Lutecite Mineral Data

Lutecite Mineral Data
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General Lutecite Information

Help on Chemical Formula: Chemical Formula: SiO2
Help on Composition: Composition: Molecular Weight = 60.08 gm
   Silicon  46.74 %  Si  100.00 % SiO2
   Oxygen   53.26 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (SiO2)
Help on Environment: Environment: Precipitated from silica saturated solutions at high pH. Compare with chalcedony. Indistinguishable from the former.
Help on IMA Status: IMA Status: Not Approved IMA
Help on Locality: Locality: Gran Canaria, Canary Islands. Occures world wide. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1892.
Help on Synonym: Synonym: Lutecine
  Moganite
 

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Lutecite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.7961:1:2.1974
Help on Cell Dimensions: Cell Dimensions: a = 8.758, b = 4.876, c = 10.715, Z = 12; beta = 90.09° V = 457.57 Den(Calc)= 2.62
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I12/a1=C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.39(0.5), 1.37(1), 1.38(1),1.83(1), 2.29(1), 3.33(1), 4.45(1),
 

Physical Properties of Lutecite

Help on Cleavage: Cleavage: None
Help on Color: Color: Gray, Chalky white.
Help on Density: Density: 2.52 - 2.58, Average = 2.54
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Help on Habit: Habit: Colloform - Forming from a gel or colloidal mass.
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Lutecite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2013,KPDmeas= 0.2069,KC= 0.208
Ncalc = 1.52 - 1.54
Help on Optical Data: Optical Data: Biaxial (?), a=1.524, g=1.531, bire=0.0070
 

Calculated Properties of Lutecite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.55 gm/cc
note: Specific Gravity of Lutecite =2.55 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PELutecite = 1.80 barns/electron
U=PELutecite x rElectron Density= 4.58 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lutecite is Not Radioactive
 

Lutecite Classification
Help on Dana Class: Dana Class: 75.02.03.01 (75)Tectosilicate Si Tetrahedral Frameworks
  (75.02)SiO2 with H2O and organics
  (75.02.03)Dana Group
 
75.02.03.01 Lutecite* SiO2 I12/a1=C 2/c 2/m
Help on Strunz Class: Strunz Class: 04.DA.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DA -With small cations
 
04.DA.20 Lutecite* SiO2 I12/a1=C 2/c 2/m
 
04.DA.20 Moganite! SiO2 I2/a 2/m
 

Other Lutecite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Lutecite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Print or Cut-and-Paste your Lutecite Specimen Label here :

Lutecite

SiO2
Dana No: 75.02.03.01 Strunz No: 04.DA.20
Locality:

 

Notes: