Mineralogy Database

Beryllonite Mineral Data

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General Beryllonite Information

Help on Chemical  Formula: Chemical Formula: NaBePO4
Help on Composition: Composition: Molecular Weight = 126.97 gm
   Sodium      18.11 %  Na   24.41 % Na2O
   Beryllium    7.10 %  Be   19.70 % BeO
   Phosphorus  24.39 %  P    55.90 % P2O5
   Oxygen      50.40 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaBe(PO4)
Help on Environment: Environment: Occurs as a rare secondary mineral in granitic and alkalic pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1888
Help on Locality: Locality: In the USA, in Maine, found on Sugarloaf Mountain, near Stoneham, at the Dunton quarry and the Bell Pit, Newry, Oxford Co., and other minor occurrences. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For one of the major constituents in the composition, BERYLLium.
Help on Name Pronunciation: Name Pronunciation: Beryllonite + Pronunciation Say BERYLLONITE
Help on Synonym: Synonym: ICSD 9271
  PDF 33-1213

Beryllonite Image

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Comments: Clear twinned crystal of beryllonite.
Location: Telecio mine, Linopolis, Minas Gerais, Brazil. Scale: Crystal size 1 cm.
© John Veevaert

Beryllonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0476:1:1.826
Help on Cell Dimensions: Cell Dimensions: a = 8.13, b = 7.76, c = 14.17, Z = 12; beta = 90° V = 893.97 Den(Calc)= 2.83
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.84(1), 3.65(0.9), 2.28(0.7),

Physical Properties of Beryllonite

Help on Cleavage: Cleavage: {???} Perfect, {???} Good, Perfect
Help on Color: Color: Colorless, White, Light yellow.
Help on Density: Density: 2.8
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white

Optical Properties of Beryllonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.015 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1968,KPDmeas= 0.1989,KC= 0.1959
Ncalc = 1.55
Help on Optical Data: Optical Data: Biaxial (-), a=1.552, b=1.5579, g=1.561, bire=0.0090

Calculated Properties of Beryllonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.76 gm/cc
note: Specific Gravity of Beryllonite =2.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEBeryllonite = 1.52 barns/electron
U=PEBeryllonite x rElectron Density= 4.19 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Beryllonite is Not Radioactive

Beryllonite Classification

Help on  Dana Class: Dana Class: (38)Anhydrous Phosphates, etc
  (38.01)A+ B++ XO4
  (38.01.05)Dana Group Beryllonite NaBePO4 P 21/n 2/m
Help on  Strunz Class: Strunz Class: 08.AA.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AA -With small cations (some also with larger ones)
08.AA.10 Beryllonite NaBePO4 P 21/n 2/m

Other Beryllonite Information

Help on References: References: NAME( AntBidBlaNic4) 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 Beryllonite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - Scandinavian mineral gallery

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Dana No: Strunz No: 08.AA.10





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