Mineralogy Database

Clinobarylite Mineral Data

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General Clinobarylite Information

Help on Chemical  Formula: Chemical Formula: BaBe2Si2O7
Help on Composition: Composition: Molecular Weight = 327.37 gm
   Barium     43.21 %  Ba   48.24 % BaO
   Beryllium   5.42 %  Be   15.05 % BeO
   Silicon    17.16 %  Si   36.71 % SiO2
   Oxygen     34.21 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba1.03Be1.97(Si2O7)
Help on Environment: Environment: Alkaline pegmatite veins at Yukspor Mountain. Dimorphous with barylite; structure determined. Possible polytype barylite-2O.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Non-orthogonal dimorph of barylite.
Help on Synonym: Synonym: IMA2002-015

Clinobarylite Image

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Comments: Radiating group of colorless flattened bladed clinobarylite crystals.
Location: Hackmann Valley, Yukspor Mountain, Khibiny, Kola, Russia. Scale: See Image.
© Rruff Database

Clinobarylite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.3669:1:0.9496
Help on Cell Dimensions: Cell Dimensions: a = 11.65, b = 4.922, c = 4.674, Z = 2; V = 268.01 Den(Calc)= 4.06
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmn2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.458(1)(020), 2.929(0.58)(211), 3.388(0.56)(011),2.335(0.48)(002), 3.249(0.45)(111,111), 2.986(0.28)(301), 3.042(0.26)(310), 2.077(0.23)(320,112), 2.404(0.22)(120),

Physical Properties of Clinobarylite

Help on Cleavage: Cleavage: {100} Perfect, {001} Very Good, {101} Very Good
Help on Color: Color: Colorless.
Help on Density: Density: 3.97
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Clinobarylite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1727,KPDmeas= 0.1767,KC= 0.1742
Ncalc = 1.69 - 1.71
Help on Optical Data: Optical Data: Biaxial (+), a=1.695-1.698, b=1.7-1.702, g=1.705-1.708, bire=0.0100

Calculated Properties of Clinobarylite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.71 gm/cc
note: Specific Gravity of Clinobarylite =4.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.13
Boson Index = 0.87
Help on Photoelectric: Photoelectric: PEClinobarylite = 190.30 barns/electron
U=PEClinobarylite x rElectron Density= 705.96 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clinobarylite is Not Radioactive

Clinobarylite Classification

Help on  Dana Class: Dana Class: (55)Sorosilicate Si2O7 Groups, Generally with No Additional Anions
  (55.01)with cations in [4] and higher coordination
  (55.01.02)Dana Group Clinobarylite! BaBe2Si2O7 Pmn2 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.BB.15 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BB -Si2O7 groups, without non-tetrahedral anions;
09.BB.15 Barylite BaBe2Si2O7 Pn21a mm2
09.BB.15 Clinobarylite! BaBe2Si2O7 Pmn2 2/m 2/m 2/m

Other Clinobarylite Information

Help on References: References: NAME( AmMin, 89:249) PHYS. PROP.(AmMin, 89:249, 90:522) OPTIC PROP.(AmMin, 89:249)
Help on See Also: See Also: Links to other databases for Clinobarylite :
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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Dana No: Strunz No: 09.BB.15





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