lithosite

Type:
Biaxial (+)
RI values:
nα = 1.510 nβ = 1.513 nγ = 1.527
2V:
Measured: 47° , Calculated: 52°
Max Birefringence:
δ = 0.017
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v strong

Chemical Properties of Lithosite

Formula:
K6Al4Si8O25 · 2H2O
Essential elements:
All elements listed in formula:

Relationship of Lithosite to other Species

9.GB.05Ammonioleucite(NH4,K)(AlSi2O6)
9.GB.05AnalcimeNa2(Al2Si4O12) · 2H2O
9.GB.05HsianghualiteCa3Li2(Be3Si3O12)F2
9.GB.05LeuciteK(AlSi2O6)
9.GB.05Pollucite(Cs,Na)2(Al2Si4O12) · 2H2O
9.GB.05WairakiteCa(Al2Si4O12) · 2H2O
9.GB.05KirchhoffiteCs(BSi2O6)
9.GB.10LaumontiteCaAl2Si4O12 · 4H2O
9.GB.15YugawaraliteCaAl2Si6O16 · 4H2O
9.GB.20RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2O
9.GB.25GoosecreekiteCa[Al2Si6O16] · 5H2O
9.GB.30Montesommaite(K,Na)9Al9Si23O64 · 10H2O
9.GB.35ParthéiteCaAl2Si2O8 · 2H2O
16.3.2KaliophiliteKAlSiO4
16.3.3KalsiliteKAlSiO4
16.3.4LeuciteK(AlSi2O6)
16.3.5MicroclineKAlSi3O8
16.3.6OrthoclaseKAlSi3O8
16.3.7SanidineKAlSi3O8
16.3.8MuscoviteKAl2(AlSi3O10)(OH)2

Other Names for Lithosite

Name in Other Languages:
German:Lithosit
Spanish:Lithosita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Lithosite

Reference List:
American Mineralogist (1984): 69: 210.

Doklady Akademii Nauk SSSR (1986): 291(6): 1370-1373.

Internet Links for Lithosite

Localities for Lithosite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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